./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:48:34,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:34,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:34,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:34,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:34,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:34,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:34,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:34,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:34,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:34,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:34,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:34,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:34,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:34,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:34,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:34,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:34,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:34,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:34,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:34,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:34,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:34,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:34,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:34,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:34,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:34,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:34,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:34,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:34,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:34,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:34,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:34,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:34,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:34,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:34,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:34,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:34,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:34,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:34,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:34,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:34,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:48:34,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:34,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:34,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:34,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:34,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:48:34,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:48:34,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:34,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:34,538 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:34,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:34,540 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:48:34,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:48:34,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:34,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:48:34,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:34,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:48:34,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:48:34,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:48:34,542 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:48:34,542 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:48:34,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:34,542 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:34,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:48:34,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:34,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:34,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:48:34,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:34,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:34,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:48:34,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:48:34,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:34,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:48:34,545 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:48:34,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:48:34,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:48:34,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-11-18 18:48:34,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:34,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:34,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:34,939 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:34,940 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:34,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-18 18:48:35,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/data/99de7627b/5ffbe2ffa2a341c79b14600504afc39c/FLAG77baa9f9b [2022-11-18 18:48:35,767 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:35,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-18 18:48:35,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/data/99de7627b/5ffbe2ffa2a341c79b14600504afc39c/FLAG77baa9f9b [2022-11-18 18:48:36,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/data/99de7627b/5ffbe2ffa2a341c79b14600504afc39c [2022-11-18 18:48:36,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:36,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:36,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:36,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:36,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:36,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:36" (1/1) ... [2022-11-18 18:48:36,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df21a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:36, skipping insertion in model container [2022-11-18 18:48:36,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:36" (1/1) ... [2022-11-18 18:48:36,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:36,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:36,835 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,839 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,845 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,847 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:36,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:36,936 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,937 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,938 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,940 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:48:36,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:37,010 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:37,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37 WrapperNode [2022-11-18 18:48:37,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:37,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:37,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:37,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:37,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,086 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 268 [2022-11-18 18:48:37,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:37,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:37,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:37,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:37,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:37,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:37,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:37,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:37,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:37,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:37,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:37,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:48:37,278 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:48:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:48:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:48:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:48:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:48:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:48:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:48:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:48:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:48:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:48:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:37,282 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:48:37,573 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:37,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:38,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:38,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:38,416 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:48:38,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:38 BoogieIcfgContainer [2022-11-18 18:48:38,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:38,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:48:38,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:48:38,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:48:38,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:48:36" (1/3) ... [2022-11-18 18:48:38,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c07ed6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:38, skipping insertion in model container [2022-11-18 18:48:38,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37" (2/3) ... [2022-11-18 18:48:38,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c07ed6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:38, skipping insertion in model container [2022-11-18 18:48:38,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:38" (3/3) ... [2022-11-18 18:48:38,433 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-11-18 18:48:38,454 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:48:38,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:48:38,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 18:48:38,468 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:48:38,634 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:48:38,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 386 transitions, 782 flow [2022-11-18 18:48:38,856 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-11-18 18:48:38,856 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:48:38,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 680 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-11-18 18:48:38,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 386 transitions, 782 flow [2022-11-18 18:48:38,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 384 transitions, 774 flow [2022-11-18 18:48:38,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:48:38,897 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;@ed26441, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:48:38,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-18 18:48:38,917 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-18 18:48:38,920 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:48:38,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:38,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:38,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1493687603, now seen corresponding path program 1 times [2022-11-18 18:48:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053392962] [2022-11-18 18:48:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053392962] [2022-11-18 18:48:39,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053392962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:39,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:39,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436022093] [2022-11-18 18:48:39,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:39,962 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-18 18:48:39,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 384 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:39,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:39,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-18 18:48:39,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:41,276 INFO L130 PetriNetUnfolder]: 744/2697 cut-off events. [2022-11-18 18:48:41,276 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:48:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 2697 events. 744/2697 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16842 event pairs, 600 based on Foata normal form. 249/2569 useless extension candidates. Maximal degree in co-relation 3898. Up to 1463 conditions per place. [2022-11-18 18:48:41,364 INFO L137 encePairwiseOnDemand]: 364/386 looper letters, 134 selfloop transitions, 10 changer transitions 2/372 dead transitions. [2022-11-18 18:48:41,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 372 transitions, 1038 flow [2022-11-18 18:48:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1536 transitions. [2022-11-18 18:48:41,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6632124352331606 [2022-11-18 18:48:41,403 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1536 transitions. [2022-11-18 18:48:41,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1536 transitions. [2022-11-18 18:48:41,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:41,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1536 transitions. [2022-11-18 18:48:41,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,434 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,437 INFO L175 Difference]: Start difference. First operand has 375 places, 384 transitions, 774 flow. Second operand 6 states and 1536 transitions. [2022-11-18 18:48:41,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 372 transitions, 1038 flow [2022-11-18 18:48:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 372 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:48:41,458 INFO L231 Difference]: Finished difference. Result has 376 places, 370 transitions, 764 flow [2022-11-18 18:48:41,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=376, PETRI_TRANSITIONS=370} [2022-11-18 18:48:41,473 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-18 18:48:41,473 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 370 transitions, 764 flow [2022-11-18 18:48:41,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:41,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:41,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:48:41,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1374841415, now seen corresponding path program 1 times [2022-11-18 18:48:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:41,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339599788] [2022-11-18 18:48:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:41,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:41,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339599788] [2022-11-18 18:48:41,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339599788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:41,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:41,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397751629] [2022-11-18 18:48:41,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:41,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:41,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-18 18:48:41,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 370 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:41,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-18 18:48:41,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:43,242 INFO L130 PetriNetUnfolder]: 744/2693 cut-off events. [2022-11-18 18:48:43,243 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:48:43,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 2693 events. 744/2693 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16945 event pairs, 600 based on Foata normal form. 0/2320 useless extension candidates. Maximal degree in co-relation 4032. Up to 1461 conditions per place. [2022-11-18 18:48:43,273 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 132 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2022-11-18 18:48:43,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 1044 flow [2022-11-18 18:48:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-11-18 18:48:43,281 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6580310880829016 [2022-11-18 18:48:43,282 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-11-18 18:48:43,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-11-18 18:48:43,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:43,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-11-18 18:48:43,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,300 INFO L175 Difference]: Start difference. First operand has 376 places, 370 transitions, 764 flow. Second operand 6 states and 1524 transitions. [2022-11-18 18:48:43,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 1044 flow [2022-11-18 18:48:43,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:43,321 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 760 flow [2022-11-18 18:48:43,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-11-18 18:48:43,324 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-11-18 18:48:43,324 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 760 flow [2022-11-18 18:48:43,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:43,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:43,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:48:43,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:43,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1321628424, now seen corresponding path program 1 times [2022-11-18 18:48:43,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:43,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130117859] [2022-11-18 18:48:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:43,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:43,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130117859] [2022-11-18 18:48:43,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130117859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:43,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:43,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169464554] [2022-11-18 18:48:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:43,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:43,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 386 [2022-11-18 18:48:43,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:43,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 386 [2022-11-18 18:48:43,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:43,585 INFO L130 PetriNetUnfolder]: 7/492 cut-off events. [2022-11-18 18:48:43,585 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:48:43,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 492 events. 7/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1074 event pairs, 0 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 293. Up to 13 conditions per place. [2022-11-18 18:48:43,590 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 17 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-18 18:48:43,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 375 transitions, 812 flow [2022-11-18 18:48:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:48:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-18 18:48:43,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9602763385146805 [2022-11-18 18:48:43,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-18 18:48:43,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-18 18:48:43,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:43,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-18 18:48:43,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,611 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 760 flow. Second operand 3 states and 1112 transitions. [2022-11-18 18:48:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 375 transitions, 812 flow [2022-11-18 18:48:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 375 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:43,622 INFO L231 Difference]: Finished difference. Result has 370 places, 369 transitions, 752 flow [2022-11-18 18:48:43,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=752, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-11-18 18:48:43,626 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -5 predicate places. [2022-11-18 18:48:43,628 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 752 flow [2022-11-18 18:48:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:43,634 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:43,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:48:43,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:43,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2125069049, now seen corresponding path program 1 times [2022-11-18 18:48:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:43,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439955438] [2022-11-18 18:48:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:43,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:43,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339487730] [2022-11-18 18:48:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:43,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:43,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:43,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:43,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:48:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:43,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:48:43,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:44,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:48:44,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:48:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:44,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:48:44,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:48:44,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:44,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:48:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:44,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:44,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:44,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439955438] [2022-11-18 18:48:44,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339487730] [2022-11-18 18:48:44,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339487730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:44,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:44,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:48:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841885816] [2022-11-18 18:48:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:44,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:48:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:48:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:48:44,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 386 [2022-11-18 18:48:44,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:44,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:44,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 386 [2022-11-18 18:48:44,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:46,726 INFO L130 PetriNetUnfolder]: 1489/5407 cut-off events. [2022-11-18 18:48:46,726 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:48:46,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 5407 events. 1489/5407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35552 event pairs, 1200 based on Foata normal form. 0/4667 useless extension candidates. Maximal degree in co-relation 4205. Up to 1504 conditions per place. [2022-11-18 18:48:46,777 INFO L137 encePairwiseOnDemand]: 376/386 looper letters, 214 selfloop transitions, 9 changer transitions 0/453 dead transitions. [2022-11-18 18:48:46,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 453 transitions, 1370 flow [2022-11-18 18:48:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:48:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:48:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2321 transitions. [2022-11-18 18:48:46,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6681059297639609 [2022-11-18 18:48:46,785 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2321 transitions. [2022-11-18 18:48:46,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2321 transitions. [2022-11-18 18:48:46,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:46,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2321 transitions. [2022-11-18 18:48:46,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.8888888888889) internal successors, (2321), 9 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:46,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:46,806 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:46,806 INFO L175 Difference]: Start difference. First operand has 370 places, 369 transitions, 752 flow. Second operand 9 states and 2321 transitions. [2022-11-18 18:48:46,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 453 transitions, 1370 flow [2022-11-18 18:48:46,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 453 transitions, 1368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:48:46,817 INFO L231 Difference]: Finished difference. Result has 377 places, 369 transitions, 774 flow [2022-11-18 18:48:46,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=377, PETRI_TRANSITIONS=369} [2022-11-18 18:48:46,820 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 2 predicate places. [2022-11-18 18:48:46,821 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 369 transitions, 774 flow [2022-11-18 18:48:46,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:46,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:46,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:46,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:47,032 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:47,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1402626691, now seen corresponding path program 1 times [2022-11-18 18:48:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:47,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485074026] [2022-11-18 18:48:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:47,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485074026] [2022-11-18 18:48:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485074026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:47,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:47,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137897145] [2022-11-18 18:48:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:47,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:47,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:47,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:47,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 386 [2022-11-18 18:48:47,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 369 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:47,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 386 [2022-11-18 18:48:47,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:47,304 INFO L130 PetriNetUnfolder]: 7/680 cut-off events. [2022-11-18 18:48:47,304 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:48:47,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 680 events. 7/680 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1139 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2022-11-18 18:48:47,309 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2022-11-18 18:48:47,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 373 transitions, 808 flow [2022-11-18 18:48:47,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:48:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-18 18:48:47,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9628670120898101 [2022-11-18 18:48:47,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-18 18:48:47,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-18 18:48:47,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:47,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-18 18:48:47,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,325 INFO L175 Difference]: Start difference. First operand has 377 places, 369 transitions, 774 flow. Second operand 3 states and 1115 transitions. [2022-11-18 18:48:47,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 373 transitions, 808 flow [2022-11-18 18:48:47,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 373 transitions, 794 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:48:47,337 INFO L231 Difference]: Finished difference. Result has 373 places, 370 transitions, 772 flow [2022-11-18 18:48:47,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=370} [2022-11-18 18:48:47,339 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-11-18 18:48:47,339 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 370 transitions, 772 flow [2022-11-18 18:48:47,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:47,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:47,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:48:47,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1785682785, now seen corresponding path program 1 times [2022-11-18 18:48:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:47,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668543983] [2022-11-18 18:48:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:47,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359136849] [2022-11-18 18:48:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:47,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:47,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:47,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:48:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:47,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:48:47,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:47,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:48:47,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:48:47,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:47,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:48:47,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:47,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:48:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:47,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:47,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668543983] [2022-11-18 18:48:47,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:47,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359136849] [2022-11-18 18:48:47,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359136849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:47,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:47,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503640220] [2022-11-18 18:48:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:47,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 386 [2022-11-18 18:48:47,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 370 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:47,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:47,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 386 [2022-11-18 18:48:47,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:49,154 INFO L130 PetriNetUnfolder]: 745/3001 cut-off events. [2022-11-18 18:48:49,154 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:48:49,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 3001 events. 745/3001 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18217 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4194. Up to 1599 conditions per place. [2022-11-18 18:48:49,180 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2022-11-18 18:48:49,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 369 transitions, 1036 flow [2022-11-18 18:48:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-18 18:48:49,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6718480138169257 [2022-11-18 18:48:49,186 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-18 18:48:49,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-18 18:48:49,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:49,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-18 18:48:49,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:49,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:49,199 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:49,200 INFO L175 Difference]: Start difference. First operand has 373 places, 370 transitions, 772 flow. Second operand 6 states and 1556 transitions. [2022-11-18 18:48:49,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 369 transitions, 1036 flow [2022-11-18 18:48:49,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 369 transitions, 1034 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:48:49,208 INFO L231 Difference]: Finished difference. Result has 376 places, 369 transitions, 778 flow [2022-11-18 18:48:49,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=376, PETRI_TRANSITIONS=369} [2022-11-18 18:48:49,210 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-18 18:48:49,210 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 369 transitions, 778 flow [2022-11-18 18:48:49,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:49,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:49,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:49,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:49,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -255996463, now seen corresponding path program 1 times [2022-11-18 18:48:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327847190] [2022-11-18 18:48:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:49,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686607663] [2022-11-18 18:48:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:49,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:49,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:49,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:49,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:48:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:49,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:48:49,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:49,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:48:49,724 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 23 treesize of output 22 [2022-11-18 18:48:49,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:49,748 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 32 treesize of output 34 [2022-11-18 18:48:49,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:49,777 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 41 treesize of output 46 [2022-11-18 18:48:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:49,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:49,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327847190] [2022-11-18 18:48:49,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:49,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686607663] [2022-11-18 18:48:49,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686607663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:49,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:49,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:49,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175298184] [2022-11-18 18:48:49,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:49,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:49,809 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-18 18:48:49,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 369 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:49,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:49,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-18 18:48:49,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:50,907 INFO L130 PetriNetUnfolder]: 745/2997 cut-off events. [2022-11-18 18:48:50,907 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:48:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2997 events. 745/2997 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18149 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4243. Up to 1599 conditions per place. [2022-11-18 18:48:50,928 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/368 dead transitions. [2022-11-18 18:48:50,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1042 flow [2022-11-18 18:48:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2022-11-18 18:48:50,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6692573402417962 [2022-11-18 18:48:50,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2022-11-18 18:48:50,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2022-11-18 18:48:50,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:50,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2022-11-18 18:48:50,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:50,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:50,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:50,945 INFO L175 Difference]: Start difference. First operand has 376 places, 369 transitions, 778 flow. Second operand 6 states and 1550 transitions. [2022-11-18 18:48:50,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1042 flow [2022-11-18 18:48:50,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 368 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:50,954 INFO L231 Difference]: Finished difference. Result has 375 places, 368 transitions, 776 flow [2022-11-18 18:48:50,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=375, PETRI_TRANSITIONS=368} [2022-11-18 18:48:50,955 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 0 predicate places. [2022-11-18 18:48:50,956 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 368 transitions, 776 flow [2022-11-18 18:48:50,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:50,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:50,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:50,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:51,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 439730996, now seen corresponding path program 1 times [2022-11-18 18:48:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:51,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791038929] [2022-11-18 18:48:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:51,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:51,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105567287] [2022-11-18 18:48:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:51,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:51,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:48:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:48:51,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:51,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:48:51,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:48:51,543 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:51,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:48:51,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:51,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:48:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:51,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:51,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791038929] [2022-11-18 18:48:51,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:51,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105567287] [2022-11-18 18:48:51,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105567287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:51,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:51,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226909581] [2022-11-18 18:48:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:51,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-11-18 18:48:51,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 368 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:51,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:51,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-11-18 18:48:51,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:52,964 INFO L130 PetriNetUnfolder]: 745/2993 cut-off events. [2022-11-18 18:48:52,965 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:48:52,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2993 events. 745/2993 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18142 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4267. Up to 1603 conditions per place. [2022-11-18 18:48:53,006 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 129 selfloop transitions, 5 changer transitions 0/367 dead transitions. [2022-11-18 18:48:53,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 367 transitions, 1042 flow [2022-11-18 18:48:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1539 transitions. [2022-11-18 18:48:53,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6645077720207254 [2022-11-18 18:48:53,013 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1539 transitions. [2022-11-18 18:48:53,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1539 transitions. [2022-11-18 18:48:53,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:53,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1539 transitions. [2022-11-18 18:48:53,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:53,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:53,047 INFO L175 Difference]: Start difference. First operand has 375 places, 368 transitions, 776 flow. Second operand 6 states and 1539 transitions. [2022-11-18 18:48:53,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 367 transitions, 1042 flow [2022-11-18 18:48:53,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 367 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:53,060 INFO L231 Difference]: Finished difference. Result has 374 places, 367 transitions, 774 flow [2022-11-18 18:48:53,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=367} [2022-11-18 18:48:53,064 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, -1 predicate places. [2022-11-18 18:48:53,064 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 367 transitions, 774 flow [2022-11-18 18:48:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:53,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:53,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:53,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:53,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 18:48:53,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:53,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:53,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1029613211, now seen corresponding path program 1 times [2022-11-18 18:48:53,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:53,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998725841] [2022-11-18 18:48:53,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:53,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:53,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:53,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789912403] [2022-11-18 18:48:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:53,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:53,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:53,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:48:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:48:53,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:53,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:48:53,907 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 23 treesize of output 22 [2022-11-18 18:48:53,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:53,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 18:48:54,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:54,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-18 18:48:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:54,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998725841] [2022-11-18 18:48:54,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789912403] [2022-11-18 18:48:54,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789912403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:54,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:54,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:48:54,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871514231] [2022-11-18 18:48:54,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:48:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:48:54,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:48:54,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 386 [2022-11-18 18:48:54,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 367 transitions, 774 flow. Second operand has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:54,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:54,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 386 [2022-11-18 18:48:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:55,950 INFO L130 PetriNetUnfolder]: 745/2989 cut-off events. [2022-11-18 18:48:55,951 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:48:55,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 2989 events. 745/2989 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18093 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4304. Up to 1409 conditions per place. [2022-11-18 18:48:55,978 INFO L137 encePairwiseOnDemand]: 367/386 looper letters, 163 selfloop transitions, 26 changer transitions 0/406 dead transitions. [2022-11-18 18:48:55,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 406 transitions, 1236 flow [2022-11-18 18:48:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:48:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:48:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4789 transitions. [2022-11-18 18:48:55,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5907969405378731 [2022-11-18 18:48:55,991 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4789 transitions. [2022-11-18 18:48:55,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4789 transitions. [2022-11-18 18:48:55,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:55,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4789 transitions. [2022-11-18 18:48:56,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 228.04761904761904) internal successors, (4789), 21 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:56,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:56,022 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:56,022 INFO L175 Difference]: Start difference. First operand has 374 places, 367 transitions, 774 flow. Second operand 21 states and 4789 transitions. [2022-11-18 18:48:56,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 406 transitions, 1236 flow [2022-11-18 18:48:56,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 406 transitions, 1226 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:56,035 INFO L231 Difference]: Finished difference. Result has 391 places, 378 transitions, 863 flow [2022-11-18 18:48:56,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=863, PETRI_PLACES=391, PETRI_TRANSITIONS=378} [2022-11-18 18:48:56,037 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 16 predicate places. [2022-11-18 18:48:56,037 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 378 transitions, 863 flow [2022-11-18 18:48:56,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:56,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:56,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:56,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:56,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2141761406, now seen corresponding path program 1 times [2022-11-18 18:48:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754976322] [2022-11-18 18:48:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:56,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679613838] [2022-11-18 18:48:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:56,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:56,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:48:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:48:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:56,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:48:56,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:48:56,746 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:56,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:48:56,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:56,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:48:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:56,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:56,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754976322] [2022-11-18 18:48:56,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679613838] [2022-11-18 18:48:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679613838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:56,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:56,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118533264] [2022-11-18 18:48:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:56,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 386 [2022-11-18 18:48:56,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 378 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:56,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:56,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 386 [2022-11-18 18:48:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:57,839 INFO L130 PetriNetUnfolder]: 745/2985 cut-off events. [2022-11-18 18:48:57,840 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 18:48:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 2985 events. 745/2985 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18115 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4281. Up to 1591 conditions per place. [2022-11-18 18:48:57,863 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 127 selfloop transitions, 5 changer transitions 0/377 dead transitions. [2022-11-18 18:48:57,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 377 transitions, 1125 flow [2022-11-18 18:48:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:48:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1542 transitions. [2022-11-18 18:48:57,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6658031088082902 [2022-11-18 18:48:57,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1542 transitions. [2022-11-18 18:48:57,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1542 transitions. [2022-11-18 18:48:57,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:57,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1542 transitions. [2022-11-18 18:48:57,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:57,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:57,882 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:57,883 INFO L175 Difference]: Start difference. First operand has 391 places, 378 transitions, 863 flow. Second operand 6 states and 1542 transitions. [2022-11-18 18:48:57,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 377 transitions, 1125 flow [2022-11-18 18:48:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 377 transitions, 1106 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:48:57,895 INFO L231 Difference]: Finished difference. Result has 388 places, 377 transitions, 852 flow [2022-11-18 18:48:57,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=852, PETRI_PLACES=388, PETRI_TRANSITIONS=377} [2022-11-18 18:48:57,896 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 13 predicate places. [2022-11-18 18:48:57,896 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 377 transitions, 852 flow [2022-11-18 18:48:57,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:57,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:57,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:57,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:48:58,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 839344870, now seen corresponding path program 1 times [2022-11-18 18:48:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:58,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234701656] [2022-11-18 18:48:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:58,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:58,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012736204] [2022-11-18 18:48:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:58,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:58,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:48:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:58,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:58,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:58,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:58,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234701656] [2022-11-18 18:48:58,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:58,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012736204] [2022-11-18 18:48:58,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012736204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:58,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:48:58,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:48:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682888730] [2022-11-18 18:48:58,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:48:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:48:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:48:58,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-18 18:48:58,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 377 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:58,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:58,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-18 18:48:58,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:59,125 INFO L130 PetriNetUnfolder]: 7/846 cut-off events. [2022-11-18 18:48:59,125 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 18:48:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 846 events. 7/846 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 685 event pairs, 0 based on Foata normal form. 4/832 useless extension candidates. Maximal degree in co-relation 397. Up to 19 conditions per place. [2022-11-18 18:48:59,127 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 12 selfloop transitions, 9 changer transitions 0/387 dead transitions. [2022-11-18 18:48:59,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 387 transitions, 916 flow [2022-11-18 18:48:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:48:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:48:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-18 18:48:59,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9548071387449626 [2022-11-18 18:48:59,135 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-18 18:48:59,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-18 18:48:59,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:59,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-18 18:48:59,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:59,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:59,152 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:59,152 INFO L175 Difference]: Start difference. First operand has 388 places, 377 transitions, 852 flow. Second operand 9 states and 3317 transitions. [2022-11-18 18:48:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 387 transitions, 916 flow [2022-11-18 18:48:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 387 transitions, 906 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:59,161 INFO L231 Difference]: Finished difference. Result has 394 places, 383 transitions, 892 flow [2022-11-18 18:48:59,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=892, PETRI_PLACES=394, PETRI_TRANSITIONS=383} [2022-11-18 18:48:59,162 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 19 predicate places. [2022-11-18 18:48:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 383 transitions, 892 flow [2022-11-18 18:48:59,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:59,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:59,164 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:59,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:59,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:48:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1951053958, now seen corresponding path program 2 times [2022-11-18 18:48:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213109876] [2022-11-18 18:48:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:59,453 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:59,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118484763] [2022-11-18 18:48:59,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:48:59,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:59,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:59,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:59,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:48:59,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:48:59,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:59,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:48:59,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:59,865 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 [2022-11-18 18:48:59,876 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 [2022-11-18 18:48:59,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:59,896 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 [2022-11-18 18:48:59,926 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:48:59,926 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 [2022-11-18 18:48:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:48:59,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:59,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:59,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213109876] [2022-11-18 18:48:59,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:59,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118484763] [2022-11-18 18:48:59,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118484763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:59,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:59,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:48:59,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549935586] [2022-11-18 18:48:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:59,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:59,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-18 18:48:59,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 383 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:59,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:59,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-18 18:48:59,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:01,416 INFO L130 PetriNetUnfolder]: 1039/3441 cut-off events. [2022-11-18 18:49:01,416 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-18 18:49:01,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 3441 events. 1039/3441 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19187 event pairs, 870 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 5214. Up to 2233 conditions per place. [2022-11-18 18:49:01,441 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 138 selfloop transitions, 10 changer transitions 0/381 dead transitions. [2022-11-18 18:49:01,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 381 transitions, 1184 flow [2022-11-18 18:49:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:49:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2022-11-18 18:49:01,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6286701208981001 [2022-11-18 18:49:01,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2022-11-18 18:49:01,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2022-11-18 18:49:01,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:01,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2022-11-18 18:49:01,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:01,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:01,454 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:01,454 INFO L175 Difference]: Start difference. First operand has 394 places, 383 transitions, 892 flow. Second operand 6 states and 1456 transitions. [2022-11-18 18:49:01,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 381 transitions, 1184 flow [2022-11-18 18:49:01,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 381 transitions, 1178 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 18:49:01,464 INFO L231 Difference]: Finished difference. Result has 396 places, 381 transitions, 902 flow [2022-11-18 18:49:01,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=396, PETRI_TRANSITIONS=381} [2022-11-18 18:49:01,465 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 21 predicate places. [2022-11-18 18:49:01,465 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 381 transitions, 902 flow [2022-11-18 18:49:01,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:01,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:01,467 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:01,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:01,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash -245474544, now seen corresponding path program 1 times [2022-11-18 18:49:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:01,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160329834] [2022-11-18 18:49:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:01,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:01,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475220607] [2022-11-18 18:49:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:01,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:01,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:01,748 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:01,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:49:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:49:02,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:03,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:03,611 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160329834] [2022-11-18 18:49:03,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475220607] [2022-11-18 18:49:03,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475220607] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:03,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:49:03,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891366705] [2022-11-18 18:49:03,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:49:03,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:49:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:49:03,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-18 18:49:03,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 381 transitions, 902 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:03,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:03,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-18 18:49:03,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:04,362 INFO L130 PetriNetUnfolder]: 7/1572 cut-off events. [2022-11-18 18:49:04,362 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-18 18:49:04,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 1572 events. 7/1572 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 679 event pairs, 0 based on Foata normal form. 8/1564 useless extension candidates. Maximal degree in co-relation 1803. Up to 43 conditions per place. [2022-11-18 18:49:04,366 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 20 selfloop transitions, 21 changer transitions 0/405 dead transitions. [2022-11-18 18:49:04,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 405 transitions, 1084 flow [2022-11-18 18:49:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:49:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:49:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-18 18:49:04,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9537379718726869 [2022-11-18 18:49:04,377 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-18 18:49:04,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-18 18:49:04,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:04,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-18 18:49:04,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:04,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:04,406 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:04,407 INFO L175 Difference]: Start difference. First operand has 396 places, 381 transitions, 902 flow. Second operand 21 states and 7731 transitions. [2022-11-18 18:49:04,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 405 transitions, 1084 flow [2022-11-18 18:49:04,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 405 transitions, 1064 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:49:04,415 INFO L231 Difference]: Finished difference. Result has 416 places, 394 transitions, 1012 flow [2022-11-18 18:49:04,415 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1012, PETRI_PLACES=416, PETRI_TRANSITIONS=394} [2022-11-18 18:49:04,416 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 41 predicate places. [2022-11-18 18:49:04,416 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 394 transitions, 1012 flow [2022-11-18 18:49:04,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:04,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:04,418 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:04,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:04,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:04,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:04,627 INFO L85 PathProgramCache]: Analyzing trace with hash -238698544, now seen corresponding path program 2 times [2022-11-18 18:49:04,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:04,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408959479] [2022-11-18 18:49:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:04,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:04,771 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739664103] [2022-11-18 18:49:04,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:04,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:04,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:04,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:49:05,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:05,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:49:05,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:05,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:49:05,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:49:05,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:05,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:49:05,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:05,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:49:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 18:49:05,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408959479] [2022-11-18 18:49:05,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:05,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739664103] [2022-11-18 18:49:05,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739664103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:05,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:05,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:05,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164629770] [2022-11-18 18:49:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:05,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 386 [2022-11-18 18:49:05,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 394 transitions, 1012 flow. Second operand has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:05,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:05,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 386 [2022-11-18 18:49:05,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:08,226 INFO L130 PetriNetUnfolder]: 745/3896 cut-off events. [2022-11-18 18:49:08,226 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-18 18:49:08,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 3896 events. 745/3896 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17675 event pairs, 600 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 4999. Up to 1979 conditions per place. [2022-11-18 18:49:08,244 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 120 selfloop transitions, 5 changer transitions 0/393 dead transitions. [2022-11-18 18:49:08,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 393 transitions, 1260 flow [2022-11-18 18:49:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:49:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1554 transitions. [2022-11-18 18:49:08,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6709844559585493 [2022-11-18 18:49:08,247 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1554 transitions. [2022-11-18 18:49:08,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1554 transitions. [2022-11-18 18:49:08,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:08,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1554 transitions. [2022-11-18 18:49:08,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:08,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:08,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:08,254 INFO L175 Difference]: Start difference. First operand has 416 places, 394 transitions, 1012 flow. Second operand 6 states and 1554 transitions. [2022-11-18 18:49:08,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 393 transitions, 1260 flow [2022-11-18 18:49:08,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 393 transitions, 1236 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:49:08,266 INFO L231 Difference]: Finished difference. Result has 414 places, 393 transitions, 996 flow [2022-11-18 18:49:08,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=996, PETRI_PLACES=414, PETRI_TRANSITIONS=393} [2022-11-18 18:49:08,268 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 39 predicate places. [2022-11-18 18:49:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 393 transitions, 996 flow [2022-11-18 18:49:08,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:08,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:08,270 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:08,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:08,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:49:08,477 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:08,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash -890013826, now seen corresponding path program 1 times [2022-11-18 18:49:08,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:08,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841756360] [2022-11-18 18:49:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:08,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166101052] [2022-11-18 18:49:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:08,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:08,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:08,655 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:08,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:49:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:09,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:49:09,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:11,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:13,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841756360] [2022-11-18 18:49:13,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:13,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166101052] [2022-11-18 18:49:13,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166101052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:13,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:13,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:49:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081905965] [2022-11-18 18:49:13,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:13,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:49:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:49:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:49:13,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-18 18:49:13,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 393 transitions, 996 flow. Second operand has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:13,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:13,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-18 18:49:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:15,597 INFO L130 PetriNetUnfolder]: 7/3027 cut-off events. [2022-11-18 18:49:15,597 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2022-11-18 18:49:15,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 3027 events. 7/3027 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 676 event pairs, 0 based on Foata normal form. 16/3028 useless extension candidates. Maximal degree in co-relation 3910. Up to 91 conditions per place. [2022-11-18 18:49:15,602 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 36 selfloop transitions, 45 changer transitions 0/444 dead transitions. [2022-11-18 18:49:15,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 444 transitions, 1458 flow [2022-11-18 18:49:15,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:49:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:49:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-18 18:49:15,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9533103051237767 [2022-11-18 18:49:15,619 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-18 18:49:15,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-18 18:49:15,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:15,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-18 18:49:15,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 367.97777777777776) internal successors, (16559), 45 states have internal predecessors, (16559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:15,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:15,675 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:15,675 INFO L175 Difference]: Start difference. First operand has 414 places, 393 transitions, 996 flow. Second operand 45 states and 16559 transitions. [2022-11-18 18:49:15,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 444 transitions, 1458 flow [2022-11-18 18:49:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 444 transitions, 1448 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:49:15,692 INFO L231 Difference]: Finished difference. Result has 462 places, 418 transitions, 1288 flow [2022-11-18 18:49:15,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1288, PETRI_PLACES=462, PETRI_TRANSITIONS=418} [2022-11-18 18:49:15,693 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 87 predicate places. [2022-11-18 18:49:15,693 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 418 transitions, 1288 flow [2022-11-18 18:49:15,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:15,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:15,696 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:49:15,909 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -282501634, now seen corresponding path program 2 times [2022-11-18 18:49:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:15,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097750702] [2022-11-18 18:49:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:16,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:16,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936343483] [2022-11-18 18:49:16,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:16,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:16,217 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:16,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:49:17,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:17,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:17,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:49:17,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:17,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:49:17,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:49:17,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:17,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 18:49:17,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:17,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 18:49:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-18 18:49:17,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:17,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097750702] [2022-11-18 18:49:17,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936343483] [2022-11-18 18:49:17,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936343483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:17,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:17,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883260856] [2022-11-18 18:49:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:17,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-18 18:49:17,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 418 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:17,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:17,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-18 18:49:17,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:23,103 INFO L130 PetriNetUnfolder]: 745/5351 cut-off events. [2022-11-18 18:49:23,104 INFO L131 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2022-11-18 18:49:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 5351 events. 745/5351 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17655 event pairs, 600 based on Foata normal form. 0/4990 useless extension candidates. Maximal degree in co-relation 6333. Up to 2620 conditions per place. [2022-11-18 18:49:23,125 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 121 selfloop transitions, 5 changer transitions 0/417 dead transitions. [2022-11-18 18:49:23,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 417 transitions, 1538 flow [2022-11-18 18:49:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:49:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2022-11-18 18:49:23,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6662348877374784 [2022-11-18 18:49:23,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2022-11-18 18:49:23,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2022-11-18 18:49:23,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:23,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2022-11-18 18:49:23,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:23,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:23,133 INFO L175 Difference]: Start difference. First operand has 462 places, 418 transitions, 1288 flow. Second operand 6 states and 1543 transitions. [2022-11-18 18:49:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 417 transitions, 1538 flow [2022-11-18 18:49:23,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 417 transitions, 1482 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:49:23,147 INFO L231 Difference]: Finished difference. Result has 448 places, 417 transitions, 1240 flow [2022-11-18 18:49:23,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1240, PETRI_PLACES=448, PETRI_TRANSITIONS=417} [2022-11-18 18:49:23,148 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 73 predicate places. [2022-11-18 18:49:23,148 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 417 transitions, 1240 flow [2022-11-18 18:49:23,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:23,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:23,149 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:23,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:23,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:49:23,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:23,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387778, now seen corresponding path program 1 times [2022-11-18 18:49:23,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:23,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664330160] [2022-11-18 18:49:23,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:23,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:23,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:23,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256186102] [2022-11-18 18:49:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:23,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:23,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:23,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:23,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:49:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:26,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 5970 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:49:26,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:28,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:32,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664330160] [2022-11-18 18:49:32,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:32,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256186102] [2022-11-18 18:49:32,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256186102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:32,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:32,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:49:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595584747] [2022-11-18 18:49:32,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:32,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:49:32,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:49:32,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:49:32,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-18 18:49:32,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 417 transitions, 1240 flow. Second operand has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:32,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:32,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-18 18:49:32,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:41,476 INFO L130 PetriNetUnfolder]: 7/5756 cut-off events. [2022-11-18 18:49:41,476 INFO L131 PetriNetUnfolder]: For 4427/4427 co-relation queries the response was YES. [2022-11-18 18:49:41,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 5756 events. 7/5756 cut-off events. For 4427/4427 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 672 event pairs, 0 based on Foata normal form. 30/5772 useless extension candidates. Maximal degree in co-relation 7937. Up to 181 conditions per place. [2022-11-18 18:49:41,488 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 66 selfloop transitions, 90 changer transitions 0/518 dead transitions. [2022-11-18 18:49:41,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 518 transitions, 2326 flow [2022-11-18 18:49:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:49:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:49:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-18 18:49:41,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9531088082901554 [2022-11-18 18:49:41,526 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-18 18:49:41,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-18 18:49:41,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:41,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-18 18:49:41,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 367.9) internal successors, (33111), 90 states have internal predecessors, (33111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:41,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:41,647 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:41,647 INFO L175 Difference]: Start difference. First operand has 448 places, 417 transitions, 1240 flow. Second operand 90 states and 33111 transitions. [2022-11-18 18:49:41,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 518 transitions, 2326 flow [2022-11-18 18:49:41,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 518 transitions, 2316 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:49:41,679 INFO L231 Difference]: Finished difference. Result has 548 places, 463 transitions, 1884 flow [2022-11-18 18:49:41,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1884, PETRI_PLACES=548, PETRI_TRANSITIONS=463} [2022-11-18 18:49:41,680 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 173 predicate places. [2022-11-18 18:49:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 463 transitions, 1884 flow [2022-11-18 18:49:41,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:41,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:41,683 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:41,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:41,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:49:41,884 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:49:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:41,885 INFO L85 PathProgramCache]: Analyzing trace with hash -522050599, now seen corresponding path program 2 times [2022-11-18 18:49:41,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:41,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774788990] [2022-11-18 18:49:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:42,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:42,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857593966] [2022-11-18 18:49:42,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:42,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:42,390 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:42,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:49:44,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:49:44,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:44,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:49:44,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:44,938 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 [2022-11-18 18:49:44,955 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 [2022-11-18 18:49:44,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:44,977 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 [2022-11-18 18:49:45,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:49:45,017 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 [2022-11-18 18:49:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-18 18:49:45,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:45,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774788990] [2022-11-18 18:49:45,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857593966] [2022-11-18 18:49:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857593966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:45,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:45,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:49:45,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427471884] [2022-11-18 18:49:45,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:45,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:45,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-18 18:49:45,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 463 transitions, 1884 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:45,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:45,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-18 18:49:45,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:02,053 INFO L130 PetriNetUnfolder]: 1693/9847 cut-off events. [2022-11-18 18:50:02,053 INFO L131 PetriNetUnfolder]: For 2285/2285 co-relation queries the response was YES. [2022-11-18 18:50:02,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18039 conditions, 9847 events. 1693/9847 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32230 event pairs, 748 based on Foata normal form. 0/9235 useless extension candidates. Maximal degree in co-relation 12609. Up to 4851 conditions per place. [2022-11-18 18:50:02,117 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 259 selfloop transitions, 23 changer transitions 0/599 dead transitions. [2022-11-18 18:50:02,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 599 transitions, 2728 flow [2022-11-18 18:50:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:50:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:50:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1589 transitions. [2022-11-18 18:50:02,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6860967184801382 [2022-11-18 18:50:02,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1589 transitions. [2022-11-18 18:50:02,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1589 transitions. [2022-11-18 18:50:02,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:02,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1589 transitions. [2022-11-18 18:50:02,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.8333333333333) internal successors, (1589), 6 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,129 INFO L175 Difference]: Start difference. First operand has 548 places, 463 transitions, 1884 flow. Second operand 6 states and 1589 transitions. [2022-11-18 18:50:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 599 transitions, 2728 flow [2022-11-18 18:50:02,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 599 transitions, 2610 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:50:02,173 INFO L231 Difference]: Finished difference. Result has 516 places, 485 transitions, 1924 flow [2022-11-18 18:50:02,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=516, PETRI_TRANSITIONS=485} [2022-11-18 18:50:02,175 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 141 predicate places. [2022-11-18 18:50:02,175 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 485 transitions, 1924 flow [2022-11-18 18:50:02,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:02,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:02,177 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:02,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:50:02,389 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash 134098110, now seen corresponding path program 1 times [2022-11-18 18:50:02,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:02,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015938896] [2022-11-18 18:50:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:03,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:03,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819326430] [2022-11-18 18:50:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:03,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:03,065 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:03,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:50:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:07,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 11533 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:50:07,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:50:14,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:50:21,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:21,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015938896] [2022-11-18 18:50:21,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819326430] [2022-11-18 18:50:21,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819326430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:21,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:21,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:50:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004867551] [2022-11-18 18:50:21,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:21,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:50:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:21,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:50:21,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:50:21,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 386 [2022-11-18 18:50:21,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 485 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:21,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:21,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 386 [2022-11-18 18:50:21,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:50:38,568 INFO L130 PetriNetUnfolder]: 76/9081 cut-off events. [2022-11-18 18:50:38,568 INFO L131 PetriNetUnfolder]: For 3477/3480 co-relation queries the response was YES. [2022-11-18 18:50:38,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12806 conditions, 9081 events. 76/9081 cut-off events. For 3477/3480 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3624 event pairs, 8 based on Foata normal form. 2/9007 useless extension candidates. Maximal degree in co-relation 12242. Up to 271 conditions per place. [2022-11-18 18:50:38,598 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 22 selfloop transitions, 9 changer transitions 0/500 dead transitions. [2022-11-18 18:50:38,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 500 transitions, 2025 flow [2022-11-18 18:50:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:50:38,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-18 18:50:38,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9496257915947035 [2022-11-18 18:50:38,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-18 18:50:38,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-18 18:50:38,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:50:38,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-18 18:50:38,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 366.55555555555554) internal successors, (3299), 9 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:38,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:38,615 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:38,615 INFO L175 Difference]: Start difference. First operand has 516 places, 485 transitions, 1924 flow. Second operand 9 states and 3299 transitions. [2022-11-18 18:50:38,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 500 transitions, 2025 flow [2022-11-18 18:50:38,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 500 transitions, 2025 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:50:38,660 INFO L231 Difference]: Finished difference. Result has 527 places, 491 transitions, 1974 flow [2022-11-18 18:50:38,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=527, PETRI_TRANSITIONS=491} [2022-11-18 18:50:38,662 INFO L288 CegarLoopForPetriNet]: 375 programPoint places, 152 predicate places. [2022-11-18 18:50:38,662 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 491 transitions, 1974 flow [2022-11-18 18:50:38,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:38,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:50:38,666 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:38,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:38,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:38,883 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-18 18:50:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:38,885 INFO L85 PathProgramCache]: Analyzing trace with hash 732448584, now seen corresponding path program 2 times [2022-11-18 18:50:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:38,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337969558] [2022-11-18 18:50:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:38,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:40,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:40,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147712559] [2022-11-18 18:50:40,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:50:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:40,422 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:40,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4133e6e-e190-490d-a04c-fe4ef08cd200/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:50:46,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:50:46,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:50:46,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:50:46,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:46,486 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 [2022-11-18 18:50:46,496 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 [2022-11-18 18:50:46,519 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:46,519 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 [2022-11-18 18:50:46,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:50:46,560 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 [2022-11-18 18:50:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-18 18:50:46,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:46,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:46,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337969558] [2022-11-18 18:50:46,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:46,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147712559] [2022-11-18 18:50:46,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147712559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:46,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:46,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633754688] [2022-11-18 18:50:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:46,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:50:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:50:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:50:46,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-18 18:50:46,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 491 transitions, 1974 flow. Second operand has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:50:46,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:50:46,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-18 18:50:46,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand