./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:01:17,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:17,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:17,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:17,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:17,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:17,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:17,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:17,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:17,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:17,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:17,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:17,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:17,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:17,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:17,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:17,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:17,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:17,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:17,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:17,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:17,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:17,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:17,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:17,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:17,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:17,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:17,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:17,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:17,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:17,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:17,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:17,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:17,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:17,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:17,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:17,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:17,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:17,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:17,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:17,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:17,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:01:17,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:17,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:17,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:17,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:17,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:17,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:17,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:17,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:17,508 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:17,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:17,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:01:17,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:01:17,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:17,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:01:17,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:17,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:17,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:17,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:17,512 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:01:17,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:01:17,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:17,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:17,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:17,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:17,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:17,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:17,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:17,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:17,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:17,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:17,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:17,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:17,516 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:17,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:17,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:17,517 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_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-02 21:01:17,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:17,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:17,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:17,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:17,805 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:17,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-02 21:01:17,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/data/649b4ea27/d4b7c9c38ad847d6b0aedae449e59cff/FLAG88041b86c [2022-11-02 21:01:18,473 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:18,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-02 21:01:18,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/data/649b4ea27/d4b7c9c38ad847d6b0aedae449e59cff/FLAG88041b86c [2022-11-02 21:01:18,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/data/649b4ea27/d4b7c9c38ad847d6b0aedae449e59cff [2022-11-02 21:01:18,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:18,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:18,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:18,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:18,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:18,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:18" (1/1) ... [2022-11-02 21:01:18,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de8887e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:18, skipping insertion in model container [2022-11-02 21:01:18,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:18" (1/1) ... [2022-11-02 21:01:18,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:18,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:19,271 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,272 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,273 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,275 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:19,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:19,344 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,345 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,345 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,346 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 21:01:19,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:19,428 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:19,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19 WrapperNode [2022-11-02 21:01:19,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:19,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:19,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:19,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:19,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,529 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 217 [2022-11-02 21:01:19,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:19,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:19,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:19,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:19,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:19,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:19,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:19,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:19,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (1/1) ... [2022-11-02 21:01:19,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:19,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:19,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:19,668 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 21:01:19,668 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 21:01:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:01:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 21:01:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:01:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:01:19,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:01:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:01:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:01:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:01:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 21:01:19,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:19,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:19,672 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:01:19,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:19,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:20,400 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:20,409 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:20,410 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:01:20,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:20 BoogieIcfgContainer [2022-11-02 21:01:20,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:20,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:20,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:20,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:20,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:18" (1/3) ... [2022-11-02 21:01:20,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffb5a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:20, skipping insertion in model container [2022-11-02 21:01:20,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:19" (2/3) ... [2022-11-02 21:01:20,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffb5a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:20, skipping insertion in model container [2022-11-02 21:01:20,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:20" (3/3) ... [2022-11-02 21:01:20,431 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-02 21:01:20,441 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:01:20,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:20,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-02 21:01:20,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:01:20,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 21:01:20,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 319 transitions, 648 flow [2022-11-02 21:01:20,771 INFO L130 PetriNetUnfolder]: 15/317 cut-off events. [2022-11-02 21:01:20,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:01:20,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 317 events. 15/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 591 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2022-11-02 21:01:20,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 319 transitions, 648 flow [2022-11-02 21:01:20,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 317 transitions, 640 flow [2022-11-02 21:01:20,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:20,817 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;@7ef0cbbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:20,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-02 21:01:20,838 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-02 21:01:20,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:01:20,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:20,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:20,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:20,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:20,847 INFO L85 PathProgramCache]: Analyzing trace with hash 331473428, now seen corresponding path program 1 times [2022-11-02 21:01:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962885671] [2022-11-02 21:01:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:20,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962885671] [2022-11-02 21:01:21,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962885671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:21,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:21,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830584419] [2022-11-02 21:01:21,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:21,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:21,904 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 319 [2022-11-02 21:01:21,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 317 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:21,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:21,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 319 [2022-11-02 21:01:21,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:22,905 INFO L130 PetriNetUnfolder]: 744/2631 cut-off events. [2022-11-02 21:01:22,906 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-02 21:01:22,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 2631 events. 744/2631 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17662 event pairs, 600 based on Foata normal form. 248/2507 useless extension candidates. Maximal degree in co-relation 3898. Up to 1439 conditions per place. [2022-11-02 21:01:22,931 INFO L137 encePairwiseOnDemand]: 298/319 looper letters, 110 selfloop transitions, 10 changer transitions 1/306 dead transitions. [2022-11-02 21:01:22,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 306 transitions, 858 flow [2022-11-02 21:01:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2022-11-02 21:01:22,949 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6577847439916406 [2022-11-02 21:01:22,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2022-11-02 21:01:22,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2022-11-02 21:01:22,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:22,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2022-11-02 21:01:22,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,975 INFO L175 Difference]: Start difference. First operand has 309 places, 317 transitions, 640 flow. Second operand 6 states and 1259 transitions. [2022-11-02 21:01:22,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 306 transitions, 858 flow [2022-11-02 21:01:22,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 306 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:01:22,987 INFO L231 Difference]: Finished difference. Result has 310 places, 305 transitions, 634 flow [2022-11-02 21:01:22,989 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=310, PETRI_TRANSITIONS=305} [2022-11-02 21:01:22,993 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 1 predicate places. [2022-11-02 21:01:22,994 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 305 transitions, 634 flow [2022-11-02 21:01:22,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:22,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:01:22,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1614951113, now seen corresponding path program 1 times [2022-11-02 21:01:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:22,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247191597] [2022-11-02 21:01:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:23,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247191597] [2022-11-02 21:01:23,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247191597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:23,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:23,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267273946] [2022-11-02 21:01:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:23,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:23,453 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 319 [2022-11-02 21:01:23,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 305 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:23,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:23,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 319 [2022-11-02 21:01:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:24,295 INFO L130 PetriNetUnfolder]: 744/2628 cut-off events. [2022-11-02 21:01:24,295 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:01:24,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 2628 events. 744/2628 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17413 event pairs, 600 based on Foata normal form. 0/2259 useless extension candidates. Maximal degree in co-relation 3943. Up to 1437 conditions per place. [2022-11-02 21:01:24,324 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 108 selfloop transitions, 10 changer transitions 0/303 dead transitions. [2022-11-02 21:01:24,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 303 transitions, 866 flow [2022-11-02 21:01:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1248 transitions. [2022-11-02 21:01:24,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6520376175548589 [2022-11-02 21:01:24,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1248 transitions. [2022-11-02 21:01:24,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1248 transitions. [2022-11-02 21:01:24,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:24,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1248 transitions. [2022-11-02 21:01:24,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,340 INFO L175 Difference]: Start difference. First operand has 310 places, 305 transitions, 634 flow. Second operand 6 states and 1248 transitions. [2022-11-02 21:01:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 303 transitions, 866 flow [2022-11-02 21:01:24,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 303 transitions, 846 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:24,348 INFO L231 Difference]: Finished difference. Result has 307 places, 303 transitions, 630 flow [2022-11-02 21:01:24,349 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-11-02 21:01:24,350 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, -2 predicate places. [2022-11-02 21:01:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 630 flow [2022-11-02 21:01:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:24,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:24,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:01:24,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2083926756, now seen corresponding path program 1 times [2022-11-02 21:01:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672997882] [2022-11-02 21:01:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:24,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:24,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672997882] [2022-11-02 21:01:24,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672997882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:24,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:24,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56022178] [2022-11-02 21:01:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:24,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:24,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:24,428 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 319 [2022-11-02 21:01:24,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:24,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 319 [2022-11-02 21:01:24,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:24,578 INFO L130 PetriNetUnfolder]: 7/427 cut-off events. [2022-11-02 21:01:24,578 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:01:24,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 427 events. 7/427 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1026 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 220. Up to 13 conditions per place. [2022-11-02 21:01:24,582 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 17 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-11-02 21:01:24,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 310 transitions, 682 flow [2022-11-02 21:01:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:01:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2022-11-02 21:01:24,587 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.955067920585162 [2022-11-02 21:01:24,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2022-11-02 21:01:24,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2022-11-02 21:01:24,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:24,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2022-11-02 21:01:24,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,594 INFO L175 Difference]: Start difference. First operand has 307 places, 303 transitions, 630 flow. Second operand 3 states and 914 transitions. [2022-11-02 21:01:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 310 transitions, 682 flow [2022-11-02 21:01:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 310 transitions, 662 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:24,601 INFO L231 Difference]: Finished difference. Result has 305 places, 304 transitions, 622 flow [2022-11-02 21:01:24,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=305, PETRI_TRANSITIONS=304} [2022-11-02 21:01:24,605 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, -4 predicate places. [2022-11-02 21:01:24,605 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 304 transitions, 622 flow [2022-11-02 21:01:24,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:24,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:01:24,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1720024373, now seen corresponding path program 1 times [2022-11-02 21:01:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631800461] [2022-11-02 21:01:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:24,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:24,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292428477] [2022-11-02 21:01:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:24,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:24,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:24,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:01:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:01:24,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:24,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:24,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:24,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:25,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:25,011 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:25,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 21:01:25,062 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:25,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:25,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:25,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631800461] [2022-11-02 21:01:25,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:25,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292428477] [2022-11-02 21:01:25,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292428477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:25,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:25,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:25,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340322466] [2022-11-02 21:01:25,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:25,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:25,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 319 [2022-11-02 21:01:25,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 304 transitions, 622 flow. Second operand has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:25,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:25,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 319 [2022-11-02 21:01:25,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:26,745 INFO L130 PetriNetUnfolder]: 1489/5269 cut-off events. [2022-11-02 21:01:26,746 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 21:01:26,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8282 conditions, 5269 events. 1489/5269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 35971 event pairs, 1200 based on Foata normal form. 0/4537 useless extension candidates. Maximal degree in co-relation 4108. Up to 1480 conditions per place. [2022-11-02 21:01:26,794 INFO L137 encePairwiseOnDemand]: 309/319 looper letters, 166 selfloop transitions, 9 changer transitions 0/364 dead transitions. [2022-11-02 21:01:26,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 364 transitions, 1096 flow [2022-11-02 21:01:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:01:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1895 transitions. [2022-11-02 21:01:26,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6600487634970393 [2022-11-02 21:01:26,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1895 transitions. [2022-11-02 21:01:26,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1895 transitions. [2022-11-02 21:01:26,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:26,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1895 transitions. [2022-11-02 21:01:26,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.55555555555554) internal successors, (1895), 9 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,816 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,816 INFO L175 Difference]: Start difference. First operand has 305 places, 304 transitions, 622 flow. Second operand 9 states and 1895 transitions. [2022-11-02 21:01:26,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 364 transitions, 1096 flow [2022-11-02 21:01:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 364 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:01:26,826 INFO L231 Difference]: Finished difference. Result has 312 places, 304 transitions, 644 flow [2022-11-02 21:01:26,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=312, PETRI_TRANSITIONS=304} [2022-11-02 21:01:26,827 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 3 predicate places. [2022-11-02 21:01:26,827 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 304 transitions, 644 flow [2022-11-02 21:01:26,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:26,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:26,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 21:01:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:27,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 818834926, now seen corresponding path program 1 times [2022-11-02 21:01:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:27,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669619367] [2022-11-02 21:01:27,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669619367] [2022-11-02 21:01:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669619367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362153915] [2022-11-02 21:01:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:27,142 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 319 [2022-11-02 21:01:27,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 304 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:27,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 319 [2022-11-02 21:01:27,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:27,290 INFO L130 PetriNetUnfolder]: 7/615 cut-off events. [2022-11-02 21:01:27,290 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 21:01:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 615 events. 7/615 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1019 event pairs, 0 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-02 21:01:27,294 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 11 selfloop transitions, 2 changer transitions 0/308 dead transitions. [2022-11-02 21:01:27,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 308 transitions, 678 flow [2022-11-02 21:01:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:01:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2022-11-02 21:01:27,297 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9582027168234065 [2022-11-02 21:01:27,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2022-11-02 21:01:27,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2022-11-02 21:01:27,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:27,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2022-11-02 21:01:27,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,303 INFO L175 Difference]: Start difference. First operand has 312 places, 304 transitions, 644 flow. Second operand 3 states and 917 transitions. [2022-11-02 21:01:27,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 308 transitions, 678 flow [2022-11-02 21:01:27,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 308 transitions, 664 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-02 21:01:27,310 INFO L231 Difference]: Finished difference. Result has 308 places, 305 transitions, 642 flow [2022-11-02 21:01:27,310 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=308, PETRI_TRANSITIONS=305} [2022-11-02 21:01:27,311 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, -1 predicate places. [2022-11-02 21:01:27,311 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 305 transitions, 642 flow [2022-11-02 21:01:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:27,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:27,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:01:27,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -129668867, now seen corresponding path program 1 times [2022-11-02 21:01:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:27,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593458460] [2022-11-02 21:01:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:27,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:27,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691671370] [2022-11-02 21:01:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:27,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:27,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:27,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:27,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:01:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:27,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:27,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:27,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:27,568 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:27,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:27,598 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:27,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:27,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593458460] [2022-11-02 21:01:27,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691671370] [2022-11-02 21:01:27,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691671370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:27,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:27,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706084529] [2022-11-02 21:01:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:27,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:27,627 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 319 [2022-11-02 21:01:27,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 305 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:27,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 319 [2022-11-02 21:01:27,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:28,651 INFO L130 PetriNetUnfolder]: 745/2936 cut-off events. [2022-11-02 21:01:28,651 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 21:01:28,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 2936 events. 745/2936 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18397 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4097. Up to 1575 conditions per place. [2022-11-02 21:01:28,671 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 104 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2022-11-02 21:01:28,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 304 transitions, 858 flow [2022-11-02 21:01:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1280 transitions. [2022-11-02 21:01:28,675 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6687565308254964 [2022-11-02 21:01:28,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1280 transitions. [2022-11-02 21:01:28,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1280 transitions. [2022-11-02 21:01:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:28,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1280 transitions. [2022-11-02 21:01:28,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,684 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,685 INFO L175 Difference]: Start difference. First operand has 308 places, 305 transitions, 642 flow. Second operand 6 states and 1280 transitions. [2022-11-02 21:01:28,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 304 transitions, 858 flow [2022-11-02 21:01:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 304 transitions, 856 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:01:28,691 INFO L231 Difference]: Finished difference. Result has 311 places, 304 transitions, 648 flow [2022-11-02 21:01:28,692 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=311, PETRI_TRANSITIONS=304} [2022-11-02 21:01:28,693 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 2 predicate places. [2022-11-02 21:01:28,693 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 304 transitions, 648 flow [2022-11-02 21:01:28,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:28,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:28,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:28,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:28,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:28,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1206140671, now seen corresponding path program 1 times [2022-11-02 21:01:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:28,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502182250] [2022-11-02 21:01:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:28,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:28,948 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:28,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78318209] [2022-11-02 21:01:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:28,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:28,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:28,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:28,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:01:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:29,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:29,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:29,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:29,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:29,205 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:29,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:29,238 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:29,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:29,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:29,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:29,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502182250] [2022-11-02 21:01:29,263 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:29,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78318209] [2022-11-02 21:01:29,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78318209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:29,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:29,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:29,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460984188] [2022-11-02 21:01:29,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:29,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:29,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:29,267 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 319 [2022-11-02 21:01:29,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 304 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:29,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:29,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 319 [2022-11-02 21:01:29,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:30,259 INFO L130 PetriNetUnfolder]: 745/2932 cut-off events. [2022-11-02 21:01:30,260 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:01:30,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 2932 events. 745/2932 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18383 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4146. Up to 1575 conditions per place. [2022-11-02 21:01:30,287 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 104 selfloop transitions, 5 changer transitions 0/303 dead transitions. [2022-11-02 21:01:30,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 303 transitions, 864 flow [2022-11-02 21:01:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1274 transitions. [2022-11-02 21:01:30,293 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6656217345872518 [2022-11-02 21:01:30,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1274 transitions. [2022-11-02 21:01:30,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1274 transitions. [2022-11-02 21:01:30,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:30,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1274 transitions. [2022-11-02 21:01:30,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.33333333333334) internal successors, (1274), 6 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,304 INFO L175 Difference]: Start difference. First operand has 311 places, 304 transitions, 648 flow. Second operand 6 states and 1274 transitions. [2022-11-02 21:01:30,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 303 transitions, 864 flow [2022-11-02 21:01:30,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 303 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:30,311 INFO L231 Difference]: Finished difference. Result has 310 places, 303 transitions, 646 flow [2022-11-02 21:01:30,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=310, PETRI_TRANSITIONS=303} [2022-11-02 21:01:30,313 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 1 predicate places. [2022-11-02 21:01:30,313 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 303 transitions, 646 flow [2022-11-02 21:01:30,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:30,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:30,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:30,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash -127859489, now seen corresponding path program 1 times [2022-11-02 21:01:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132607239] [2022-11-02 21:01:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:30,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:30,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793828749] [2022-11-02 21:01:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:30,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:30,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:30,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:01:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:30,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:30,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:30,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:30,859 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:30,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:30,884 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:30,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:30,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:30,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:30,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132607239] [2022-11-02 21:01:30,908 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:30,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793828749] [2022-11-02 21:01:30,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793828749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:30,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:30,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:30,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172121907] [2022-11-02 21:01:30,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:30,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:30,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:30,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:30,912 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-02 21:01:30,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 303 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:30,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:30,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-02 21:01:30,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:31,652 INFO L130 PetriNetUnfolder]: 745/2928 cut-off events. [2022-11-02 21:01:31,652 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:01:31,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 2928 events. 745/2928 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18392 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4170. Up to 1579 conditions per place. [2022-11-02 21:01:31,686 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 105 selfloop transitions, 5 changer transitions 0/302 dead transitions. [2022-11-02 21:01:31,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 302 transitions, 864 flow [2022-11-02 21:01:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-11-02 21:01:31,691 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6598746081504702 [2022-11-02 21:01:31,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-11-02 21:01:31,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-11-02 21:01:31,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:31,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-11-02 21:01:31,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,703 INFO L175 Difference]: Start difference. First operand has 310 places, 303 transitions, 646 flow. Second operand 6 states and 1263 transitions. [2022-11-02 21:01:31,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 302 transitions, 864 flow [2022-11-02 21:01:31,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 302 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:31,713 INFO L231 Difference]: Finished difference. Result has 309 places, 302 transitions, 644 flow [2022-11-02 21:01:31,714 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=309, PETRI_TRANSITIONS=302} [2022-11-02 21:01:31,718 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 0 predicate places. [2022-11-02 21:01:31,718 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 302 transitions, 644 flow [2022-11-02 21:01:31,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:31,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:31,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:31,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 21:01:31,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1333821413, now seen corresponding path program 1 times [2022-11-02 21:01:31,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:31,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390716839] [2022-11-02 21:01:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:31,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:31,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:31,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776027427] [2022-11-02 21:01:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:31,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:31,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:32,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:01:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:32,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:32,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:32,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:32,319 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:32,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:32,351 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:32,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:32,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:32,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:32,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390716839] [2022-11-02 21:01:32,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:32,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776027427] [2022-11-02 21:01:32,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776027427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:32,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:32,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578375675] [2022-11-02 21:01:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:32,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:32,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-02 21:01:32,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 302 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:32,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:32,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-02 21:01:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:33,153 INFO L130 PetriNetUnfolder]: 745/2924 cut-off events. [2022-11-02 21:01:33,153 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:01:33,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 2924 events. 745/2924 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18308 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4182. Up to 1575 conditions per place. [2022-11-02 21:01:33,178 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 104 selfloop transitions, 5 changer transitions 0/301 dead transitions. [2022-11-02 21:01:33,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 301 transitions, 860 flow [2022-11-02 21:01:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1262 transitions. [2022-11-02 21:01:33,182 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6593521421107628 [2022-11-02 21:01:33,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1262 transitions. [2022-11-02 21:01:33,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1262 transitions. [2022-11-02 21:01:33,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:33,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1262 transitions. [2022-11-02 21:01:33,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.33333333333334) internal successors, (1262), 6 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,191 INFO L175 Difference]: Start difference. First operand has 309 places, 302 transitions, 644 flow. Second operand 6 states and 1262 transitions. [2022-11-02 21:01:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 301 transitions, 860 flow [2022-11-02 21:01:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 301 transitions, 850 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:33,197 INFO L231 Difference]: Finished difference. Result has 308 places, 301 transitions, 642 flow [2022-11-02 21:01:33,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=642, PETRI_PLACES=308, PETRI_TRANSITIONS=301} [2022-11-02 21:01:33,199 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, -1 predicate places. [2022-11-02 21:01:33,199 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 301 transitions, 642 flow [2022-11-02 21:01:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:33,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:33,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:33,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:33,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -354418331, now seen corresponding path program 1 times [2022-11-02 21:01:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:33,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348981382] [2022-11-02 21:01:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:33,457 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:33,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111060444] [2022-11-02 21:01:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:33,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:33,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:01:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:33,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:33,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:33,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:33,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:33,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:33,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:33,762 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:33,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:33,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:33,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:33,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348981382] [2022-11-02 21:01:33,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:33,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111060444] [2022-11-02 21:01:33,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111060444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:33,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:33,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694651230] [2022-11-02 21:01:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:33,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:33,788 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 319 [2022-11-02 21:01:33,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 301 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:33,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 319 [2022-11-02 21:01:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:34,731 INFO L130 PetriNetUnfolder]: 745/2920 cut-off events. [2022-11-02 21:01:34,732 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 21:01:34,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4612 conditions, 2920 events. 745/2920 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18260 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4192. Up to 1567 conditions per place. [2022-11-02 21:01:34,754 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 102 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2022-11-02 21:01:34,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 300 transitions, 854 flow [2022-11-02 21:01:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:34,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2022-11-02 21:01:34,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6614420062695925 [2022-11-02 21:01:34,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2022-11-02 21:01:34,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2022-11-02 21:01:34,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:34,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2022-11-02 21:01:34,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:34,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:34,767 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:34,768 INFO L175 Difference]: Start difference. First operand has 308 places, 301 transitions, 642 flow. Second operand 6 states and 1266 transitions. [2022-11-02 21:01:34,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 300 transitions, 854 flow [2022-11-02 21:01:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 300 transitions, 844 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:34,774 INFO L231 Difference]: Finished difference. Result has 307 places, 300 transitions, 640 flow [2022-11-02 21:01:34,775 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=640, PETRI_PLACES=307, PETRI_TRANSITIONS=300} [2022-11-02 21:01:34,775 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, -2 predicate places. [2022-11-02 21:01:34,776 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 300 transitions, 640 flow [2022-11-02 21:01:34,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:34,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:34,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:34,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:34,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:01:34,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash 289875646, now seen corresponding path program 1 times [2022-11-02 21:01:34,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:34,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197670609] [2022-11-02 21:01:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:34,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:35,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:35,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737119475] [2022-11-02 21:01:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:35,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:35,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:35,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:35,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:01:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:01:35,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:35,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:35,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:35,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197670609] [2022-11-02 21:01:35,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:35,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737119475] [2022-11-02 21:01:35,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737119475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:35,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:35,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:01:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142842169] [2022-11-02 21:01:35,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:35,681 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-02 21:01:35,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 300 transitions, 640 flow. Second operand has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:35,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-02 21:01:35,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:35,883 INFO L130 PetriNetUnfolder]: 7/781 cut-off events. [2022-11-02 21:01:35,884 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:01:35,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 781 events. 7/781 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 540 event pairs, 0 based on Foata normal form. 4/771 useless extension candidates. Maximal degree in co-relation 351. Up to 13 conditions per place. [2022-11-02 21:01:35,888 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 12 selfloop transitions, 9 changer transitions 0/310 dead transitions. [2022-11-02 21:01:35,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 310 transitions, 704 flow [2022-11-02 21:01:35,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:01:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2723 transitions. [2022-11-02 21:01:35,894 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9484500174155347 [2022-11-02 21:01:35,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2723 transitions. [2022-11-02 21:01:35,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2723 transitions. [2022-11-02 21:01:35,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:35,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2723 transitions. [2022-11-02 21:01:35,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 302.55555555555554) internal successors, (2723), 9 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,909 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,909 INFO L175 Difference]: Start difference. First operand has 307 places, 300 transitions, 640 flow. Second operand 9 states and 2723 transitions. [2022-11-02 21:01:35,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 310 transitions, 704 flow [2022-11-02 21:01:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 310 transitions, 694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 21:01:35,917 INFO L231 Difference]: Finished difference. Result has 313 places, 306 transitions, 680 flow [2022-11-02 21:01:35,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=313, PETRI_TRANSITIONS=306} [2022-11-02 21:01:35,919 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 4 predicate places. [2022-11-02 21:01:35,919 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 306 transitions, 680 flow [2022-11-02 21:01:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:35,921 INFO L208 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] [2022-11-02 21:01:35,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:36,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:36,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:36,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:36,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1138157758, now seen corresponding path program 2 times [2022-11-02 21:01:36,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:36,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942349954] [2022-11-02 21:01:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:36,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:36,204 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:36,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032709825] [2022-11-02 21:01:36,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:36,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:36,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:36,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:01:36,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:01:36,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:36,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:36,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:36,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:36,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:36,667 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:36,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:36,697 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:36,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-02 21:01:36,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942349954] [2022-11-02 21:01:36,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032709825] [2022-11-02 21:01:36,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032709825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:36,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:36,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657656579] [2022-11-02 21:01:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:36,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:36,727 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 319 [2022-11-02 21:01:36,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 306 transitions, 680 flow. Second operand has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:36,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:36,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 319 [2022-11-02 21:01:36,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:38,983 INFO L130 PetriNetUnfolder]: 1693/4839 cut-off events. [2022-11-02 21:01:38,984 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 21:01:39,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8531 conditions, 4839 events. 1693/4839 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 31824 event pairs, 775 based on Foata normal form. 0/4230 useless extension candidates. Maximal degree in co-relation 7869. Up to 2616 conditions per place. [2022-11-02 21:01:39,042 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 236 selfloop transitions, 23 changer transitions 0/442 dead transitions. [2022-11-02 21:01:39,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 442 transitions, 1478 flow [2022-11-02 21:01:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2022-11-02 21:01:39,047 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.690700104493208 [2022-11-02 21:01:39,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1322 transitions. [2022-11-02 21:01:39,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1322 transitions. [2022-11-02 21:01:39,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:39,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1322 transitions. [2022-11-02 21:01:39,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,058 INFO L175 Difference]: Start difference. First operand has 313 places, 306 transitions, 680 flow. Second operand 6 states and 1322 transitions. [2022-11-02 21:01:39,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 442 transitions, 1478 flow [2022-11-02 21:01:39,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 442 transitions, 1472 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 21:01:39,069 INFO L231 Difference]: Finished difference. Result has 322 places, 328 transitions, 832 flow [2022-11-02 21:01:39,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=832, PETRI_PLACES=322, PETRI_TRANSITIONS=328} [2022-11-02 21:01:39,070 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 13 predicate places. [2022-11-02 21:01:39,070 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 328 transitions, 832 flow [2022-11-02 21:01:39,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:39,072 INFO L208 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] [2022-11-02 21:01:39,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:39,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:39,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1322681748, now seen corresponding path program 1 times [2022-11-02 21:01:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:39,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534681885] [2022-11-02 21:01:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:39,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:39,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470964077] [2022-11-02 21:01:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:39,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:39,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:39,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:39,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:01:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:39,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:01:39,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:40,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:40,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:40,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534681885] [2022-11-02 21:01:40,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:40,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470964077] [2022-11-02 21:01:40,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470964077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:40,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:40,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:01:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440052982] [2022-11-02 21:01:40,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:01:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:01:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:40,868 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-02 21:01:40,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 328 transitions, 832 flow. Second operand has 16 states, 16 states have (on average 302.3125) internal successors, (4837), 16 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:40,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:40,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-02 21:01:40,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:41,666 INFO L130 PetriNetUnfolder]: 69/2067 cut-off events. [2022-11-02 21:01:41,667 INFO L131 PetriNetUnfolder]: For 86/89 co-relation queries the response was YES. [2022-11-02 21:01:41,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 2067 events. 69/2067 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4362 event pairs, 8 based on Foata normal form. 8/1999 useless extension candidates. Maximal degree in co-relation 1962. Up to 65 conditions per place. [2022-11-02 21:01:41,676 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 20 selfloop transitions, 21 changer transitions 0/352 dead transitions. [2022-11-02 21:01:41,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 352 transitions, 1014 flow [2022-11-02 21:01:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:01:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:01:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6345 transitions. [2022-11-02 21:01:41,687 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9471562919838782 [2022-11-02 21:01:41,688 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6345 transitions. [2022-11-02 21:01:41,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6345 transitions. [2022-11-02 21:01:41,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:41,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6345 transitions. [2022-11-02 21:01:41,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 302.14285714285717) internal successors, (6345), 21 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,715 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,715 INFO L175 Difference]: Start difference. First operand has 322 places, 328 transitions, 832 flow. Second operand 21 states and 6345 transitions. [2022-11-02 21:01:41,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 352 transitions, 1014 flow [2022-11-02 21:01:41,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 352 transitions, 1014 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:01:41,723 INFO L231 Difference]: Finished difference. Result has 347 places, 341 transitions, 962 flow [2022-11-02 21:01:41,724 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=962, PETRI_PLACES=347, PETRI_TRANSITIONS=341} [2022-11-02 21:01:41,724 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 38 predicate places. [2022-11-02 21:01:41,725 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 341 transitions, 962 flow [2022-11-02 21:01:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 302.3125) internal successors, (4837), 16 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:41,727 INFO L208 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] [2022-11-02 21:01:41,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:41,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:41,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:41,955 INFO L85 PathProgramCache]: Analyzing trace with hash -730691180, now seen corresponding path program 2 times [2022-11-02 21:01:41,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111870761] [2022-11-02 21:01:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:42,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:42,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322789796] [2022-11-02 21:01:42,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:42,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:42,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:42,105 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:42,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:01:42,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:01:42,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:42,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:42,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:42,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:42,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:42,724 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:42,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:42,748 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:42,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 21:01:42,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:42,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111870761] [2022-11-02 21:01:42,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322789796] [2022-11-02 21:01:42,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322789796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:42,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:42,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668642896] [2022-11-02 21:01:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:42,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:42,777 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 319 [2022-11-02 21:01:42,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 341 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:42,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:42,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 319 [2022-11-02 21:01:42,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:46,224 INFO L130 PetriNetUnfolder]: 2504/7515 cut-off events. [2022-11-02 21:01:46,225 INFO L131 PetriNetUnfolder]: For 1351/1359 co-relation queries the response was YES. [2022-11-02 21:01:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14382 conditions, 7515 events. 2504/7515 cut-off events. For 1351/1359 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 49026 event pairs, 904 based on Foata normal form. 0/6666 useless extension candidates. Maximal degree in co-relation 13096. Up to 4000 conditions per place. [2022-11-02 21:01:46,302 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 269 selfloop transitions, 31 changer transitions 0/497 dead transitions. [2022-11-02 21:01:46,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 497 transitions, 2036 flow [2022-11-02 21:01:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:01:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:01:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2022-11-02 21:01:46,306 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6886102403343782 [2022-11-02 21:01:46,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2022-11-02 21:01:46,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2022-11-02 21:01:46,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:46,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2022-11-02 21:01:46,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:46,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:46,313 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:46,314 INFO L175 Difference]: Start difference. First operand has 347 places, 341 transitions, 962 flow. Second operand 6 states and 1318 transitions. [2022-11-02 21:01:46,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 497 transitions, 2036 flow [2022-11-02 21:01:46,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 497 transitions, 2012 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 21:01:46,326 INFO L231 Difference]: Finished difference. Result has 351 places, 371 transitions, 1196 flow [2022-11-02 21:01:46,327 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1196, PETRI_PLACES=351, PETRI_TRANSITIONS=371} [2022-11-02 21:01:46,328 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 42 predicate places. [2022-11-02 21:01:46,328 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 371 transitions, 1196 flow [2022-11-02 21:01:46,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:46,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:46,329 INFO L208 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] [2022-11-02 21:01:46,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:01:46,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1232704904, now seen corresponding path program 1 times [2022-11-02 21:01:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548391821] [2022-11-02 21:01:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:46,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:46,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:46,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242288343] [2022-11-02 21:01:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:46,723 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:46,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:01:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:47,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:01:47,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:48,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:50,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:50,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548391821] [2022-11-02 21:01:50,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:50,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242288343] [2022-11-02 21:01:50,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242288343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:50,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:50,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-02 21:01:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971782087] [2022-11-02 21:01:50,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:01:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:01:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:01:50,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-02 21:01:50,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 371 transitions, 1196 flow. Second operand has 32 states, 32 states have (on average 302.375) internal successors, (9676), 32 states have internal predecessors, (9676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:50,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:50,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-02 21:01:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:52,693 INFO L130 PetriNetUnfolder]: 154/4139 cut-off events. [2022-11-02 21:01:52,694 INFO L131 PetriNetUnfolder]: For 857/868 co-relation queries the response was YES. [2022-11-02 21:01:52,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5390 conditions, 4139 events. 154/4139 cut-off events. For 857/868 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 10092 event pairs, 15 based on Foata normal form. 16/4021 useless extension candidates. Maximal degree in co-relation 3936. Up to 106 conditions per place. [2022-11-02 21:01:52,712 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 36 selfloop transitions, 45 changer transitions 0/422 dead transitions. [2022-11-02 21:01:52,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 422 transitions, 1658 flow [2022-11-02 21:01:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 21:01:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 21:01:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13589 transitions. [2022-11-02 21:01:52,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9466388018112156 [2022-11-02 21:01:52,731 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13589 transitions. [2022-11-02 21:01:52,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13589 transitions. [2022-11-02 21:01:52,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:52,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13589 transitions. [2022-11-02 21:01:52,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 301.97777777777776) internal successors, (13589), 45 states have internal predecessors, (13589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:52,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 319.0) internal successors, (14674), 46 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:52,778 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 319.0) internal successors, (14674), 46 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:52,778 INFO L175 Difference]: Start difference. First operand has 351 places, 371 transitions, 1196 flow. Second operand 45 states and 13589 transitions. [2022-11-02 21:01:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 422 transitions, 1658 flow [2022-11-02 21:01:52,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 422 transitions, 1658 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:01:52,791 INFO L231 Difference]: Finished difference. Result has 404 places, 396 transitions, 1498 flow [2022-11-02 21:01:52,792 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1498, PETRI_PLACES=404, PETRI_TRANSITIONS=396} [2022-11-02 21:01:52,792 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 95 predicate places. [2022-11-02 21:01:52,793 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 396 transitions, 1498 flow [2022-11-02 21:01:52,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 302.375) internal successors, (9676), 32 states have internal predecessors, (9676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:52,796 INFO L208 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] [2022-11-02 21:01:52,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:01:53,011 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:01:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:53,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1096049272, now seen corresponding path program 2 times [2022-11-02 21:01:53,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:53,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746999098] [2022-11-02 21:01:53,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:53,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:53,245 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:01:53,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057350588] [2022-11-02 21:01:53,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:53,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:01:53,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:53,247 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:01:53,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:01:54,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:01:54,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:54,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:54,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:54,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:54,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:54,255 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:54,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:54,285 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:01:54,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:01:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-02 21:01:54,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:54,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:54,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746999098] [2022-11-02 21:01:54,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:01:54,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057350588] [2022-11-02 21:01:54,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057350588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:54,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:54,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361565507] [2022-11-02 21:01:54,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:54,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:54,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:54,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:54,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:54,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-02 21:01:54,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 396 transitions, 1498 flow. Second operand has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:54,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:54,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-02 21:01:54,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:01,229 INFO L130 PetriNetUnfolder]: 2016/8405 cut-off events. [2022-11-02 21:02:01,230 INFO L131 PetriNetUnfolder]: For 3340/3348 co-relation queries the response was YES. [2022-11-02 21:02:01,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16600 conditions, 8405 events. 2016/8405 cut-off events. For 3340/3348 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 45426 event pairs, 810 based on Foata normal form. 0/7834 useless extension candidates. Maximal degree in co-relation 14069. Up to 4169 conditions per place. [2022-11-02 21:02:01,290 INFO L137 encePairwiseOnDemand]: 308/319 looper letters, 253 selfloop transitions, 55 changer transitions 0/546 dead transitions. [2022-11-02 21:02:01,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 546 transitions, 2738 flow [2022-11-02 21:02:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:02:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:02:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1367 transitions. [2022-11-02 21:02:01,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7142110762800418 [2022-11-02 21:02:01,294 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1367 transitions. [2022-11-02 21:02:01,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1367 transitions. [2022-11-02 21:02:01,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:01,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1367 transitions. [2022-11-02 21:02:01,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.83333333333334) internal successors, (1367), 6 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,301 INFO L175 Difference]: Start difference. First operand has 404 places, 396 transitions, 1498 flow. Second operand 6 states and 1367 transitions. [2022-11-02 21:02:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 546 transitions, 2738 flow [2022-11-02 21:02:01,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 546 transitions, 2682 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-02 21:02:01,326 INFO L231 Difference]: Finished difference. Result has 396 places, 445 transitions, 1996 flow [2022-11-02 21:02:01,326 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1996, PETRI_PLACES=396, PETRI_TRANSITIONS=445} [2022-11-02 21:02:01,327 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 87 predicate places. [2022-11-02 21:02:01,327 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 445 transitions, 1996 flow [2022-11-02 21:02:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:01,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:01,329 INFO L208 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] [2022-11-02 21:02:01,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-02 21:02:01,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:02:01,555 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:02:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -950300322, now seen corresponding path program 1 times [2022-11-02 21:02:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:01,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996368195] [2022-11-02 21:02:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:01,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:02:01,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998010120] [2022-11-02 21:02:01,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:01,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:01,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:01,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:02:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:03,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 21:02:03,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:06,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:09,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996368195] [2022-11-02 21:02:09,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:02:09,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998010120] [2022-11-02 21:02:09,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998010120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:09,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:09,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-02 21:02:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485523782] [2022-11-02 21:02:09,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:09,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 21:02:09,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 21:02:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:02:09,709 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-02 21:02:09,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 445 transitions, 1996 flow. Second operand has 61 states, 61 states have (on average 302.4918032786885) internal successors, (18452), 61 states have internal predecessors, (18452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:09,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-02 21:02:09,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:17,815 INFO L130 PetriNetUnfolder]: 263/7339 cut-off events. [2022-11-02 21:02:17,815 INFO L131 PetriNetUnfolder]: For 5489/5547 co-relation queries the response was YES. [2022-11-02 21:02:17,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10258 conditions, 7339 events. 263/7339 cut-off events. For 5489/5547 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14140 event pairs, 10 based on Foata normal form. 47/7214 useless extension candidates. Maximal degree in co-relation 8463. Up to 197 conditions per place. [2022-11-02 21:02:17,851 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 66 selfloop transitions, 90 changer transitions 0/546 dead transitions. [2022-11-02 21:02:17,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 546 transitions, 3082 flow [2022-11-02 21:02:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-02 21:02:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-02 21:02:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 27171 transitions. [2022-11-02 21:02:17,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9463949843260188 [2022-11-02 21:02:17,960 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 27171 transitions. [2022-11-02 21:02:17,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 27171 transitions. [2022-11-02 21:02:17,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:17,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 27171 transitions. [2022-11-02 21:02:18,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 301.9) internal successors, (27171), 90 states have internal predecessors, (27171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 319.0) internal successors, (29029), 91 states have internal predecessors, (29029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,040 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 319.0) internal successors, (29029), 91 states have internal predecessors, (29029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,040 INFO L175 Difference]: Start difference. First operand has 396 places, 445 transitions, 1996 flow. Second operand 90 states and 27171 transitions. [2022-11-02 21:02:18,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 546 transitions, 3082 flow [2022-11-02 21:02:18,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 546 transitions, 3082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:02:18,068 INFO L231 Difference]: Finished difference. Result has 501 places, 491 transitions, 2650 flow [2022-11-02 21:02:18,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2650, PETRI_PLACES=501, PETRI_TRANSITIONS=491} [2022-11-02 21:02:18,070 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 192 predicate places. [2022-11-02 21:02:18,070 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 491 transitions, 2650 flow [2022-11-02 21:02:18,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 302.4918032786885) internal successors, (18452), 61 states have internal predecessors, (18452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:18,074 INFO L208 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] [2022-11-02 21:02:18,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:18,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:02:18,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:02:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash 477334670, now seen corresponding path program 2 times [2022-11-02 21:02:18,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:18,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429327711] [2022-11-02 21:02:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:18,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:02:18,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093534858] [2022-11-02 21:02:18,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:02:18,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:18,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:18,772 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:18,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:02:20,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:02:20,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:02:20,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:02:20,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:20,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:02:20,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:02:20,710 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:02:20,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:02:20,737 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:02:20,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:02:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-02 21:02:20,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429327711] [2022-11-02 21:02:20,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:02:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093534858] [2022-11-02 21:02:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093534858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:20,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:20,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727057915] [2022-11-02 21:02:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:20,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:02:20,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:20,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:02:20,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:02:20,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-02 21:02:20,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 491 transitions, 2650 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:20,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:20,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-02 21:02:20,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:36,884 INFO L130 PetriNetUnfolder]: 2129/11356 cut-off events. [2022-11-02 21:02:36,884 INFO L131 PetriNetUnfolder]: For 7926/7950 co-relation queries the response was YES. [2022-11-02 21:02:36,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23759 conditions, 11356 events. 2129/11356 cut-off events. For 7926/7950 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 46977 event pairs, 758 based on Foata normal form. 3/10876 useless extension candidates. Maximal degree in co-relation 18809. Up to 5538 conditions per place. [2022-11-02 21:02:37,016 INFO L137 encePairwiseOnDemand]: 308/319 looper letters, 306 selfloop transitions, 79 changer transitions 0/669 dead transitions. [2022-11-02 21:02:37,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 669 transitions, 4408 flow [2022-11-02 21:02:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:02:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 21:02:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2022-11-02 21:02:37,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2022-11-02 21:02:37,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2022-11-02 21:02:37,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2022-11-02 21:02:37,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:37,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2022-11-02 21:02:37,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,031 INFO L175 Difference]: Start difference. First operand has 501 places, 491 transitions, 2650 flow. Second operand 6 states and 1363 transitions. [2022-11-02 21:02:37,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 669 transitions, 4408 flow [2022-11-02 21:02:37,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 669 transitions, 4290 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-02 21:02:37,103 INFO L231 Difference]: Finished difference. Result has 469 places, 556 transitions, 3430 flow [2022-11-02 21:02:37,103 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3430, PETRI_PLACES=469, PETRI_TRANSITIONS=556} [2022-11-02 21:02:37,104 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 160 predicate places. [2022-11-02 21:02:37,104 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 556 transitions, 3430 flow [2022-11-02 21:02:37,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:37,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:37,106 INFO L208 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] [2022-11-02 21:02:37,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:37,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 21:02:37,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:02:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 460129341, now seen corresponding path program 1 times [2022-11-02 21:02:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:37,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499100047] [2022-11-02 21:02:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:37,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:37,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:02:37,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955037518] [2022-11-02 21:02:37,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:37,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:37,863 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:37,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:02:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:41,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 11395 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 21:02:47,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 21:02:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:53,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499100047] [2022-11-02 21:02:53,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:02:53,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955037518] [2022-11-02 21:02:53,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955037518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:53,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:53,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:02:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020790026] [2022-11-02 21:02:53,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:53,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:02:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:02:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:53,520 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 319 [2022-11-02 21:02:53,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 556 transitions, 3430 flow. Second operand has 8 states, 8 states have (on average 299.75) internal successors, (2398), 8 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:53,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 319 [2022-11-02 21:02:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:08,887 INFO L130 PetriNetUnfolder]: 377/10488 cut-off events. [2022-11-02 21:03:08,887 INFO L131 PetriNetUnfolder]: For 7016/7176 co-relation queries the response was YES. [2022-11-02 21:03:08,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15369 conditions, 10488 events. 377/10488 cut-off events. For 7016/7176 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16907 event pairs, 11 based on Foata normal form. 59/10387 useless extension candidates. Maximal degree in co-relation 12193. Up to 248 conditions per place. [2022-11-02 21:03:08,939 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 21 selfloop transitions, 9 changer transitions 0/572 dead transitions. [2022-11-02 21:03:08,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 572 transitions, 3524 flow [2022-11-02 21:03:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:03:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2705 transitions. [2022-11-02 21:03:08,942 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9421804249390456 [2022-11-02 21:03:08,943 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2705 transitions. [2022-11-02 21:03:08,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2705 transitions. [2022-11-02 21:03:08,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:08,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2705 transitions. [2022-11-02 21:03:08,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.55555555555554) internal successors, (2705), 9 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:08,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:08,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:08,952 INFO L175 Difference]: Start difference. First operand has 469 places, 556 transitions, 3430 flow. Second operand 9 states and 2705 transitions. [2022-11-02 21:03:08,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 572 transitions, 3524 flow [2022-11-02 21:03:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 572 transitions, 3524 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:09,020 INFO L231 Difference]: Finished difference. Result has 480 places, 562 transitions, 3480 flow [2022-11-02 21:03:09,021 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3480, PETRI_PLACES=480, PETRI_TRANSITIONS=562} [2022-11-02 21:03:09,021 INFO L287 CegarLoopForPetriNet]: 309 programPoint places, 171 predicate places. [2022-11-02 21:03:09,021 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 562 transitions, 3480 flow [2022-11-02 21:03:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.75) internal successors, (2398), 8 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:09,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:09,024 INFO L208 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] [2022-11-02 21:03:09,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:09,235 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-02 21:03:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1403845935, now seen corresponding path program 2 times [2022-11-02 21:03:09,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:09,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94092897] [2022-11-02 21:03:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:10,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 21:03:10,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532127294] [2022-11-02 21:03:10,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:03:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:10,535 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:10,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94c3aa14-e001-4a0d-a2c5-c3e0dd36ceeb/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:03:14,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:03:14,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:03:14,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:03:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:15,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:03:15,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:03:15,409 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:03:15,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:03:15,434 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 21:03:15,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 21:03:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-02 21:03:15,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:15,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:15,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94092897] [2022-11-02 21:03:15,484 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 21:03:15,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532127294] [2022-11-02 21:03:15,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532127294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:15,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:15,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959034123] [2022-11-02 21:03:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:15,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:03:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:15,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:03:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:03:15,492 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 319 [2022-11-02 21:03:15,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 562 transitions, 3480 flow. Second operand has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:15,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:15,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 319 [2022-11-02 21:03:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand