./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/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_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:41:25,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:41:25,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:41:25,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:41:25,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:41:25,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:41:25,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:41:25,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:41:25,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:41:25,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:41:25,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:41:25,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:41:25,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:41:25,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:41:25,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:41:25,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:41:25,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:41:25,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:41:25,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:41:25,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:41:25,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:41:25,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:41:25,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:41:25,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:41:25,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:41:25,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:41:25,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:41:25,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:41:25,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:41:25,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:41:25,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:41:25,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:41:25,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:41:25,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:41:25,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:41:25,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:41:25,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:41:25,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:41:25,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:41:25,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:41:25,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:41:25,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:41:25,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:41:25,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:41:25,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:41:25,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:41:25,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:41:25,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:41:25,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:41:25,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:41:25,648 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:41:25,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:41:25,649 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:41:25,649 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:41:25,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:41:25,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:41:25,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:41:25,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:41:25,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:41:25,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:41:25,651 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:41:25,651 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:41:25,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:41:25,651 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:41:25,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:41:25,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:41:25,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:41:25,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:41:25,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:25,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:41:25,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:41:25,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:41:25,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:41:25,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:41:25,656 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:41:25,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:41:25,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:41:25,656 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_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2022-11-16 12:41:25,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:41:25,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:41:25,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:41:25,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:41:25,982 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:41:25,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-16 12:41:26,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/data/fa0796608/19e91acf215c4f45a089656b85f3be22/FLAG694b9db77 [2022-11-16 12:41:26,656 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:41:26,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2022-11-16 12:41:26,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/data/fa0796608/19e91acf215c4f45a089656b85f3be22/FLAG694b9db77 [2022-11-16 12:41:26,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/data/fa0796608/19e91acf215c4f45a089656b85f3be22 [2022-11-16 12:41:26,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:41:26,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:41:26,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:26,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:41:26,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:41:26,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:26" (1/1) ... [2022-11-16 12:41:26,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69de7602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:26, skipping insertion in model container [2022-11-16 12:41:26,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:26" (1/1) ... [2022-11-16 12:41:26,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:41:26,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:41:27,550 WARN L229 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_3c812967-077c-45d7-94a7-865795032420/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-16 12:41:27,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:27,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:41:27,670 WARN L229 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_3c812967-077c-45d7-94a7-865795032420/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i[47038,47051] [2022-11-16 12:41:27,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:41:27,752 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:41:27,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27 WrapperNode [2022-11-16 12:41:27,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:41:27,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:27,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:41:27,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:41:27,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,876 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 312 [2022-11-16 12:41:27,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:41:27,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:41:27,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:41:27,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:41:27,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:41:27,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:41:27,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:41:27,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:41:27,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (1/1) ... [2022-11-16 12:41:27,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:41:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:28,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:41:28,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c812967-077c-45d7-94a7-865795032420/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-16 12:41:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-16 12:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-16 12:41:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-16 12:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:41:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:41:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:41:28,054 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:41:28,296 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:41:28,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:41:29,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:41:29,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:41:29,225 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 12:41:29,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:29 BoogieIcfgContainer [2022-11-16 12:41:29,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:41:29,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:41:29,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:41:29,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:41:29,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:26" (1/3) ... [2022-11-16 12:41:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a475114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:29, skipping insertion in model container [2022-11-16 12:41:29,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:27" (2/3) ... [2022-11-16 12:41:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a475114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:29, skipping insertion in model container [2022-11-16 12:41:29,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:29" (3/3) ... [2022-11-16 12:41:29,240 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2022-11-16 12:41:29,252 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:41:29,262 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:41:29,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-16 12:41:29,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:41:29,432 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:41:29,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 346 transitions, 714 flow [2022-11-16 12:41:29,835 INFO L130 PetriNetUnfolder]: 52/627 cut-off events. [2022-11-16 12:41:29,835 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-11-16 12:41:29,855 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 2825 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. [2022-11-16 12:41:29,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 346 transitions, 714 flow [2022-11-16 12:41:29,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 346 transitions, 714 flow [2022-11-16 12:41:29,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:41:29,909 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;@3da9fff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:41:29,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-16 12:41:29,916 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-11-16 12:41:29,916 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:41:29,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:29,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:29,918 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)] === [2022-11-16 12:41:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1078387621, now seen corresponding path program 1 times [2022-11-16 12:41:29,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:29,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126116335] [2022-11-16 12:41:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:29,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:30,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126116335] [2022-11-16 12:41:30,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126116335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:30,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:30,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589528307] [2022-11-16 12:41:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:30,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:30,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:30,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 346 [2022-11-16 12:41:30,315 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) [2022-11-16 12:41:30,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:30,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 346 [2022-11-16 12:41:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:30,763 INFO L130 PetriNetUnfolder]: 49/1167 cut-off events. [2022-11-16 12:41:30,763 INFO L131 PetriNetUnfolder]: For 96/111 co-relation queries the response was YES. [2022-11-16 12:41:30,770 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 6042 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. [2022-11-16 12:41:30,777 INFO L137 encePairwiseOnDemand]: 327/346 looper letters, 18 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2022-11-16 12:41:30,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 328 transitions, 718 flow [2022-11-16 12:41:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:41:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-11-16 12:41:30,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9258188824662813 [2022-11-16 12:41:30,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-11-16 12:41:30,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-11-16 12:41:30,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:30,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-11-16 12:41:30,806 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) [2022-11-16 12:41:30,815 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) [2022-11-16 12:41:30,816 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) [2022-11-16 12:41:30,818 INFO L175 Difference]: Start difference. First operand has 328 places, 346 transitions, 714 flow. Second operand 3 states and 961 transitions. [2022-11-16 12:41:30,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 328 transitions, 718 flow [2022-11-16 12:41:30,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 328 transitions, 718 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:41:30,831 INFO L231 Difference]: Finished difference. Result has 328 places, 328 transitions, 682 flow [2022-11-16 12:41:30,833 INFO L271 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} [2022-11-16 12:41:30,837 INFO L288 CegarLoopForPetriNet]: 328 programPoint places, 0 predicate places. [2022-11-16 12:41:30,838 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 328 transitions, 682 flow [2022-11-16 12:41:30,838 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) [2022-11-16 12:41:30,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:30,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:41:30,839 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)] === [2022-11-16 12:41:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 913275473, now seen corresponding path program 1 times [2022-11-16 12:41:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181507894] [2022-11-16 12:41:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:30,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:30,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181507894] [2022-11-16 12:41:30,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181507894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:30,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:30,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:41:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547286053] [2022-11-16 12:41:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:30,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 346 [2022-11-16 12:41:30,966 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) [2022-11-16 12:41:30,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:30,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 346 [2022-11-16 12:41:30,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:31,265 INFO L130 PetriNetUnfolder]: 38/1070 cut-off events. [2022-11-16 12:41:31,266 INFO L131 PetriNetUnfolder]: For 81/94 co-relation queries the response was YES. [2022-11-16 12:41:31,274 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 5292 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. [2022-11-16 12:41:31,279 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 13 selfloop transitions, 1 changer transitions 0/325 dead transitions. [2022-11-16 12:41:31,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 325 transitions, 704 flow [2022-11-16 12:41:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:41:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2022-11-16 12:41:31,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9152215799614644 [2022-11-16 12:41:31,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2022-11-16 12:41:31,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2022-11-16 12:41:31,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:31,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2022-11-16 12:41:31,286 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) [2022-11-16 12:41:31,290 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) [2022-11-16 12:41:31,291 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) [2022-11-16 12:41:31,292 INFO L175 Difference]: Start difference. First operand has 328 places, 328 transitions, 682 flow. Second operand 3 states and 950 transitions. [2022-11-16 12:41:31,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 325 transitions, 704 flow [2022-11-16 12:41:31,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 325 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:41:31,301 INFO L231 Difference]: Finished difference. Result has 325 places, 325 transitions, 674 flow [2022-11-16 12:41:31,302 INFO L271 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} [2022-11-16 12:41:31,302 INFO L288 CegarLoopForPetriNet]: 328 programPoint places, -3 predicate places. [2022-11-16 12:41:31,303 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 325 transitions, 674 flow [2022-11-16 12:41:31,304 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) [2022-11-16 12:41:31,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:31,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:31,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:41:31,306 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)] === [2022-11-16 12:41:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -942990609, now seen corresponding path program 1 times [2022-11-16 12:41:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:31,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483814063] [2022-11-16 12:41:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:31,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:31,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:31,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483814063] [2022-11-16 12:41:31,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483814063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:31,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:31,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:31,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653990073] [2022-11-16 12:41:31,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:31,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:31,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:31,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 346 [2022-11-16 12:41:31,914 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) [2022-11-16 12:41:31,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:31,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 346 [2022-11-16 12:41:31,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:45,659 INFO L130 PetriNetUnfolder]: 34434/76061 cut-off events. [2022-11-16 12:41:45,659 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2022-11-16 12:41:45,840 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 1534. Compared 810184 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. [2022-11-16 12:41:46,201 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 102 selfloop transitions, 5 changer transitions 0/324 dead transitions. [2022-11-16 12:41:46,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 324 transitions, 886 flow [2022-11-16 12:41:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1434 transitions. [2022-11-16 12:41:46,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6907514450867052 [2022-11-16 12:41:46,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1434 transitions. [2022-11-16 12:41:46,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1434 transitions. [2022-11-16 12:41:46,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:46,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1434 transitions. [2022-11-16 12:41:46,212 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) [2022-11-16 12:41:46,217 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) [2022-11-16 12:41:46,219 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) [2022-11-16 12:41:46,219 INFO L175 Difference]: Start difference. First operand has 325 places, 325 transitions, 674 flow. Second operand 6 states and 1434 transitions. [2022-11-16 12:41:46,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 324 transitions, 886 flow [2022-11-16 12:41:46,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 324 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:41:46,239 INFO L231 Difference]: Finished difference. Result has 328 places, 324 transitions, 681 flow [2022-11-16 12:41:46,240 INFO L271 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} [2022-11-16 12:41:46,243 INFO L288 CegarLoopForPetriNet]: 328 programPoint places, 0 predicate places. [2022-11-16 12:41:46,244 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 324 transitions, 681 flow [2022-11-16 12:41:46,245 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) [2022-11-16 12:41:46,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:41:46,245 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:46,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:41:46,246 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)] === [2022-11-16 12:41:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1692967592, now seen corresponding path program 1 times [2022-11-16 12:41:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:46,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961657511] [2022-11-16 12:41:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961657511] [2022-11-16 12:41:46,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961657511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:46,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:41:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275985090] [2022-11-16 12:41:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:46,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:41:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:41:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:46,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 346 [2022-11-16 12:41:46,825 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) [2022-11-16 12:41:46,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:41:46,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 346 [2022-11-16 12:41:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:41:59,182 INFO L130 PetriNetUnfolder]: 34434/76060 cut-off events. [2022-11-16 12:41:59,182 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-11-16 12:41:59,345 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 1511. Compared 810589 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. [2022-11-16 12:41:59,959 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 101 selfloop transitions, 5 changer transitions 0/323 dead transitions. [2022-11-16 12:41:59,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 323 transitions, 891 flow [2022-11-16 12:41:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:41:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:41:59,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1433 transitions. [2022-11-16 12:41:59,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6902697495183044 [2022-11-16 12:41:59,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1433 transitions. [2022-11-16 12:41:59,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1433 transitions. [2022-11-16 12:41:59,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:41:59,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1433 transitions. [2022-11-16 12:41:59,974 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) [2022-11-16 12:41:59,978 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) [2022-11-16 12:41:59,981 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) [2022-11-16 12:41:59,982 INFO L175 Difference]: Start difference. First operand has 328 places, 324 transitions, 681 flow. Second operand 6 states and 1433 transitions. [2022-11-16 12:41:59,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 323 transitions, 891 flow [2022-11-16 12:41:59,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 323 transitions, 881 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:00,002 INFO L231 Difference]: Finished difference. Result has 327 places, 323 transitions, 679 flow [2022-11-16 12:42:00,003 INFO L271 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} [2022-11-16 12:42:00,005 INFO L288 CegarLoopForPetriNet]: 328 programPoint places, -1 predicate places. [2022-11-16 12:42:00,005 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 323 transitions, 679 flow [2022-11-16 12:42:00,006 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) [2022-11-16 12:42:00,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:00,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:00,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:42:00,010 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)] === [2022-11-16 12:42:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 738072291, now seen corresponding path program 1 times [2022-11-16 12:42:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:00,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468575996] [2022-11-16 12:42:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:00,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:00,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468575996] [2022-11-16 12:42:00,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468575996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:00,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:00,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698007417] [2022-11-16 12:42:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:00,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 346 [2022-11-16 12:42:00,163 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) [2022-11-16 12:42:00,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:00,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 346 [2022-11-16 12:42:00,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:00,266 INFO L130 PetriNetUnfolder]: 9/434 cut-off events. [2022-11-16 12:42:00,266 INFO L131 PetriNetUnfolder]: For 28/58 co-relation queries the response was YES. [2022-11-16 12:42:00,268 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 1149 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. [2022-11-16 12:42:00,270 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 13 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2022-11-16 12:42:00,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 325 transitions, 713 flow [2022-11-16 12:42:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:42:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 964 transitions. [2022-11-16 12:42:00,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928709055876686 [2022-11-16 12:42:00,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 964 transitions. [2022-11-16 12:42:00,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 964 transitions. [2022-11-16 12:42:00,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:00,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 964 transitions. [2022-11-16 12:42:00,277 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) [2022-11-16 12:42:00,280 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) [2022-11-16 12:42:00,281 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) [2022-11-16 12:42:00,281 INFO L175 Difference]: Start difference. First operand has 327 places, 323 transitions, 679 flow. Second operand 3 states and 964 transitions. [2022-11-16 12:42:00,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 325 transitions, 713 flow [2022-11-16 12:42:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 325 transitions, 703 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:00,289 INFO L231 Difference]: Finished difference. Result has 325 places, 323 transitions, 677 flow [2022-11-16 12:42:00,289 INFO L271 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} [2022-11-16 12:42:00,290 INFO L288 CegarLoopForPetriNet]: 328 programPoint places, -3 predicate places. [2022-11-16 12:42:00,290 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 323 transitions, 677 flow [2022-11-16 12:42:00,291 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) [2022-11-16 12:42:00,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:00,292 INFO L209 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] [2022-11-16 12:42:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:42:00,292 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)] === [2022-11-16 12:42:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -509352471, now seen corresponding path program 1 times [2022-11-16 12:42:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:00,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401651531] [2022-11-16 12:42:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:42:00,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:42:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:42:00,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:42:00,393 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:42:00,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-16 12:42:00,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-16 12:42:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-16 12:42:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-16 12:42:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-16 12:42:00,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-16 12:42:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-16 12:42:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-16 12:42:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-16 12:42:00,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-16 12:42:00,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-16 12:42:00,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-16 12:42:00,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-16 12:42:00,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-16 12:42:00,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-16 12:42:00,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2022-11-16 12:42:00,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-16 12:42:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-16 12:42:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-16 12:42:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-16 12:42:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-16 12:42:00,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-16 12:42:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-16 12:42:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-16 12:42:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-16 12:42:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-16 12:42:00,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-16 12:42:00,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-16 12:42:00,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-16 12:42:00,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-16 12:42:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-16 12:42:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-16 12:42:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-16 12:42:00,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-16 12:42:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-16 12:42:00,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-16 12:42:00,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:42:00,410 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 12:42:00,413 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-16 12:42:00,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-16 12:42:00,552 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-16 12:42:00,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 558 transitions, 1164 flow [2022-11-16 12:42:01,297 INFO L130 PetriNetUnfolder]: 191/1821 cut-off events. [2022-11-16 12:42:01,298 INFO L131 PetriNetUnfolder]: For 72/126 co-relation queries the response was YES. [2022-11-16 12:42:01,365 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 12593 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. [2022-11-16 12:42:01,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 558 transitions, 1164 flow [2022-11-16 12:42:01,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 558 transitions, 1164 flow [2022-11-16 12:42:01,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:01,396 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;@3da9fff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:01,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-16 12:42:01,399 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-11-16 12:42:01,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:42:01,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:01,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:01,400 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)] === [2022-11-16 12:42:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1251208529, now seen corresponding path program 1 times [2022-11-16 12:42:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:01,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509810640] [2022-11-16 12:42:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:01,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:01,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:01,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509810640] [2022-11-16 12:42:01,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509810640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:01,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:01,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409545434] [2022-11-16 12:42:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:01,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:01,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 558 [2022-11-16 12:42:01,440 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) [2022-11-16 12:42:01,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:01,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 558 [2022-11-16 12:42:01,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:09,327 INFO L130 PetriNetUnfolder]: 3136/30596 cut-off events. [2022-11-16 12:42:09,327 INFO L131 PetriNetUnfolder]: For 4823/5455 co-relation queries the response was YES. [2022-11-16 12:42:09,778 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 490. Compared 419310 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. [2022-11-16 12:42:09,945 INFO L137 encePairwiseOnDemand]: 527/558 looper letters, 30 selfloop transitions, 2 changer transitions 0/527 dead transitions. [2022-11-16 12:42:09,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 527 transitions, 1166 flow [2022-11-16 12:42:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:42:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1546 transitions. [2022-11-16 12:42:09,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9235364396654719 [2022-11-16 12:42:09,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1546 transitions. [2022-11-16 12:42:09,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1546 transitions. [2022-11-16 12:42:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1546 transitions. [2022-11-16 12:42:09,965 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) [2022-11-16 12:42:09,969 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) [2022-11-16 12:42:09,970 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) [2022-11-16 12:42:09,970 INFO L175 Difference]: Start difference. First operand has 525 places, 558 transitions, 1164 flow. Second operand 3 states and 1546 transitions. [2022-11-16 12:42:09,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 527 transitions, 1166 flow [2022-11-16 12:42:09,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 527 transitions, 1166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:42:10,000 INFO L231 Difference]: Finished difference. Result has 524 places, 527 transitions, 1106 flow [2022-11-16 12:42:10,004 INFO L271 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} [2022-11-16 12:42:10,006 INFO L288 CegarLoopForPetriNet]: 525 programPoint places, -1 predicate places. [2022-11-16 12:42:10,006 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 527 transitions, 1106 flow [2022-11-16 12:42:10,007 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) [2022-11-16 12:42:10,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:10,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:10,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:42:10,008 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)] === [2022-11-16 12:42:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash -611518211, now seen corresponding path program 1 times [2022-11-16 12:42:10,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:10,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624488925] [2022-11-16 12:42:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:10,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624488925] [2022-11-16 12:42:10,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624488925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:10,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:10,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:10,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144767478] [2022-11-16 12:42:10,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:10,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 498 out of 558 [2022-11-16 12:42:10,070 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) [2022-11-16 12:42:10,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:10,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 498 of 558 [2022-11-16 12:42:10,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:15,361 INFO L130 PetriNetUnfolder]: 1430/20155 cut-off events. [2022-11-16 12:42:15,361 INFO L131 PetriNetUnfolder]: For 2516/2862 co-relation queries the response was YES. [2022-11-16 12:42:15,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22640 conditions, 20155 events. 1430/20155 cut-off events. For 2516/2862 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 255664 event pairs, 853 based on Foata normal form. 0/18236 useless extension candidates. Maximal degree in co-relation 22588. Up to 1658 conditions per place. [2022-11-16 12:42:15,703 INFO L137 encePairwiseOnDemand]: 552/558 looper letters, 23 selfloop transitions, 1 changer transitions 0/522 dead transitions. [2022-11-16 12:42:15,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 522 transitions, 1144 flow [2022-11-16 12:42:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:42:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1523 transitions. [2022-11-16 12:42:15,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9097968936678614 [2022-11-16 12:42:15,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1523 transitions. [2022-11-16 12:42:15,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1523 transitions. [2022-11-16 12:42:15,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:15,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1523 transitions. [2022-11-16 12:42:15,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 507.6666666666667) internal successors, (1523), 3 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:15,716 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) [2022-11-16 12:42:15,717 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) [2022-11-16 12:42:15,718 INFO L175 Difference]: Start difference. First operand has 524 places, 527 transitions, 1106 flow. Second operand 3 states and 1523 transitions. [2022-11-16 12:42:15,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 522 transitions, 1144 flow [2022-11-16 12:42:15,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 522 transitions, 1140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:42:15,732 INFO L231 Difference]: Finished difference. Result has 519 places, 522 transitions, 1094 flow [2022-11-16 12:42:15,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1094, PETRI_PLACES=519, PETRI_TRANSITIONS=522} [2022-11-16 12:42:15,733 INFO L288 CegarLoopForPetriNet]: 525 programPoint places, -6 predicate places. [2022-11-16 12:42:15,734 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 522 transitions, 1094 flow [2022-11-16 12:42:15,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-16 12:42:15,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:15,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:15,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:42:15,735 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 46 more)] === [2022-11-16 12:42:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1549676689, now seen corresponding path program 1 times [2022-11-16 12:42:15,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:15,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332525254] [2022-11-16 12:42:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:42:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:16,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332525254] [2022-11-16 12:42:16,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332525254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:16,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:16,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:42:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444036556] [2022-11-16 12:42:16,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:16,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:42:16,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 558 [2022-11-16 12:42:16,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 522 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 343.5) internal successors, (2061), 6 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:16,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:16,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 558 [2022-11-16 12:42:16,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand