./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R --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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- 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-38b53e6 [2022-11-25 15:36:05,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:36:05,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:36:05,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:36:05,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:36:05,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:36:05,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:36:05,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:36:05,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:36:05,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:36:05,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:36:05,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:36:05,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:36:05,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:36:05,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:36:05,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:36:05,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:36:05,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:36:05,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:36:05,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:36:05,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:36:05,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:36:05,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:36:05,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:36:05,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:36:05,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:36:05,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:36:05,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:36:05,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:36:05,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:36:05,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:36:05,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:36:05,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:36:05,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:36:05,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:36:05,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:36:05,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:36:05,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:36:05,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:36:05,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:36:05,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:36:05,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 15:36:05,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:36:05,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:36:05,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:36:05,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:36:05,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:36:05,554 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:36:05,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:36:05,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:36:05,555 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:36:05,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:36:05,556 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:36:05,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:36:05,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:36:05,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:36:05,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:36:05,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:36:05,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:36:05,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:36:05,558 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 15:36:05,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:36:05,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:36:05,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:36:05,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:36:05,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:36:05,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:36:05,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:36:05,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:36:05,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:36:05,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:36:05,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:36:05,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:36:05,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:36:05,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:36:05,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:36:05,563 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:36:05,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:36:05,563 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2022-11-25 15:36:05,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:36:05,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:36:05,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:36:05,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:36:05,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:36:05,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-25 15:36:09,042 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:36:09,357 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:36:09,358 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2022-11-25 15:36:09,406 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/data/294980c4f/e502caac0f8e451790eeb367c9ea3662/FLAG89cbf7c8c [2022-11-25 15:36:09,433 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/data/294980c4f/e502caac0f8e451790eeb367c9ea3662 [2022-11-25 15:36:09,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:36:09,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:36:09,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:36:09,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:36:09,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:36:09,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:36:09" (1/1) ... [2022-11-25 15:36:09,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddd56fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:09, skipping insertion in model container [2022-11-25 15:36:09,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:36:09" (1/1) ... [2022-11-25 15:36:09,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:36:09,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:36:10,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:36:10,055 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:36:10,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:36:10,160 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:36:10,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10 WrapperNode [2022-11-25 15:36:10,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:36:10,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:36:10,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:36:10,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:36:10,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,261 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-11-25 15:36:10,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:36:10,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:36:10,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:36:10,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:36:10,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,317 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:36:10,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:36:10,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:36:10,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:36:10,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (1/1) ... [2022-11-25 15:36:10,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:36:10,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:10,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:10,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:36:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:36:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:36:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:36:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:36:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:36:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:36:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 15:36:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 15:36:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:36:10,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:36:10,420 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:36:10,621 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:36:10,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:36:10,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:36:10,913 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:36:10,913 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:36:10,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:36:10 BoogieIcfgContainer [2022-11-25 15:36:10,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:36:10,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:36:10,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:36:10,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:36:10,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:36:09" (1/3) ... [2022-11-25 15:36:10,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3342f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:36:10, skipping insertion in model container [2022-11-25 15:36:10,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:10" (2/3) ... [2022-11-25 15:36:10,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3342f04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:36:10, skipping insertion in model container [2022-11-25 15:36:10,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:36:10" (3/3) ... [2022-11-25 15:36:10,925 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2022-11-25 15:36:10,935 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:36:10,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:36:10,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:36:10,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:36:11,090 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:36:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 211 flow [2022-11-25 15:36:11,185 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-25 15:36:11,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:36:11,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-25 15:36:11,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 211 flow [2022-11-25 15:36:11,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 102 transitions, 207 flow [2022-11-25 15:36:11,200 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:36:11,216 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 207 flow [2022-11-25 15:36:11,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 102 transitions, 207 flow [2022-11-25 15:36:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 207 flow [2022-11-25 15:36:11,249 INFO L130 PetriNetUnfolder]: 4/102 cut-off events. [2022-11-25 15:36:11,250 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:36:11,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 102 events. 4/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-25 15:36:11,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 2220 [2022-11-25 15:36:14,323 INFO L134 LiptonReduction]: Checked pairs total: 10908 [2022-11-25 15:36:14,323 INFO L136 LiptonReduction]: Total number of compositions: 82 [2022-11-25 15:36:14,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:36:14,354 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;@72ca5c58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:36:14,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 15:36:14,360 INFO L130 PetriNetUnfolder]: 1/9 cut-off events. [2022-11-25 15:36:14,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:36:14,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:14,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:36:14,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 351199677, now seen corresponding path program 1 times [2022-11-25 15:36:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:14,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880000558] [2022-11-25 15:36:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:14,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880000558] [2022-11-25 15:36:14,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880000558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:14,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:14,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:36:14,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732223712] [2022-11-25 15:36:14,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:14,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:36:14,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:36:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:36:14,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 185 [2022-11-25 15:36:14,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:14,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:14,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 185 [2022-11-25 15:36:14,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:14,879 INFO L130 PetriNetUnfolder]: 37/165 cut-off events. [2022-11-25 15:36:14,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:36:14,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2022-11-25 15:36:14,883 INFO L137 encePairwiseOnDemand]: 181/185 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-11-25 15:36:14,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2022-11-25 15:36:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:36:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:36:14,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2022-11-25 15:36:14,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5477477477477477 [2022-11-25 15:36:14,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2022-11-25 15:36:14,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2022-11-25 15:36:14,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:14,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2022-11-25 15:36:14,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:14,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:14,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:14,942 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 77 flow. Second operand 3 states and 304 transitions. [2022-11-25 15:36:14,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2022-11-25 15:36:14,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:36:14,949 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2022-11-25 15:36:14,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-11-25 15:36:14,958 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-11-25 15:36:14,958 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2022-11-25 15:36:14,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:14,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:14,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:14,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:36:14,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1003474694, now seen corresponding path program 1 times [2022-11-25 15:36:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827354516] [2022-11-25 15:36:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:14,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827354516] [2022-11-25 15:36:15,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827354516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065881293] [2022-11-25 15:36:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:15,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:15,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:36:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:15,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:36:15,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:15,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065881293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:15,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:15,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:36:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575637382] [2022-11-25 15:36:15,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:15,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:36:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:15,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:36:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:36:15,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2022-11-25 15:36:15,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:15,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:15,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2022-11-25 15:36:15,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:15,517 INFO L130 PetriNetUnfolder]: 37/168 cut-off events. [2022-11-25 15:36:15,517 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:36:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2022-11-25 15:36:15,521 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-25 15:36:15,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2022-11-25 15:36:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:36:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2022-11-25 15:36:15,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5288288288288289 [2022-11-25 15:36:15,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2022-11-25 15:36:15,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2022-11-25 15:36:15,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:15,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2022-11-25 15:36:15,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:15,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:15,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:15,535 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 587 transitions. [2022-11-25 15:36:15,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2022-11-25 15:36:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:36:15,537 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2022-11-25 15:36:15,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-11-25 15:36:15,538 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2022-11-25 15:36:15,538 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2022-11-25 15:36:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.57142857142857) internal successors, (669), 7 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:15,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:15,539 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:15,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 15:36:15,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:15,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:15,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:15,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1344525785, now seen corresponding path program 2 times [2022-11-25 15:36:15,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:15,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780367780] [2022-11-25 15:36:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:15,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:36:16,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780367780] [2022-11-25 15:36:16,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780367780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:16,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:16,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:36:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038887572] [2022-11-25 15:36:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:36:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:36:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:36:16,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 185 [2022-11-25 15:36:16,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:16,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:16,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 185 [2022-11-25 15:36:16,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:16,808 INFO L130 PetriNetUnfolder]: 223/546 cut-off events. [2022-11-25 15:36:16,808 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:36:16,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 546 events. 223/546 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2683 event pairs, 94 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 1038. Up to 276 conditions per place. [2022-11-25 15:36:16,819 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 72 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2022-11-25 15:36:16,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 101 transitions, 428 flow [2022-11-25 15:36:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:36:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 577 transitions. [2022-11-25 15:36:16,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5198198198198198 [2022-11-25 15:36:16,823 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 577 transitions. [2022-11-25 15:36:16,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 577 transitions. [2022-11-25 15:36:16,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 577 transitions. [2022-11-25 15:36:16,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:16,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:16,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:16,828 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 577 transitions. [2022-11-25 15:36:16,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 101 transitions, 428 flow [2022-11-25 15:36:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 101 transitions, 414 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 15:36:16,833 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 250 flow [2022-11-25 15:36:16,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-11-25 15:36:16,835 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2022-11-25 15:36:16,835 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 250 flow [2022-11-25 15:36:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:16,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:16,836 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:36:16,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash -319056528, now seen corresponding path program 1 times [2022-11-25 15:36:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:16,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727064181] [2022-11-25 15:36:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:36:17,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:17,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727064181] [2022-11-25 15:36:17,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727064181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:17,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:17,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:36:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471518740] [2022-11-25 15:36:17,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:17,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:36:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:36:17,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:36:17,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 185 [2022-11-25 15:36:17,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:17,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 185 [2022-11-25 15:36:17,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:17,675 INFO L130 PetriNetUnfolder]: 265/694 cut-off events. [2022-11-25 15:36:17,675 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2022-11-25 15:36:17,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 694 events. 265/694 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4072 event pairs, 105 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 1564. Up to 383 conditions per place. [2022-11-25 15:36:17,684 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 78 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2022-11-25 15:36:17,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 119 transitions, 592 flow [2022-11-25 15:36:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:36:17,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2022-11-25 15:36:17,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5207207207207207 [2022-11-25 15:36:17,687 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2022-11-25 15:36:17,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2022-11-25 15:36:17,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:17,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2022-11-25 15:36:17,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,693 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,694 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 250 flow. Second operand 6 states and 578 transitions. [2022-11-25 15:36:17,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 119 transitions, 592 flow [2022-11-25 15:36:17,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 119 transitions, 592 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:36:17,705 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 428 flow [2022-11-25 15:36:17,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2022-11-25 15:36:17,707 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2022-11-25 15:36:17,708 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 428 flow [2022-11-25 15:36:17,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:17,708 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:17,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:36:17,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:17,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:17,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1242229187, now seen corresponding path program 1 times [2022-11-25 15:36:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:17,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797477755] [2022-11-25 15:36:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:17,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797477755] [2022-11-25 15:36:17,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797477755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:17,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483973354] [2022-11-25 15:36:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:17,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:17,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:17,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:17,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:36:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:36:17,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:17,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:18,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483973354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:18,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:18,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 15:36:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329189324] [2022-11-25 15:36:18,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:18,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:36:18,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:36:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:36:18,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185 [2022-11-25 15:36:18,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:18,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185 [2022-11-25 15:36:18,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:18,256 INFO L130 PetriNetUnfolder]: 136/505 cut-off events. [2022-11-25 15:36:18,256 INFO L131 PetriNetUnfolder]: For 186/193 co-relation queries the response was YES. [2022-11-25 15:36:18,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 505 events. 136/505 cut-off events. For 186/193 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3248 event pairs, 68 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 1205. Up to 229 conditions per place. [2022-11-25 15:36:18,261 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 27 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-11-25 15:36:18,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 540 flow [2022-11-25 15:36:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:36:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:36:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1160 transitions. [2022-11-25 15:36:18,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2022-11-25 15:36:18,266 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1160 transitions. [2022-11-25 15:36:18,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1160 transitions. [2022-11-25 15:36:18,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:18,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1160 transitions. [2022-11-25 15:36:18,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.66666666666667) internal successors, (1160), 12 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,274 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,274 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 428 flow. Second operand 12 states and 1160 transitions. [2022-11-25 15:36:18,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 540 flow [2022-11-25 15:36:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 540 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:36:18,280 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 512 flow [2022-11-25 15:36:18,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2022-11-25 15:36:18,281 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2022-11-25 15:36:18,281 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 512 flow [2022-11-25 15:36:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.46153846153847) internal successors, (1241), 13 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:18,282 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:18,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:18,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:18,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1349268835, now seen corresponding path program 2 times [2022-11-25 15:36:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:18,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389797113] [2022-11-25 15:36:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:18,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389797113] [2022-11-25 15:36:18,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389797113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:18,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:18,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:36:18,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111377838] [2022-11-25 15:36:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:36:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:36:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:36:19,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:36:19,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:19,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:19,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:36:19,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:19,560 INFO L130 PetriNetUnfolder]: 490/1118 cut-off events. [2022-11-25 15:36:19,560 INFO L131 PetriNetUnfolder]: For 755/774 co-relation queries the response was YES. [2022-11-25 15:36:19,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 1118 events. 490/1118 cut-off events. For 755/774 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6258 event pairs, 192 based on Foata normal form. 1/1065 useless extension candidates. Maximal degree in co-relation 3220. Up to 780 conditions per place. [2022-11-25 15:36:19,569 INFO L137 encePairwiseOnDemand]: 171/185 looper letters, 121 selfloop transitions, 52 changer transitions 2/178 dead transitions. [2022-11-25 15:36:19,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 178 transitions, 1239 flow [2022-11-25 15:36:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:36:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 553 transitions. [2022-11-25 15:36:19,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4981981981981982 [2022-11-25 15:36:19,573 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 553 transitions. [2022-11-25 15:36:19,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 553 transitions. [2022-11-25 15:36:19,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:19,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 553 transitions. [2022-11-25 15:36:19,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:19,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:19,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:19,577 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 512 flow. Second operand 6 states and 553 transitions. [2022-11-25 15:36:19,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 178 transitions, 1239 flow [2022-11-25 15:36:19,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 178 transitions, 1191 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 15:36:19,586 INFO L231 Difference]: Finished difference. Result has 86 places, 135 transitions, 921 flow [2022-11-25 15:36:19,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=86, PETRI_TRANSITIONS=135} [2022-11-25 15:36:19,587 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2022-11-25 15:36:19,587 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 135 transitions, 921 flow [2022-11-25 15:36:19,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:19,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:19,588 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:36:19,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1680051093, now seen corresponding path program 1 times [2022-11-25 15:36:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473954684] [2022-11-25 15:36:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473954684] [2022-11-25 15:36:19,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473954684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:19,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:19,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:36:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702654089] [2022-11-25 15:36:19,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:19,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:36:19,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:36:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:36:20,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 185 [2022-11-25 15:36:20,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 135 transitions, 921 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:20,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 185 [2022-11-25 15:36:20,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:20,564 INFO L130 PetriNetUnfolder]: 612/1405 cut-off events. [2022-11-25 15:36:20,564 INFO L131 PetriNetUnfolder]: For 1967/1981 co-relation queries the response was YES. [2022-11-25 15:36:20,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4852 conditions, 1405 events. 612/1405 cut-off events. For 1967/1981 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8550 event pairs, 166 based on Foata normal form. 4/1350 useless extension candidates. Maximal degree in co-relation 4787. Up to 859 conditions per place. [2022-11-25 15:36:20,577 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 141 selfloop transitions, 75 changer transitions 21/245 dead transitions. [2022-11-25 15:36:20,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 245 transitions, 1971 flow [2022-11-25 15:36:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:36:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 558 transitions. [2022-11-25 15:36:20,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2022-11-25 15:36:20,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 558 transitions. [2022-11-25 15:36:20,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 558 transitions. [2022-11-25 15:36:20,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:20,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 558 transitions. [2022-11-25 15:36:20,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,587 INFO L175 Difference]: Start difference. First operand has 86 places, 135 transitions, 921 flow. Second operand 6 states and 558 transitions. [2022-11-25 15:36:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 245 transitions, 1971 flow [2022-11-25 15:36:20,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 245 transitions, 1919 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-11-25 15:36:20,616 INFO L231 Difference]: Finished difference. Result has 95 places, 184 transitions, 1467 flow [2022-11-25 15:36:20,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1467, PETRI_PLACES=95, PETRI_TRANSITIONS=184} [2022-11-25 15:36:20,618 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2022-11-25 15:36:20,618 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 184 transitions, 1467 flow [2022-11-25 15:36:20,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:20,619 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:36:20,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash 79275462, now seen corresponding path program 1 times [2022-11-25 15:36:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:20,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415623623] [2022-11-25 15:36:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:21,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415623623] [2022-11-25 15:36:21,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415623623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:21,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:21,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377022097] [2022-11-25 15:36:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:21,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:21,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:36:21,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 184 transitions, 1467 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:21,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:21,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:36:21,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:22,995 INFO L130 PetriNetUnfolder]: 1032/2524 cut-off events. [2022-11-25 15:36:22,996 INFO L131 PetriNetUnfolder]: For 6033/6092 co-relation queries the response was YES. [2022-11-25 15:36:23,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 2524 events. 1032/2524 cut-off events. For 6033/6092 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 19175 event pairs, 157 based on Foata normal form. 36/2555 useless extension candidates. Maximal degree in co-relation 10297. Up to 794 conditions per place. [2022-11-25 15:36:23,023 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 280 selfloop transitions, 78 changer transitions 102/488 dead transitions. [2022-11-25 15:36:23,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 488 transitions, 4665 flow [2022-11-25 15:36:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:36:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 15:36:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1269 transitions. [2022-11-25 15:36:23,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4572972972972973 [2022-11-25 15:36:23,028 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1269 transitions. [2022-11-25 15:36:23,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1269 transitions. [2022-11-25 15:36:23,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:23,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1269 transitions. [2022-11-25 15:36:23,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 84.6) internal successors, (1269), 15 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:23,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:23,038 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:23,039 INFO L175 Difference]: Start difference. First operand has 95 places, 184 transitions, 1467 flow. Second operand 15 states and 1269 transitions. [2022-11-25 15:36:23,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 488 transitions, 4665 flow [2022-11-25 15:36:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 488 transitions, 4611 flow, removed 27 selfloop flow, removed 0 redundant places. [2022-11-25 15:36:23,095 INFO L231 Difference]: Finished difference. Result has 122 places, 247 transitions, 2406 flow [2022-11-25 15:36:23,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2406, PETRI_PLACES=122, PETRI_TRANSITIONS=247} [2022-11-25 15:36:23,096 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2022-11-25 15:36:23,096 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 247 transitions, 2406 flow [2022-11-25 15:36:23,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:23,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:23,097 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:23,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:36:23,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2116782910, now seen corresponding path program 2 times [2022-11-25 15:36:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:23,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844783847] [2022-11-25 15:36:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844783847] [2022-11-25 15:36:23,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844783847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:23,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:23,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996097036] [2022-11-25 15:36:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:24,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 185 [2022-11-25 15:36:24,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 247 transitions, 2406 flow. Second operand has 9 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:24,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:24,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 185 [2022-11-25 15:36:24,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:25,488 INFO L130 PetriNetUnfolder]: 1094/2639 cut-off events. [2022-11-25 15:36:25,489 INFO L131 PetriNetUnfolder]: For 9280/9351 co-relation queries the response was YES. [2022-11-25 15:36:25,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2639 events. 1094/2639 cut-off events. For 9280/9351 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 20013 event pairs, 186 based on Foata normal form. 44/2680 useless extension candidates. Maximal degree in co-relation 12180. Up to 1162 conditions per place. [2022-11-25 15:36:25,525 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 182 selfloop transitions, 149 changer transitions 53/404 dead transitions. [2022-11-25 15:36:25,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 404 transitions, 4468 flow [2022-11-25 15:36:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:36:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 15:36:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 861 transitions. [2022-11-25 15:36:25,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654054054054054 [2022-11-25 15:36:25,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 861 transitions. [2022-11-25 15:36:25,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 861 transitions. [2022-11-25 15:36:25,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:25,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 861 transitions. [2022-11-25 15:36:25,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.1) internal successors, (861), 10 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:25,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:25,537 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:25,537 INFO L175 Difference]: Start difference. First operand has 122 places, 247 transitions, 2406 flow. Second operand 10 states and 861 transitions. [2022-11-25 15:36:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 404 transitions, 4468 flow [2022-11-25 15:36:25,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 404 transitions, 4414 flow, removed 27 selfloop flow, removed 4 redundant places. [2022-11-25 15:36:25,606 INFO L231 Difference]: Finished difference. Result has 130 places, 284 transitions, 3343 flow [2022-11-25 15:36:25,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3343, PETRI_PLACES=130, PETRI_TRANSITIONS=284} [2022-11-25 15:36:25,608 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2022-11-25 15:36:25,608 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 284 transitions, 3343 flow [2022-11-25 15:36:25,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 75.77777777777777) internal successors, (682), 9 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:25,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:25,609 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:36:25,610 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1758685939, now seen corresponding path program 1 times [2022-11-25 15:36:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:25,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218108569] [2022-11-25 15:36:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:26,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218108569] [2022-11-25 15:36:26,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218108569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:26,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:26,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229997885] [2022-11-25 15:36:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:26,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:36:26,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 284 transitions, 3343 flow. Second operand has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:26,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:26,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:36:26,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:28,216 INFO L130 PetriNetUnfolder]: 1113/2702 cut-off events. [2022-11-25 15:36:28,216 INFO L131 PetriNetUnfolder]: For 12652/12716 co-relation queries the response was YES. [2022-11-25 15:36:28,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13582 conditions, 2702 events. 1113/2702 cut-off events. For 12652/12716 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20560 event pairs, 166 based on Foata normal form. 50/2744 useless extension candidates. Maximal degree in co-relation 13496. Up to 935 conditions per place. [2022-11-25 15:36:28,260 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 344 selfloop transitions, 92 changer transitions 98/574 dead transitions. [2022-11-25 15:36:28,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 574 transitions, 6721 flow [2022-11-25 15:36:28,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:36:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 15:36:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1279 transitions. [2022-11-25 15:36:28,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4609009009009009 [2022-11-25 15:36:28,265 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1279 transitions. [2022-11-25 15:36:28,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1279 transitions. [2022-11-25 15:36:28,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:28,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1279 transitions. [2022-11-25 15:36:28,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 85.26666666666667) internal successors, (1279), 15 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,276 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,276 INFO L175 Difference]: Start difference. First operand has 130 places, 284 transitions, 3343 flow. Second operand 15 states and 1279 transitions. [2022-11-25 15:36:28,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 574 transitions, 6721 flow [2022-11-25 15:36:28,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 574 transitions, 6676 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-11-25 15:36:28,362 INFO L231 Difference]: Finished difference. Result has 155 places, 345 transitions, 4371 flow [2022-11-25 15:36:28,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4371, PETRI_PLACES=155, PETRI_TRANSITIONS=345} [2022-11-25 15:36:28,365 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2022-11-25 15:36:28,365 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 345 transitions, 4371 flow [2022-11-25 15:36:28,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:28,366 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:28,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:36:28,367 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash 397051966, now seen corresponding path program 3 times [2022-11-25 15:36:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:28,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157213177] [2022-11-25 15:36:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:28,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:47,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157213177] [2022-11-25 15:36:47,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157213177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:47,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814461277] [2022-11-25 15:36:47,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:36:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:47,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:47,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:36:47,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 15:36:47,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:47,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 15:36:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:47,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 15:36:47,464 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-25 15:36:47,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-25 15:36:47,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:36:47,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-25 15:36:47,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:36:47,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-25 15:36:47,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:36:47,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-25 15:36:47,642 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:36:47,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-25 15:36:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:47,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:36:47,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814461277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:47,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:36:47,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 21 [2022-11-25 15:36:47,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352703401] [2022-11-25 15:36:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:47,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:47,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:36:48,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:36:48,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 345 transitions, 4371 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:48,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:48,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:36:48,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:49,500 INFO L130 PetriNetUnfolder]: 1059/2643 cut-off events. [2022-11-25 15:36:49,500 INFO L131 PetriNetUnfolder]: For 17105/17206 co-relation queries the response was YES. [2022-11-25 15:36:49,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14540 conditions, 2643 events. 1059/2643 cut-off events. For 17105/17206 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20368 event pairs, 184 based on Foata normal form. 56/2690 useless extension candidates. Maximal degree in co-relation 14442. Up to 783 conditions per place. [2022-11-25 15:36:49,535 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 313 selfloop transitions, 106 changer transitions 55/526 dead transitions. [2022-11-25 15:36:49,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 526 transitions, 6811 flow [2022-11-25 15:36:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:36:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 15:36:49,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2022-11-25 15:36:49,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47081081081081083 [2022-11-25 15:36:49,539 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2022-11-25 15:36:49,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2022-11-25 15:36:49,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:49,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2022-11-25 15:36:49,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:49,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:49,547 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:49,547 INFO L175 Difference]: Start difference. First operand has 155 places, 345 transitions, 4371 flow. Second operand 10 states and 871 transitions. [2022-11-25 15:36:49,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 526 transitions, 6811 flow [2022-11-25 15:36:49,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 526 transitions, 6755 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-25 15:36:49,668 INFO L231 Difference]: Finished difference. Result has 160 places, 362 transitions, 4978 flow [2022-11-25 15:36:49,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4978, PETRI_PLACES=160, PETRI_TRANSITIONS=362} [2022-11-25 15:36:49,669 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 121 predicate places. [2022-11-25 15:36:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 362 transitions, 4978 flow [2022-11-25 15:36:49,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:49,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:49,671 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:49,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:36:49,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1882956809, now seen corresponding path program 2 times [2022-11-25 15:36:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:49,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033948283] [2022-11-25 15:36:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:50,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033948283] [2022-11-25 15:36:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033948283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:50,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:50,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640687901] [2022-11-25 15:36:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:50,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:36:50,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 362 transitions, 4978 flow. Second operand has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:50,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:50,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:36:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:52,499 INFO L130 PetriNetUnfolder]: 1180/2912 cut-off events. [2022-11-25 15:36:52,499 INFO L131 PetriNetUnfolder]: For 21851/21952 co-relation queries the response was YES. [2022-11-25 15:36:52,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16666 conditions, 2912 events. 1180/2912 cut-off events. For 21851/21952 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22724 event pairs, 180 based on Foata normal form. 56/2953 useless extension candidates. Maximal degree in co-relation 16566. Up to 1371 conditions per place. [2022-11-25 15:36:52,541 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 297 selfloop transitions, 161 changer transitions 53/564 dead transitions. [2022-11-25 15:36:52,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 564 transitions, 8104 flow [2022-11-25 15:36:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:36:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 15:36:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1109 transitions. [2022-11-25 15:36:52,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46112266112266115 [2022-11-25 15:36:52,547 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1109 transitions. [2022-11-25 15:36:52,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1109 transitions. [2022-11-25 15:36:52,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:52,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1109 transitions. [2022-11-25 15:36:52,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.3076923076923) internal successors, (1109), 13 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:52,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:52,558 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:52,558 INFO L175 Difference]: Start difference. First operand has 160 places, 362 transitions, 4978 flow. Second operand 13 states and 1109 transitions. [2022-11-25 15:36:52,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 564 transitions, 8104 flow [2022-11-25 15:36:52,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 564 transitions, 7899 flow, removed 44 selfloop flow, removed 3 redundant places. [2022-11-25 15:36:52,720 INFO L231 Difference]: Finished difference. Result has 179 places, 419 transitions, 6181 flow [2022-11-25 15:36:52,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6181, PETRI_PLACES=179, PETRI_TRANSITIONS=419} [2022-11-25 15:36:52,721 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 140 predicate places. [2022-11-25 15:36:52,721 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 419 transitions, 6181 flow [2022-11-25 15:36:52,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:52,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:52,722 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:36:52,723 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1004839048, now seen corresponding path program 1 times [2022-11-25 15:36:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:52,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653050839] [2022-11-25 15:36:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:53,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653050839] [2022-11-25 15:36:53,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653050839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:53,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:53,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324888998] [2022-11-25 15:36:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:53,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:53,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:36:53,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 419 transitions, 6181 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:53,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:53,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:36:53,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:55,312 INFO L130 PetriNetUnfolder]: 1572/3606 cut-off events. [2022-11-25 15:36:55,312 INFO L131 PetriNetUnfolder]: For 30855/30901 co-relation queries the response was YES. [2022-11-25 15:36:55,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21853 conditions, 3606 events. 1572/3606 cut-off events. For 30855/30901 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27198 event pairs, 401 based on Foata normal form. 36/3642 useless extension candidates. Maximal degree in co-relation 21744. Up to 2114 conditions per place. [2022-11-25 15:36:55,366 INFO L137 encePairwiseOnDemand]: 173/185 looper letters, 366 selfloop transitions, 194 changer transitions 69/632 dead transitions. [2022-11-25 15:36:55,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 632 transitions, 9810 flow [2022-11-25 15:36:55,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:36:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:36:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 985 transitions. [2022-11-25 15:36:55,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2022-11-25 15:36:55,370 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 985 transitions. [2022-11-25 15:36:55,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 985 transitions. [2022-11-25 15:36:55,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:55,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 985 transitions. [2022-11-25 15:36:55,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.08333333333333) internal successors, (985), 12 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:55,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:55,377 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:55,377 INFO L175 Difference]: Start difference. First operand has 179 places, 419 transitions, 6181 flow. Second operand 12 states and 985 transitions. [2022-11-25 15:36:55,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 632 transitions, 9810 flow [2022-11-25 15:36:55,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 632 transitions, 9687 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-25 15:36:55,588 INFO L231 Difference]: Finished difference. Result has 190 places, 454 transitions, 7135 flow [2022-11-25 15:36:55,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6098, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7135, PETRI_PLACES=190, PETRI_TRANSITIONS=454} [2022-11-25 15:36:55,590 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 151 predicate places. [2022-11-25 15:36:55,590 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 454 transitions, 7135 flow [2022-11-25 15:36:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:55,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:55,591 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:55,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:36:55,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1720595518, now seen corresponding path program 2 times [2022-11-25 15:36:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:55,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235731602] [2022-11-25 15:36:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:56,045 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:56,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235731602] [2022-11-25 15:36:56,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235731602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:56,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:56,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206186182] [2022-11-25 15:36:56,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:56,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:36:56,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 454 transitions, 7135 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:56,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:56,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:36:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:36:58,192 INFO L130 PetriNetUnfolder]: 1477/3435 cut-off events. [2022-11-25 15:36:58,192 INFO L131 PetriNetUnfolder]: For 34684/34738 co-relation queries the response was YES. [2022-11-25 15:36:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22449 conditions, 3435 events. 1477/3435 cut-off events. For 34684/34738 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 25919 event pairs, 357 based on Foata normal form. 69/3504 useless extension candidates. Maximal degree in co-relation 22335. Up to 1338 conditions per place. [2022-11-25 15:36:58,242 INFO L137 encePairwiseOnDemand]: 175/185 looper letters, 472 selfloop transitions, 108 changer transitions 104/687 dead transitions. [2022-11-25 15:36:58,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 687 transitions, 11087 flow [2022-11-25 15:36:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:36:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 15:36:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1064 transitions. [2022-11-25 15:36:58,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44241164241164244 [2022-11-25 15:36:58,248 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1064 transitions. [2022-11-25 15:36:58,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1064 transitions. [2022-11-25 15:36:58,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:36:58,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1064 transitions. [2022-11-25 15:36:58,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.84615384615384) internal successors, (1064), 13 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:58,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:58,257 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 185.0) internal successors, (2590), 14 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:58,257 INFO L175 Difference]: Start difference. First operand has 190 places, 454 transitions, 7135 flow. Second operand 13 states and 1064 transitions. [2022-11-25 15:36:58,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 687 transitions, 11087 flow [2022-11-25 15:36:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 687 transitions, 11007 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-25 15:36:58,555 INFO L231 Difference]: Finished difference. Result has 203 places, 459 transitions, 7375 flow [2022-11-25 15:36:58,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7095, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7375, PETRI_PLACES=203, PETRI_TRANSITIONS=459} [2022-11-25 15:36:58,556 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 164 predicate places. [2022-11-25 15:36:58,557 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 459 transitions, 7375 flow [2022-11-25 15:36:58,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:58,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:36:58,557 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:36:58,558 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:36:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash 29679784, now seen corresponding path program 1 times [2022-11-25 15:36:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515332636] [2022-11-25 15:36:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:36:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:59,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515332636] [2022-11-25 15:36:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515332636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:59,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:59,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:36:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166932702] [2022-11-25 15:36:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:36:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:36:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:36:59,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:36:59,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 459 transitions, 7375 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:59,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:36:59,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:36:59,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:01,069 INFO L130 PetriNetUnfolder]: 1321/3157 cut-off events. [2022-11-25 15:37:01,069 INFO L131 PetriNetUnfolder]: For 36588/36627 co-relation queries the response was YES. [2022-11-25 15:37:01,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21514 conditions, 3157 events. 1321/3157 cut-off events. For 36588/36627 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24070 event pairs, 278 based on Foata normal form. 96/3247 useless extension candidates. Maximal degree in co-relation 21395. Up to 1164 conditions per place. [2022-11-25 15:37:01,105 INFO L137 encePairwiseOnDemand]: 167/185 looper letters, 293 selfloop transitions, 49 changer transitions 334/687 dead transitions. [2022-11-25 15:37:01,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 687 transitions, 11441 flow [2022-11-25 15:37:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:37:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 15:37:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1202 transitions. [2022-11-25 15:37:01,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43315315315315317 [2022-11-25 15:37:01,113 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1202 transitions. [2022-11-25 15:37:01,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1202 transitions. [2022-11-25 15:37:01,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:01,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1202 transitions. [2022-11-25 15:37:01,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.13333333333334) internal successors, (1202), 15 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:01,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:01,123 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 185.0) internal successors, (2960), 16 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:01,123 INFO L175 Difference]: Start difference. First operand has 203 places, 459 transitions, 7375 flow. Second operand 15 states and 1202 transitions. [2022-11-25 15:37:01,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 687 transitions, 11441 flow [2022-11-25 15:37:01,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 687 transitions, 11263 flow, removed 66 selfloop flow, removed 6 redundant places. [2022-11-25 15:37:01,452 INFO L231 Difference]: Finished difference. Result has 218 places, 302 transitions, 4717 flow [2022-11-25 15:37:01,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4717, PETRI_PLACES=218, PETRI_TRANSITIONS=302} [2022-11-25 15:37:01,454 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 179 predicate places. [2022-11-25 15:37:01,454 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 302 transitions, 4717 flow [2022-11-25 15:37:01,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:01,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:01,464 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:37:01,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash 71045324, now seen corresponding path program 4 times [2022-11-25 15:37:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:01,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219437037] [2022-11-25 15:37:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:02,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:02,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219437037] [2022-11-25 15:37:02,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219437037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:02,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:02,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:02,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442639199] [2022-11-25 15:37:02,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:02,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:02,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:02,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:37:02,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 302 transitions, 4717 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:02,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:02,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:37:02,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:03,566 INFO L130 PetriNetUnfolder]: 703/1844 cut-off events. [2022-11-25 15:37:03,566 INFO L131 PetriNetUnfolder]: For 23385/23481 co-relation queries the response was YES. [2022-11-25 15:37:03,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13236 conditions, 1844 events. 703/1844 cut-off events. For 23385/23481 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13488 event pairs, 130 based on Foata normal form. 52/1890 useless extension candidates. Maximal degree in co-relation 13111. Up to 700 conditions per place. [2022-11-25 15:37:03,586 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 192 selfloop transitions, 158 changer transitions 27/416 dead transitions. [2022-11-25 15:37:03,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 416 transitions, 7040 flow [2022-11-25 15:37:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 780 transitions. [2022-11-25 15:37:03,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2022-11-25 15:37:03,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 780 transitions. [2022-11-25 15:37:03,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 780 transitions. [2022-11-25 15:37:03,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:03,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 780 transitions. [2022-11-25 15:37:03,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:03,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:03,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:03,595 INFO L175 Difference]: Start difference. First operand has 218 places, 302 transitions, 4717 flow. Second operand 9 states and 780 transitions. [2022-11-25 15:37:03,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 416 transitions, 7040 flow [2022-11-25 15:37:03,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 416 transitions, 6369 flow, removed 183 selfloop flow, removed 24 redundant places. [2022-11-25 15:37:03,782 INFO L231 Difference]: Finished difference. Result has 191 places, 334 transitions, 5357 flow [2022-11-25 15:37:03,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4249, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5357, PETRI_PLACES=191, PETRI_TRANSITIONS=334} [2022-11-25 15:37:03,784 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 152 predicate places. [2022-11-25 15:37:03,784 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 334 transitions, 5357 flow [2022-11-25 15:37:03,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:03,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:03,784 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:03,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:37:03,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1901363542, now seen corresponding path program 2 times [2022-11-25 15:37:03,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:03,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216560407] [2022-11-25 15:37:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:03,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:04,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:04,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216560407] [2022-11-25 15:37:04,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216560407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:04,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:04,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:04,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554978872] [2022-11-25 15:37:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:04,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:04,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:04,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:04,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:37:04,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 334 transitions, 5357 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:04,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:04,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:37:04,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:05,888 INFO L130 PetriNetUnfolder]: 988/2487 cut-off events. [2022-11-25 15:37:05,888 INFO L131 PetriNetUnfolder]: For 27502/27537 co-relation queries the response was YES. [2022-11-25 15:37:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16186 conditions, 2487 events. 988/2487 cut-off events. For 27502/27537 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18523 event pairs, 297 based on Foata normal form. 42/2527 useless extension candidates. Maximal degree in co-relation 16077. Up to 951 conditions per place. [2022-11-25 15:37:05,922 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 311 selfloop transitions, 143 changer transitions 59/524 dead transitions. [2022-11-25 15:37:05,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 524 transitions, 8359 flow [2022-11-25 15:37:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 762 transitions. [2022-11-25 15:37:05,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45765765765765765 [2022-11-25 15:37:05,926 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 762 transitions. [2022-11-25 15:37:05,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 762 transitions. [2022-11-25 15:37:05,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:05,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 762 transitions. [2022-11-25 15:37:05,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:05,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:05,931 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:05,932 INFO L175 Difference]: Start difference. First operand has 191 places, 334 transitions, 5357 flow. Second operand 9 states and 762 transitions. [2022-11-25 15:37:05,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 524 transitions, 8359 flow [2022-11-25 15:37:06,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 524 transitions, 8018 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-11-25 15:37:06,124 INFO L231 Difference]: Finished difference. Result has 200 places, 372 transitions, 6148 flow [2022-11-25 15:37:06,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6148, PETRI_PLACES=200, PETRI_TRANSITIONS=372} [2022-11-25 15:37:06,125 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2022-11-25 15:37:06,125 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 372 transitions, 6148 flow [2022-11-25 15:37:06,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:06,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:06,126 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:06,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:37:06,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -668465723, now seen corresponding path program 3 times [2022-11-25 15:37:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:06,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541219042] [2022-11-25 15:37:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:06,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:06,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:06,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541219042] [2022-11-25 15:37:06,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541219042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:06,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:06,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870798572] [2022-11-25 15:37:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:06,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:07,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:37:07,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 372 transitions, 6148 flow. Second operand has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:07,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:07,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:37:07,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:08,552 INFO L130 PetriNetUnfolder]: 905/2358 cut-off events. [2022-11-25 15:37:08,552 INFO L131 PetriNetUnfolder]: For 30204/30278 co-relation queries the response was YES. [2022-11-25 15:37:08,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16151 conditions, 2358 events. 905/2358 cut-off events. For 30204/30278 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18216 event pairs, 138 based on Foata normal form. 59/2407 useless extension candidates. Maximal degree in co-relation 16037. Up to 1119 conditions per place. [2022-11-25 15:37:08,581 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 285 selfloop transitions, 104 changer transitions 82/518 dead transitions. [2022-11-25 15:37:08,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 518 transitions, 8928 flow [2022-11-25 15:37:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:37:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:37:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1031 transitions. [2022-11-25 15:37:08,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644144144144144 [2022-11-25 15:37:08,589 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1031 transitions. [2022-11-25 15:37:08,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1031 transitions. [2022-11-25 15:37:08,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:08,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1031 transitions. [2022-11-25 15:37:08,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 85.91666666666667) internal successors, (1031), 12 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:08,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:08,597 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 185.0) internal successors, (2405), 13 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:08,598 INFO L175 Difference]: Start difference. First operand has 200 places, 372 transitions, 6148 flow. Second operand 12 states and 1031 transitions. [2022-11-25 15:37:08,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 518 transitions, 8928 flow [2022-11-25 15:37:08,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 518 transitions, 8781 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-25 15:37:08,799 INFO L231 Difference]: Finished difference. Result has 216 places, 362 transitions, 6175 flow [2022-11-25 15:37:08,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6175, PETRI_PLACES=216, PETRI_TRANSITIONS=362} [2022-11-25 15:37:08,800 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 177 predicate places. [2022-11-25 15:37:08,801 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 362 transitions, 6175 flow [2022-11-25 15:37:08,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.77777777777777) internal successors, (691), 9 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:08,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:08,801 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:08,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:37:08,802 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1702985902, now seen corresponding path program 5 times [2022-11-25 15:37:08,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:08,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180867852] [2022-11-25 15:37:08,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:08,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:09,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180867852] [2022-11-25 15:37:09,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180867852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:09,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:09,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221976358] [2022-11-25 15:37:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:09,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:09,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:37:09,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 362 transitions, 6175 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:09,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:09,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:37:09,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:10,913 INFO L130 PetriNetUnfolder]: 909/2355 cut-off events. [2022-11-25 15:37:10,913 INFO L131 PetriNetUnfolder]: For 33483/33577 co-relation queries the response was YES. [2022-11-25 15:37:10,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16788 conditions, 2355 events. 909/2355 cut-off events. For 33483/33577 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18102 event pairs, 195 based on Foata normal form. 47/2391 useless extension candidates. Maximal degree in co-relation 16667. Up to 946 conditions per place. [2022-11-25 15:37:10,937 INFO L137 encePairwiseOnDemand]: 170/185 looper letters, 249 selfloop transitions, 177 changer transitions 45/503 dead transitions. [2022-11-25 15:37:10,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 503 transitions, 9133 flow [2022-11-25 15:37:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 777 transitions. [2022-11-25 15:37:10,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-11-25 15:37:10,940 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 777 transitions. [2022-11-25 15:37:10,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 777 transitions. [2022-11-25 15:37:10,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:10,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 777 transitions. [2022-11-25 15:37:10,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.33333333333333) internal successors, (777), 9 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:10,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:10,945 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:10,946 INFO L175 Difference]: Start difference. First operand has 216 places, 362 transitions, 6175 flow. Second operand 9 states and 777 transitions. [2022-11-25 15:37:10,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 503 transitions, 9133 flow [2022-11-25 15:37:11,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 503 transitions, 8823 flow, removed 29 selfloop flow, removed 16 redundant places. [2022-11-25 15:37:11,166 INFO L231 Difference]: Finished difference. Result has 206 places, 400 transitions, 7402 flow [2022-11-25 15:37:11,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=5909, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7402, PETRI_PLACES=206, PETRI_TRANSITIONS=400} [2022-11-25 15:37:11,167 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 167 predicate places. [2022-11-25 15:37:11,167 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 400 transitions, 7402 flow [2022-11-25 15:37:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:11,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:11,167 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:11,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:37:11,168 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash 138098015, now seen corresponding path program 4 times [2022-11-25 15:37:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:11,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425297964] [2022-11-25 15:37:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:11,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:37:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:16,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425297964] [2022-11-25 15:37:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425297964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461439431] [2022-11-25 15:37:16,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:37:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:37:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:37:16,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:37:16,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:37:16,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:37:16,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:37:16,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-25 15:37:16,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:16,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 15:37:16,811 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-25 15:37:16,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-25 15:37:16,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:37:16,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-25 15:37:16,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:37:16,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-25 15:37:16,890 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:37:16,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-25 15:37:16,952 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:37:16,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-25 15:37:17,010 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:37:17,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:37:17,133 INFO L321 Elim1Store]: treesize reduction 181, result has 21.0 percent of original size [2022-11-25 15:37:17,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 87 [2022-11-25 15:37:17,222 INFO L321 Elim1Store]: treesize reduction 181, result has 21.0 percent of original size [2022-11-25 15:37:17,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 76 treesize of output 87 [2022-11-25 15:37:17,512 INFO L321 Elim1Store]: treesize reduction 289, result has 14.2 percent of original size [2022-11-25 15:37:17,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 99 treesize of output 116 [2022-11-25 15:37:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:37:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:28,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461439431] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:28,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:28,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 19] total 36 [2022-11-25 15:37:28,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905506062] [2022-11-25 15:37:28,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:37:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:37:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1177, Unknown=4, NotChecked=0, Total=1332 [2022-11-25 15:37:29,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 185 [2022-11-25 15:37:29,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 400 transitions, 7402 flow. Second operand has 11 states, 11 states have (on average 72.63636363636364) internal successors, (799), 11 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:29,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:29,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 185 [2022-11-25 15:37:29,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:32,456 INFO L130 PetriNetUnfolder]: 944/2385 cut-off events. [2022-11-25 15:37:32,456 INFO L131 PetriNetUnfolder]: For 35670/35745 co-relation queries the response was YES. [2022-11-25 15:37:32,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 2385 events. 944/2385 cut-off events. For 35670/35745 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17815 event pairs, 215 based on Foata normal form. 103/2483 useless extension candidates. Maximal degree in co-relation 17063. Up to 1221 conditions per place. [2022-11-25 15:37:32,481 INFO L137 encePairwiseOnDemand]: 175/185 looper letters, 397 selfloop transitions, 62 changer transitions 66/552 dead transitions. [2022-11-25 15:37:32,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 552 transitions, 10738 flow [2022-11-25 15:37:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 745 transitions. [2022-11-25 15:37:32,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2022-11-25 15:37:32,484 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 745 transitions. [2022-11-25 15:37:32,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 745 transitions. [2022-11-25 15:37:32,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:32,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 745 transitions. [2022-11-25 15:37:32,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.77777777777777) internal successors, (745), 9 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:32,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:32,489 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:32,489 INFO L175 Difference]: Start difference. First operand has 206 places, 400 transitions, 7402 flow. Second operand 9 states and 745 transitions. [2022-11-25 15:37:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 552 transitions, 10738 flow [2022-11-25 15:37:32,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 552 transitions, 10588 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-11-25 15:37:32,668 INFO L231 Difference]: Finished difference. Result has 218 places, 391 transitions, 7322 flow [2022-11-25 15:37:32,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7308, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7322, PETRI_PLACES=218, PETRI_TRANSITIONS=391} [2022-11-25 15:37:32,669 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 179 predicate places. [2022-11-25 15:37:32,669 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 391 transitions, 7322 flow [2022-11-25 15:37:32,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.63636363636364) internal successors, (799), 11 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:32,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:32,669 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:32,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 15:37:32,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:37:32,876 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:32,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2001578822, now seen corresponding path program 3 times [2022-11-25 15:37:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:32,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354254354] [2022-11-25 15:37:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:33,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:33,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354254354] [2022-11-25 15:37:33,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354254354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:33,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:33,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832762904] [2022-11-25 15:37:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:33,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:37:33,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 391 transitions, 7322 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:33,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:33,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:37:33,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:34,671 INFO L130 PetriNetUnfolder]: 914/2257 cut-off events. [2022-11-25 15:37:34,671 INFO L131 PetriNetUnfolder]: For 34689/34718 co-relation queries the response was YES. [2022-11-25 15:37:34,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16773 conditions, 2257 events. 914/2257 cut-off events. For 34689/34718 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16053 event pairs, 246 based on Foata normal form. 67/2322 useless extension candidates. Maximal degree in co-relation 16651. Up to 1269 conditions per place. [2022-11-25 15:37:34,694 INFO L137 encePairwiseOnDemand]: 173/185 looper letters, 307 selfloop transitions, 142 changer transitions 55/514 dead transitions. [2022-11-25 15:37:34,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 514 transitions, 9779 flow [2022-11-25 15:37:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 748 transitions. [2022-11-25 15:37:34,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44924924924924925 [2022-11-25 15:37:34,697 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 748 transitions. [2022-11-25 15:37:34,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 748 transitions. [2022-11-25 15:37:34,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:34,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 748 transitions. [2022-11-25 15:37:34,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:34,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:34,702 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:34,702 INFO L175 Difference]: Start difference. First operand has 218 places, 391 transitions, 7322 flow. Second operand 9 states and 748 transitions. [2022-11-25 15:37:34,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 514 transitions, 9779 flow [2022-11-25 15:37:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 514 transitions, 9542 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-25 15:37:34,883 INFO L231 Difference]: Finished difference. Result has 226 places, 387 transitions, 7473 flow [2022-11-25 15:37:34,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7123, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7473, PETRI_PLACES=226, PETRI_TRANSITIONS=387} [2022-11-25 15:37:34,884 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 187 predicate places. [2022-11-25 15:37:34,884 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 387 transitions, 7473 flow [2022-11-25 15:37:34,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:34,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:34,884 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:34,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:37:34,885 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:34,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1761482952, now seen corresponding path program 3 times [2022-11-25 15:37:34,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:34,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439423942] [2022-11-25 15:37:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:34,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:35,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439423942] [2022-11-25 15:37:35,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439423942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:35,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:35,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636808755] [2022-11-25 15:37:35,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:35,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:35,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 185 [2022-11-25 15:37:35,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 387 transitions, 7473 flow. Second operand has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:35,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:35,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 185 [2022-11-25 15:37:35,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:36,552 INFO L130 PetriNetUnfolder]: 827/2054 cut-off events. [2022-11-25 15:37:36,552 INFO L131 PetriNetUnfolder]: For 36831/36847 co-relation queries the response was YES. [2022-11-25 15:37:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 2054 events. 827/2054 cut-off events. For 36831/36847 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14338 event pairs, 217 based on Foata normal form. 113/2166 useless extension candidates. Maximal degree in co-relation 15975. Up to 978 conditions per place. [2022-11-25 15:37:36,570 INFO L137 encePairwiseOnDemand]: 176/185 looper letters, 132 selfloop transitions, 23 changer transitions 421/579 dead transitions. [2022-11-25 15:37:36,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 579 transitions, 12052 flow [2022-11-25 15:37:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:37:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 15:37:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 677 transitions. [2022-11-25 15:37:36,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4574324324324324 [2022-11-25 15:37:36,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 677 transitions. [2022-11-25 15:37:36,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 677 transitions. [2022-11-25 15:37:36,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:36,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 677 transitions. [2022-11-25 15:37:36,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:36,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:36,577 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 185.0) internal successors, (1665), 9 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:36,577 INFO L175 Difference]: Start difference. First operand has 226 places, 387 transitions, 7473 flow. Second operand 8 states and 677 transitions. [2022-11-25 15:37:36,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 579 transitions, 12052 flow [2022-11-25 15:37:36,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 579 transitions, 11899 flow, removed 73 selfloop flow, removed 1 redundant places. [2022-11-25 15:37:36,776 INFO L231 Difference]: Finished difference. Result has 236 places, 136 transitions, 1987 flow [2022-11-25 15:37:36,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=7400, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1987, PETRI_PLACES=236, PETRI_TRANSITIONS=136} [2022-11-25 15:37:36,777 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 197 predicate places. [2022-11-25 15:37:36,777 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 136 transitions, 1987 flow [2022-11-25 15:37:36,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:36,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:36,777 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:36,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 15:37:36,777 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:36,778 INFO L85 PathProgramCache]: Analyzing trace with hash 13377860, now seen corresponding path program 6 times [2022-11-25 15:37:36,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:36,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586027668] [2022-11-25 15:37:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:36,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:37,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586027668] [2022-11-25 15:37:37,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586027668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:37:37,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:37:37,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:37:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60741945] [2022-11-25 15:37:37,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:37,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:37:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:37:37,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:37:37,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 185 [2022-11-25 15:37:37,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 136 transitions, 1987 flow. Second operand has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:37,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:37,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 185 [2022-11-25 15:37:37,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:38,266 INFO L130 PetriNetUnfolder]: 110/392 cut-off events. [2022-11-25 15:37:38,266 INFO L131 PetriNetUnfolder]: For 5485/5499 co-relation queries the response was YES. [2022-11-25 15:37:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3020 conditions, 392 events. 110/392 cut-off events. For 5485/5499 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1845 event pairs, 25 based on Foata normal form. 23/413 useless extension candidates. Maximal degree in co-relation 2928. Up to 164 conditions per place. [2022-11-25 15:37:38,270 INFO L137 encePairwiseOnDemand]: 172/185 looper letters, 81 selfloop transitions, 27 changer transitions 45/173 dead transitions. [2022-11-25 15:37:38,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 173 transitions, 2689 flow [2022-11-25 15:37:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:37:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:37:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 749 transitions. [2022-11-25 15:37:38,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4498498498498498 [2022-11-25 15:37:38,273 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 749 transitions. [2022-11-25 15:37:38,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 749 transitions. [2022-11-25 15:37:38,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:38,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 749 transitions. [2022-11-25 15:37:38,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:38,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:38,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:38,278 INFO L175 Difference]: Start difference. First operand has 236 places, 136 transitions, 1987 flow. Second operand 9 states and 749 transitions. [2022-11-25 15:37:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 173 transitions, 2689 flow [2022-11-25 15:37:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 173 transitions, 2095 flow, removed 119 selfloop flow, removed 45 redundant places. [2022-11-25 15:37:38,317 INFO L231 Difference]: Finished difference. Result has 180 places, 118 transitions, 1292 flow [2022-11-25 15:37:38,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=180, PETRI_TRANSITIONS=118} [2022-11-25 15:37:38,318 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2022-11-25 15:37:38,318 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 118 transitions, 1292 flow [2022-11-25 15:37:38,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.66666666666667) internal successors, (690), 9 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:38,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:38,319 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:38,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 15:37:38,319 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:38,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1830544773, now seen corresponding path program 5 times [2022-11-25 15:37:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:38,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731487333] [2022-11-25 15:37:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:37:41,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:37:41,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731487333] [2022-11-25 15:37:41,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731487333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:41,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087826089] [2022-11-25 15:37:41,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:37:41,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:37:41,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:37:41,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:37:41,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:37:41,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-25 15:37:41,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:37:41,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 15:37:41,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:41,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 15:37:41,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:37:41,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-25 15:37:41,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-25 15:37:41,761 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-25 15:37:41,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-25 15:37:41,820 INFO L321 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-25 15:37:41,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 56 [2022-11-25 15:37:41,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 15:37:41,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-25 15:37:41,911 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:37:41,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:37:41,976 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:37:41,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:37:42,038 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:37:42,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:37:42,298 INFO L321 Elim1Store]: treesize reduction 289, result has 14.2 percent of original size [2022-11-25 15:37:42,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 99 treesize of output 116 [2022-11-25 15:37:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:37:52,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:37:53,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087826089] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:37:53,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:37:53,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 18] total 32 [2022-11-25 15:37:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015623287] [2022-11-25 15:37:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:37:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:37:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:37:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:37:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=930, Unknown=4, NotChecked=0, Total=1056 [2022-11-25 15:37:54,298 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 185 [2022-11-25 15:37:54,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 118 transitions, 1292 flow. Second operand has 11 states, 11 states have (on average 72.63636363636364) internal successors, (799), 11 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:54,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:37:54,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 185 [2022-11-25 15:37:54,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:37:58,957 INFO L130 PetriNetUnfolder]: 98/352 cut-off events. [2022-11-25 15:37:58,958 INFO L131 PetriNetUnfolder]: For 2481/2482 co-relation queries the response was YES. [2022-11-25 15:37:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 352 events. 98/352 cut-off events. For 2481/2482 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1560 event pairs, 21 based on Foata normal form. 9/360 useless extension candidates. Maximal degree in co-relation 2186. Up to 145 conditions per place. [2022-11-25 15:37:58,960 INFO L137 encePairwiseOnDemand]: 172/185 looper letters, 100 selfloop transitions, 28 changer transitions 25/163 dead transitions. [2022-11-25 15:37:58,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 163 transitions, 2060 flow [2022-11-25 15:37:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:37:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 15:37:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 872 transitions. [2022-11-25 15:37:58,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4285012285012285 [2022-11-25 15:37:58,963 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 872 transitions. [2022-11-25 15:37:58,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 872 transitions. [2022-11-25 15:37:58,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:37:58,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 872 transitions. [2022-11-25 15:37:58,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 79.27272727272727) internal successors, (872), 11 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:58,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:58,967 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:58,967 INFO L175 Difference]: Start difference. First operand has 180 places, 118 transitions, 1292 flow. Second operand 11 states and 872 transitions. [2022-11-25 15:37:58,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 163 transitions, 2060 flow [2022-11-25 15:37:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 163 transitions, 1791 flow, removed 12 selfloop flow, removed 22 redundant places. [2022-11-25 15:37:58,987 INFO L231 Difference]: Finished difference. Result has 167 places, 113 transitions, 1092 flow [2022-11-25 15:37:58,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1092, PETRI_PLACES=167, PETRI_TRANSITIONS=113} [2022-11-25 15:37:58,988 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2022-11-25 15:37:58,988 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 113 transitions, 1092 flow [2022-11-25 15:37:58,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.63636363636364) internal successors, (799), 11 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:37:58,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:37:58,988 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:37:58,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:37:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 15:37:59,189 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:37:59,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:37:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash -13393197, now seen corresponding path program 6 times [2022-11-25 15:37:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:37:59,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291387133] [2022-11-25 15:37:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:37:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:37:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:38:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:38:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291387133] [2022-11-25 15:38:02,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291387133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:38:02,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293276345] [2022-11-25 15:38:02,371 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 15:38:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:38:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:38:02,373 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:38:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:38:02,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-25 15:38:02,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:38:02,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 15:38:02,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:38:02,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-25 15:38:02,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 15:38:02,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-25 15:38:02,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2022-11-25 15:38:02,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2022-11-25 15:38:02,795 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-25 15:38:02,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 15 [2022-11-25 15:38:02,889 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:38:02,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 71 [2022-11-25 15:38:02,958 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:38:02,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:38:03,016 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:38:03,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:38:03,072 INFO L321 Elim1Store]: treesize reduction 127, result has 27.4 percent of original size [2022-11-25 15:38:03,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 72 [2022-11-25 15:38:03,357 INFO L321 Elim1Store]: treesize reduction 289, result has 14.2 percent of original size [2022-11-25 15:38:03,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 99 treesize of output 116 [2022-11-25 15:38:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:38:17,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:38:17,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293276345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:38:17,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:38:17,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 28 [2022-11-25 15:38:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740705892] [2022-11-25 15:38:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:38:17,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:38:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:38:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:38:17,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=701, Unknown=6, NotChecked=0, Total=812 [2022-11-25 15:38:19,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:21,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:23,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:25,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:27,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:29,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:32,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:34,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:34,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 185 [2022-11-25 15:38:34,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 113 transitions, 1092 flow. Second operand has 11 states, 11 states have (on average 59.81818181818182) internal successors, (658), 11 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:34,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:38:34,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 185 [2022-11-25 15:38:34,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:38:36,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:40,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:44,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:46,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:48,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:38:48,854 INFO L130 PetriNetUnfolder]: 114/342 cut-off events. [2022-11-25 15:38:48,854 INFO L131 PetriNetUnfolder]: For 1835/1835 co-relation queries the response was YES. [2022-11-25 15:38:48,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 342 events. 114/342 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1362 event pairs, 21 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1953. Up to 204 conditions per place. [2022-11-25 15:38:48,857 INFO L137 encePairwiseOnDemand]: 169/185 looper letters, 102 selfloop transitions, 27 changer transitions 22/151 dead transitions. [2022-11-25 15:38:48,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 151 transitions, 1698 flow [2022-11-25 15:38:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:38:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 15:38:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2022-11-25 15:38:48,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3601965601965602 [2022-11-25 15:38:48,859 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 733 transitions. [2022-11-25 15:38:48,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 733 transitions. [2022-11-25 15:38:48,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:38:48,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 733 transitions. [2022-11-25 15:38:48,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 66.63636363636364) internal successors, (733), 11 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:48,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:48,863 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 185.0) internal successors, (2220), 12 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:48,863 INFO L175 Difference]: Start difference. First operand has 167 places, 113 transitions, 1092 flow. Second operand 11 states and 733 transitions. [2022-11-25 15:38:48,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 151 transitions, 1698 flow [2022-11-25 15:38:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 151 transitions, 1608 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-11-25 15:38:48,880 INFO L231 Difference]: Finished difference. Result has 168 places, 108 transitions, 1014 flow [2022-11-25 15:38:48,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1014, PETRI_PLACES=168, PETRI_TRANSITIONS=108} [2022-11-25 15:38:48,881 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2022-11-25 15:38:48,881 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 108 transitions, 1014 flow [2022-11-25 15:38:48,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 59.81818181818182) internal successors, (658), 11 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:38:48,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:38:48,882 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:38:48,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:38:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c40c7aa-8eed-4b2f-a14d-14e44b1de3f9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 15:38:49,088 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-25 15:38:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:38:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 825153532, now seen corresponding path program 4 times [2022-11-25 15:38:49,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:38:49,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463836371] [2022-11-25 15:38:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:38:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:38:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat