./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa --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 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:35:04,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:35:04,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:35:04,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:35:04,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:35:04,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:35:04,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:35:04,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:35:04,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:35:04,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:35:04,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:35:04,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:35:04,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:35:04,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:35:04,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:35:04,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:35:04,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:35:04,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:35:04,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:35:04,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:35:04,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:35:04,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:35:04,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:35:04,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:35:04,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:35:04,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:35:04,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:35:04,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:35:04,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:35:04,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:35:04,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:35:04,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:35:04,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:35:04,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:35:04,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:35:04,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:35:04,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:35:04,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:35:04,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:35:04,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:35:04,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:35:04,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-12-07 00:35:04,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:35:04,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:35:04,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:35:04,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:35:04,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:35:04,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:35:04,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:35:04,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:35:04,504 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:35:04,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:35:04,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:35:04,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:35:04,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:04,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:35:04,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:35:04,508 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_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e [2021-12-07 00:35:04,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:35:04,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:35:04,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:35:04,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:35:04,698 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:35:04,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2021-12-07 00:35:04,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/data/2e5b21f78/a40a9bd03c60487290e33ed19b4af00c/FLAG892a54da5 [2021-12-07 00:35:05,174 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:35:05,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2021-12-07 00:35:05,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/data/2e5b21f78/a40a9bd03c60487290e33ed19b4af00c/FLAG892a54da5 [2021-12-07 00:35:05,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/data/2e5b21f78/a40a9bd03c60487290e33ed19b4af00c [2021-12-07 00:35:05,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:35:05,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:35:05,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:05,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:35:05,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:35:05,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d8730e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05, skipping insertion in model container [2021-12-07 00:35:05,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:35:05,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:35:05,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:05,581 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:35:05,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:05,652 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:35:05,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05 WrapperNode [2021-12-07 00:35:05,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:05,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:05,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:35:05,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:35:05,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,696 INFO L137 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2021-12-07 00:35:05,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:05,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:35:05,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:35:05,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:35:05,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:35:05,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:35:05,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:35:05,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:35:05,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (1/1) ... [2021-12-07 00:35:05,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:05,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:05,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:35:05,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-07 00:35:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-07 00:35:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:35:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:35:05,790 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-07 00:35:05,873 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:35:05,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:35:06,079 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:35:06,087 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:35:06,087 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-07 00:35:06,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:06 BoogieIcfgContainer [2021-12-07 00:35:06,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:35:06,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:35:06,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:35:06,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:35:06,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:35:05" (1/3) ... [2021-12-07 00:35:06,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dfa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:06, skipping insertion in model container [2021-12-07 00:35:06,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:05" (2/3) ... [2021-12-07 00:35:06,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259dfa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:06, skipping insertion in model container [2021-12-07 00:35:06,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:06" (3/3) ... [2021-12-07 00:35:06,097 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2021-12-07 00:35:06,102 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-07 00:35:06,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:35:06,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-07 00:35:06,103 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,126 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,127 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,128 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,129 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,130 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,131 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,132 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,133 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,134 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,135 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,135 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,135 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,136 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,137 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,138 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,139 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,140 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,145 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,145 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,145 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,146 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,147 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,149 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post34#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet30#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~post32#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~nondet33#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#in~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_#t~mem31#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,150 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,151 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,151 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,151 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-07 00:35:06,152 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-07 00:35:06,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:35:06,193 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:35:06,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-07 00:35:06,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 261 flow [2021-12-07 00:35:06,238 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2021-12-07 00:35:06,238 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 00:35:06,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 232 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2021-12-07 00:35:06,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 261 flow [2021-12-07 00:35:06,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2021-12-07 00:35:06,257 INFO L129 PetriNetUnfolder]: 4/63 cut-off events. [2021-12-07 00:35:06,257 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 00:35:06,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:06,258 INFO L254 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] [2021-12-07 00:35:06,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash -88358338, now seen corresponding path program 1 times [2021-12-07 00:35:06,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:06,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258894598] [2021-12-07 00:35:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:06,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:06,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:06,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258894598] [2021-12-07 00:35:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258894598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:06,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:06,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:35:06,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287759057] [2021-12-07 00:35:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:06,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:35:06,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:35:06,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:35:06,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 128 [2021-12-07 00:35:06,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 257 flow. Second operand has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:06,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 128 [2021-12-07 00:35:06,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:06,453 INFO L129 PetriNetUnfolder]: 3/124 cut-off events. [2021-12-07 00:35:06,453 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 00:35:06,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 124 events. 3/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 227 event pairs, 0 based on Foata normal form. 3/118 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2021-12-07 00:35:06,456 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 1 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2021-12-07 00:35:06,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 124 transitions, 253 flow [2021-12-07 00:35:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:35:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-07 00:35:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2021-12-07 00:35:06,465 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.984375 [2021-12-07 00:35:06,466 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2021-12-07 00:35:06,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2021-12-07 00:35:06,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:06,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2021-12-07 00:35:06,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,476 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,478 INFO L186 Difference]: Start difference. First operand has 125 places, 127 transitions, 257 flow. Second operand 2 states and 252 transitions. [2021-12-07 00:35:06,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 124 transitions, 253 flow [2021-12-07 00:35:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 124 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 00:35:06,485 INFO L242 Difference]: Finished difference. Result has 125 places, 124 transitions, 250 flow [2021-12-07 00:35:06,486 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=125, PETRI_TRANSITIONS=124} [2021-12-07 00:35:06,489 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2021-12-07 00:35:06,489 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 124 transitions, 250 flow [2021-12-07 00:35:06,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,490 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:06,490 INFO L254 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] [2021-12-07 00:35:06,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:35:06,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:06,491 INFO L85 PathProgramCache]: Analyzing trace with hash -932830209, now seen corresponding path program 1 times [2021-12-07 00:35:06,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:06,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722551676] [2021-12-07 00:35:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:06,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:06,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722551676] [2021-12-07 00:35:06,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722551676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:06,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:06,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:35:06,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217307591] [2021-12-07 00:35:06,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:06,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:35:06,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:35:06,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:35:06,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 128 [2021-12-07 00:35:06,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 124 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:06,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 128 [2021-12-07 00:35:06,544 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:06,574 INFO L129 PetriNetUnfolder]: 3/128 cut-off events. [2021-12-07 00:35:06,574 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-07 00:35:06,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 3/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2021-12-07 00:35:06,576 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 10 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2021-12-07 00:35:06,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 282 flow [2021-12-07 00:35:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:35:06,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:35:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2021-12-07 00:35:06,579 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9479166666666666 [2021-12-07 00:35:06,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2021-12-07 00:35:06,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2021-12-07 00:35:06,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:06,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2021-12-07 00:35:06,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,590 INFO L186 Difference]: Start difference. First operand has 125 places, 124 transitions, 250 flow. Second operand 3 states and 364 transitions. [2021-12-07 00:35:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 282 flow [2021-12-07 00:35:06,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 00:35:06,593 INFO L242 Difference]: Finished difference. Result has 128 places, 125 transitions, 262 flow [2021-12-07 00:35:06,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2021-12-07 00:35:06,594 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 3 predicate places. [2021-12-07 00:35:06,595 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 262 flow [2021-12-07 00:35:06,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:06,595 INFO L254 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] [2021-12-07 00:35:06,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:35:06,595 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash 527090186, now seen corresponding path program 1 times [2021-12-07 00:35:06,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451128421] [2021-12-07 00:35:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:06,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:06,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451128421] [2021-12-07 00:35:06,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451128421] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607493746] [2021-12-07 00:35:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:06,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:06,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:06,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:35:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:35:06,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:35:06,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:06,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607493746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:06,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:06,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-07 00:35:06,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586916577] [2021-12-07 00:35:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:06,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:35:06,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:06,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:35:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:35:06,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2021-12-07 00:35:06,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:06,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2021-12-07 00:35:06,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:06,810 INFO L129 PetriNetUnfolder]: 3/158 cut-off events. [2021-12-07 00:35:06,810 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 00:35:06,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 158 events. 3/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 162 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 178. Up to 10 conditions per place. [2021-12-07 00:35:06,812 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 11 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2021-12-07 00:35:06,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 296 flow [2021-12-07 00:35:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:35:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-07 00:35:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2021-12-07 00:35:06,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9427083333333334 [2021-12-07 00:35:06,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2021-12-07 00:35:06,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2021-12-07 00:35:06,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:06,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2021-12-07 00:35:06,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,817 INFO L186 Difference]: Start difference. First operand has 128 places, 125 transitions, 262 flow. Second operand 3 states and 362 transitions. [2021-12-07 00:35:06,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 296 flow [2021-12-07 00:35:06,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 00:35:06,821 INFO L242 Difference]: Finished difference. Result has 130 places, 126 transitions, 272 flow [2021-12-07 00:35:06,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2021-12-07 00:35:06,822 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2021-12-07 00:35:06,822 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 272 flow [2021-12-07 00:35:06,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:06,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:06,822 INFO L254 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] [2021-12-07 00:35:06,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:07,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:07,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash 18470129, now seen corresponding path program 1 times [2021-12-07 00:35:07,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:07,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751055513] [2021-12-07 00:35:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:07,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:07,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:07,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751055513] [2021-12-07 00:35:07,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751055513] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:07,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143991619] [2021-12-07 00:35:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:07,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:07,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:35:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:35:07,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:07,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:07,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143991619] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:35:07,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:35:07,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-07 00:35:07,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556562578] [2021-12-07 00:35:07,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:07,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:07,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:07,369 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2021-12-07 00:35:07,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:07,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:07,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2021-12-07 00:35:07,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:07,447 INFO L129 PetriNetUnfolder]: 3/165 cut-off events. [2021-12-07 00:35:07,448 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-07 00:35:07,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 165 events. 3/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 197. Up to 6 conditions per place. [2021-12-07 00:35:07,449 INFO L132 encePairwiseOnDemand]: 122/128 looper letters, 11 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2021-12-07 00:35:07,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 334 flow [2021-12-07 00:35:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-07 00:35:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2021-12-07 00:35:07,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9253472222222222 [2021-12-07 00:35:07,453 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2021-12-07 00:35:07,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2021-12-07 00:35:07,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:07,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2021-12-07 00:35:07,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:07,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 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) [2021-12-07 00:35:07,461 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 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) [2021-12-07 00:35:07,461 INFO L186 Difference]: Start difference. First operand has 130 places, 126 transitions, 272 flow. Second operand 9 states and 1066 transitions. [2021-12-07 00:35:07,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 334 flow [2021-12-07 00:35:07,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 136 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 00:35:07,465 INFO L242 Difference]: Finished difference. Result has 140 places, 132 transitions, 320 flow [2021-12-07 00:35:07,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2021-12-07 00:35:07,466 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 15 predicate places. [2021-12-07 00:35:07,466 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 320 flow [2021-12-07 00:35:07,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:07,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:07,467 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-07 00:35:07,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:07,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:07,668 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash 697598481, now seen corresponding path program 2 times [2021-12-07 00:35:07,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:07,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133101037] [2021-12-07 00:35:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:07,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:07,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133101037] [2021-12-07 00:35:07,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133101037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071921453] [2021-12-07 00:35:07,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:35:07,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:07,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:07,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:35:07,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:35:07,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:07,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:35:07,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:07,867 INFO L388 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 [2021-12-07 00:35:07,888 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-07 00:35:07,888 INFO L388 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 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-07 00:35:07,918 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-07 00:35:07,919 INFO L388 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 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-07 00:35:07,956 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-07 00:35:07,956 INFO L388 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 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-07 00:35:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:35:07,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:07,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071921453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:07,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:07,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-12-07 00:35:07,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665781518] [2021-12-07 00:35:07,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:07,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:35:07,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:35:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:07,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 128 [2021-12-07 00:35:07,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:07,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:07,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 128 [2021-12-07 00:35:07,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:08,493 INFO L129 PetriNetUnfolder]: 871/2799 cut-off events. [2021-12-07 00:35:08,494 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-07 00:35:08,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 2799 events. 871/2799 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20286 event pairs, 424 based on Foata normal form. 0/2561 useless extension candidates. Maximal degree in co-relation 4608. Up to 1332 conditions per place. [2021-12-07 00:35:08,512 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 107 selfloop transitions, 38 changer transitions 0/234 dead transitions. [2021-12-07 00:35:08,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 234 transitions, 814 flow [2021-12-07 00:35:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:35:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 00:35:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 638 transitions. [2021-12-07 00:35:08,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8307291666666666 [2021-12-07 00:35:08,514 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 638 transitions. [2021-12-07 00:35:08,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 638 transitions. [2021-12-07 00:35:08,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:08,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 638 transitions. [2021-12-07 00:35:08,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.33333333333333) internal successors, (638), 6 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:08,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:08,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:08,519 INFO L186 Difference]: Start difference. First operand has 140 places, 132 transitions, 320 flow. Second operand 6 states and 638 transitions. [2021-12-07 00:35:08,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 234 transitions, 814 flow [2021-12-07 00:35:08,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 234 transitions, 808 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-07 00:35:08,524 INFO L242 Difference]: Finished difference. Result has 149 places, 169 transitions, 568 flow [2021-12-07 00:35:08,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=149, PETRI_TRANSITIONS=169} [2021-12-07 00:35:08,525 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 24 predicate places. [2021-12-07 00:35:08,525 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 169 transitions, 568 flow [2021-12-07 00:35:08,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:08,525 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:08,526 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-07 00:35:08,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:08,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:08,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -198306197, now seen corresponding path program 1 times [2021-12-07 00:35:08,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:08,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920218483] [2021-12-07 00:35:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:08,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:08,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:08,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920218483] [2021-12-07 00:35:08,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920218483] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:08,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623802915] [2021-12-07 00:35:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:08,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:08,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:08,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:08,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:35:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:35:08,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:09,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:09,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623802915] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:35:09,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:35:09,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-07 00:35:09,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886000244] [2021-12-07 00:35:09,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:09,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 00:35:09,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 00:35:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:35:09,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2021-12-07 00:35:09,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 169 transitions, 568 flow. Second operand has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:09,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:09,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2021-12-07 00:35:09,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:09,311 INFO L129 PetriNetUnfolder]: 126/861 cut-off events. [2021-12-07 00:35:09,311 INFO L130 PetriNetUnfolder]: For 115/132 co-relation queries the response was YES. [2021-12-07 00:35:09,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 861 events. 126/861 cut-off events. For 115/132 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5093 event pairs, 17 based on Foata normal form. 4/819 useless extension candidates. Maximal degree in co-relation 1389. Up to 153 conditions per place. [2021-12-07 00:35:09,317 INFO L132 encePairwiseOnDemand]: 122/128 looper letters, 19 selfloop transitions, 21 changer transitions 0/193 dead transitions. [2021-12-07 00:35:09,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 193 transitions, 748 flow [2021-12-07 00:35:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:35:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-07 00:35:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2480 transitions. [2021-12-07 00:35:09,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9226190476190477 [2021-12-07 00:35:09,323 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2480 transitions. [2021-12-07 00:35:09,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2480 transitions. [2021-12-07 00:35:09,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:09,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2480 transitions. [2021-12-07 00:35:09,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.0952380952381) internal successors, (2480), 21 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:09,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:09,336 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:09,336 INFO L186 Difference]: Start difference. First operand has 149 places, 169 transitions, 568 flow. Second operand 21 states and 2480 transitions. [2021-12-07 00:35:09,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 193 transitions, 748 flow [2021-12-07 00:35:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 193 transitions, 748 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-07 00:35:09,343 INFO L242 Difference]: Finished difference. Result has 174 places, 182 transitions, 698 flow [2021-12-07 00:35:09,343 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=698, PETRI_PLACES=174, PETRI_TRANSITIONS=182} [2021-12-07 00:35:09,344 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 49 predicate places. [2021-12-07 00:35:09,344 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 182 transitions, 698 flow [2021-12-07 00:35:09,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:09,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:09,345 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-07 00:35:09,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:35:09,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 00:35:09,546 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1911834453, now seen corresponding path program 2 times [2021-12-07 00:35:09,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:09,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476423481] [2021-12-07 00:35:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:09,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:09,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476423481] [2021-12-07 00:35:09,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476423481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545796259] [2021-12-07 00:35:09,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:35:09,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:09,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:09,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:35:09,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:35:09,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:09,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 00:35:09,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:09,924 INFO L388 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 [2021-12-07 00:35:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:09,944 INFO L388 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 [2021-12-07 00:35:09,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:09,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:09,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:09,976 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:35:09,976 INFO L388 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 [2021-12-07 00:35:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:10,011 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:35:10,012 INFO L388 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 [2021-12-07 00:35:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-07 00:35:10,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:10,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545796259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:10,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:10,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2021-12-07 00:35:10,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982162883] [2021-12-07 00:35:10,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:10,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:10,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:35:10,044 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2021-12-07 00:35:10,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 182 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:10,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:10,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2021-12-07 00:35:10,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:10,890 INFO L129 PetriNetUnfolder]: 1541/4204 cut-off events. [2021-12-07 00:35:10,891 INFO L130 PetriNetUnfolder]: For 1819/1835 co-relation queries the response was YES. [2021-12-07 00:35:10,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 4204 events. 1541/4204 cut-off events. For 1819/1835 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 27984 event pairs, 471 based on Foata normal form. 0/3926 useless extension candidates. Maximal degree in co-relation 9298. Up to 1524 conditions per place. [2021-12-07 00:35:10,919 INFO L132 encePairwiseOnDemand]: 111/128 looper letters, 272 selfloop transitions, 33 changer transitions 0/391 dead transitions. [2021-12-07 00:35:10,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 391 transitions, 2130 flow [2021-12-07 00:35:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:35:10,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-07 00:35:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1022 transitions. [2021-12-07 00:35:10,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6653645833333334 [2021-12-07 00:35:10,923 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1022 transitions. [2021-12-07 00:35:10,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1022 transitions. [2021-12-07 00:35:10,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:10,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1022 transitions. [2021-12-07 00:35:10,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 85.16666666666667) internal successors, (1022), 12 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:10,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:10,931 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:10,931 INFO L186 Difference]: Start difference. First operand has 174 places, 182 transitions, 698 flow. Second operand 12 states and 1022 transitions. [2021-12-07 00:35:10,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 391 transitions, 2130 flow [2021-12-07 00:35:10,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 391 transitions, 2106 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-12-07 00:35:10,948 INFO L242 Difference]: Finished difference. Result has 186 places, 212 transitions, 952 flow [2021-12-07 00:35:10,948 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=952, PETRI_PLACES=186, PETRI_TRANSITIONS=212} [2021-12-07 00:35:10,949 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 61 predicate places. [2021-12-07 00:35:10,949 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 212 transitions, 952 flow [2021-12-07 00:35:10,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:10,950 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:10,950 INFO L254 CegarLoopForPetriNet]: trace histogram [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] [2021-12-07 00:35:10,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:35:11,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:11,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash 157483862, now seen corresponding path program 1 times [2021-12-07 00:35:11,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:11,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123698240] [2021-12-07 00:35:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:11,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:11,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:11,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123698240] [2021-12-07 00:35:11,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123698240] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:11,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67572810] [2021-12-07 00:35:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:11,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:11,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:11,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:11,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:35:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:35:11,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:11,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:11,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67572810] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:35:11,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:35:11,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2021-12-07 00:35:11,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206799057] [2021-12-07 00:35:11,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:11,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 00:35:11,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 00:35:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:35:11,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2021-12-07 00:35:11,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 212 transitions, 952 flow. Second operand has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:11,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2021-12-07 00:35:11,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:11,915 INFO L129 PetriNetUnfolder]: 240/1759 cut-off events. [2021-12-07 00:35:11,915 INFO L130 PetriNetUnfolder]: For 977/1013 co-relation queries the response was YES. [2021-12-07 00:35:11,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 1759 events. 240/1759 cut-off events. For 977/1013 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 12338 event pairs, 21 based on Foata normal form. 3/1680 useless extension candidates. Maximal degree in co-relation 3220. Up to 277 conditions per place. [2021-12-07 00:35:11,928 INFO L132 encePairwiseOnDemand]: 122/128 looper letters, 25 selfloop transitions, 30 changer transitions 0/238 dead transitions. [2021-12-07 00:35:11,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 238 transitions, 1202 flow [2021-12-07 00:35:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-07 00:35:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-07 00:35:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3538 transitions. [2021-12-07 00:35:11,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9213541666666667 [2021-12-07 00:35:11,936 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3538 transitions. [2021-12-07 00:35:11,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3538 transitions. [2021-12-07 00:35:11,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:11,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3538 transitions. [2021-12-07 00:35:11,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 117.93333333333334) internal successors, (3538), 30 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,951 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,951 INFO L186 Difference]: Start difference. First operand has 186 places, 212 transitions, 952 flow. Second operand 30 states and 3538 transitions. [2021-12-07 00:35:11,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 238 transitions, 1202 flow [2021-12-07 00:35:11,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 238 transitions, 1199 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-07 00:35:11,959 INFO L242 Difference]: Finished difference. Result has 217 places, 222 transitions, 1101 flow [2021-12-07 00:35:11,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1101, PETRI_PLACES=217, PETRI_TRANSITIONS=222} [2021-12-07 00:35:11,960 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 92 predicate places. [2021-12-07 00:35:11,960 INFO L470 AbstractCegarLoop]: Abstraction has has 217 places, 222 transitions, 1101 flow [2021-12-07 00:35:11,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:11,961 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:11,961 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:11,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:35:12,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,163 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash 360970443, now seen corresponding path program 2 times [2021-12-07 00:35:12,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:12,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21401131] [2021-12-07 00:35:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:12,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:12,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:12,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21401131] [2021-12-07 00:35:12,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21401131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:12,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:12,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:35:12,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542778702] [2021-12-07 00:35:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:12,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:35:12,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:35:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:35:12,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2021-12-07 00:35:12,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 1101 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:12,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:12,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2021-12-07 00:35:12,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:13,392 INFO L129 PetriNetUnfolder]: 1649/5502 cut-off events. [2021-12-07 00:35:13,392 INFO L130 PetriNetUnfolder]: For 3952/3999 co-relation queries the response was YES. [2021-12-07 00:35:13,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 5502 events. 1649/5502 cut-off events. For 3952/3999 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 42828 event pairs, 639 based on Foata normal form. 31/5227 useless extension candidates. Maximal degree in co-relation 12816. Up to 2847 conditions per place. [2021-12-07 00:35:13,426 INFO L132 encePairwiseOnDemand]: 105/128 looper letters, 134 selfloop transitions, 89 changer transitions 4/341 dead transitions. [2021-12-07 00:35:13,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 341 transitions, 2017 flow [2021-12-07 00:35:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:35:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 00:35:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 627 transitions. [2021-12-07 00:35:13,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.81640625 [2021-12-07 00:35:13,429 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 627 transitions. [2021-12-07 00:35:13,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 627 transitions. [2021-12-07 00:35:13,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:13,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 627 transitions. [2021-12-07 00:35:13,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:13,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:13,432 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:13,432 INFO L186 Difference]: Start difference. First operand has 217 places, 222 transitions, 1101 flow. Second operand 6 states and 627 transitions. [2021-12-07 00:35:13,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 341 transitions, 2017 flow [2021-12-07 00:35:13,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 341 transitions, 1971 flow, removed 5 selfloop flow, removed 18 redundant places. [2021-12-07 00:35:13,443 INFO L242 Difference]: Finished difference. Result has 209 places, 305 transitions, 1829 flow [2021-12-07 00:35:13,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1829, PETRI_PLACES=209, PETRI_TRANSITIONS=305} [2021-12-07 00:35:13,444 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 84 predicate places. [2021-12-07 00:35:13,444 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 305 transitions, 1829 flow [2021-12-07 00:35:13,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:13,444 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:13,445 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:13,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:35:13,445 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:13,445 INFO L85 PathProgramCache]: Analyzing trace with hash 26007824, now seen corresponding path program 1 times [2021-12-07 00:35:13,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:13,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701807410] [2021-12-07 00:35:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:13,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:13,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:13,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701807410] [2021-12-07 00:35:13,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701807410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:13,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:13,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:35:13,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296506663] [2021-12-07 00:35:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:13,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:35:13,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:13,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:35:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:35:13,521 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2021-12-07 00:35:13,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 305 transitions, 1829 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:13,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:13,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2021-12-07 00:35:13,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:14,333 INFO L129 PetriNetUnfolder]: 1626/5295 cut-off events. [2021-12-07 00:35:14,333 INFO L130 PetriNetUnfolder]: For 9689/9772 co-relation queries the response was YES. [2021-12-07 00:35:14,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15709 conditions, 5295 events. 1626/5295 cut-off events. For 9689/9772 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 40593 event pairs, 438 based on Foata normal form. 0/5094 useless extension candidates. Maximal degree in co-relation 15675. Up to 2955 conditions per place. [2021-12-07 00:35:14,368 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 192 selfloop transitions, 71 changer transitions 0/376 dead transitions. [2021-12-07 00:35:14,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 376 transitions, 2887 flow [2021-12-07 00:35:14,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:35:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-07 00:35:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2021-12-07 00:35:14,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.75390625 [2021-12-07 00:35:14,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 579 transitions. [2021-12-07 00:35:14,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 579 transitions. [2021-12-07 00:35:14,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:14,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 579 transitions. [2021-12-07 00:35:14,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:14,373 INFO L186 Difference]: Start difference. First operand has 209 places, 305 transitions, 1829 flow. Second operand 6 states and 579 transitions. [2021-12-07 00:35:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 376 transitions, 2887 flow [2021-12-07 00:35:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 376 transitions, 2755 flow, removed 66 selfloop flow, removed 0 redundant places. [2021-12-07 00:35:14,395 INFO L242 Difference]: Finished difference. Result has 219 places, 358 transitions, 2479 flow [2021-12-07 00:35:14,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2479, PETRI_PLACES=219, PETRI_TRANSITIONS=358} [2021-12-07 00:35:14,396 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 94 predicate places. [2021-12-07 00:35:14,396 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 358 transitions, 2479 flow [2021-12-07 00:35:14,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:14,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:14,396 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:14,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:35:14,396 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:14,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1752093046, now seen corresponding path program 1 times [2021-12-07 00:35:14,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:14,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711434666] [2021-12-07 00:35:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:14,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:14,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711434666] [2021-12-07 00:35:14,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711434666] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022661490] [2021-12-07 00:35:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:14,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:14,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:14,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:35:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:14,731 INFO L388 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 [2021-12-07 00:35:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:14,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022661490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:14,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:14,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:35:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469730760] [2021-12-07 00:35:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:14,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:14,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:35:14,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:14,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 358 transitions, 2479 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:14,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:14,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:14,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:18,584 INFO L129 PetriNetUnfolder]: 7680/19969 cut-off events. [2021-12-07 00:35:18,585 INFO L130 PetriNetUnfolder]: For 43070/43072 co-relation queries the response was YES. [2021-12-07 00:35:18,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62569 conditions, 19969 events. 7680/19969 cut-off events. For 43070/43072 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 177451 event pairs, 1963 based on Foata normal form. 13/19335 useless extension candidates. Maximal degree in co-relation 62530. Up to 6383 conditions per place. [2021-12-07 00:35:18,734 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 991 selfloop transitions, 16 changer transitions 8/1100 dead transitions. [2021-12-07 00:35:18,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1100 transitions, 9658 flow [2021-12-07 00:35:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:35:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-07 00:35:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1043 transitions. [2021-12-07 00:35:18,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6790364583333334 [2021-12-07 00:35:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1043 transitions. [2021-12-07 00:35:18,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1043 transitions. [2021-12-07 00:35:18,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:18,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1043 transitions. [2021-12-07 00:35:18,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.91666666666667) internal successors, (1043), 12 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:18,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:18,742 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:18,742 INFO L186 Difference]: Start difference. First operand has 219 places, 358 transitions, 2479 flow. Second operand 12 states and 1043 transitions. [2021-12-07 00:35:18,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1100 transitions, 9658 flow [2021-12-07 00:35:18,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1100 transitions, 9148 flow, removed 255 selfloop flow, removed 0 redundant places. [2021-12-07 00:35:18,862 INFO L242 Difference]: Finished difference. Result has 238 places, 373 transitions, 2433 flow [2021-12-07 00:35:18,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2433, PETRI_PLACES=238, PETRI_TRANSITIONS=373} [2021-12-07 00:35:18,863 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 113 predicate places. [2021-12-07 00:35:18,863 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 373 transitions, 2433 flow [2021-12-07 00:35:18,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:18,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:18,864 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:18,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:35:19,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-07 00:35:19,065 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1985203314, now seen corresponding path program 2 times [2021-12-07 00:35:19,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950874420] [2021-12-07 00:35:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:19,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:19,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950874420] [2021-12-07 00:35:19,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950874420] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180521782] [2021-12-07 00:35:19,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:35:19,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:19,391 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:19,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:35:19,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:35:19,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:19,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:19,600 INFO L388 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 [2021-12-07 00:35:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:19,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:19,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180521782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:19,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:19,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:35:19,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846949408] [2021-12-07 00:35:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:19,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:19,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:35:19,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:19,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 373 transitions, 2433 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:19,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:19,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:19,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:24,001 INFO L129 PetriNetUnfolder]: 8367/21827 cut-off events. [2021-12-07 00:35:24,002 INFO L130 PetriNetUnfolder]: For 49449/49455 co-relation queries the response was YES. [2021-12-07 00:35:24,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71212 conditions, 21827 events. 8367/21827 cut-off events. For 49449/49455 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 195863 event pairs, 2414 based on Foata normal form. 17/21385 useless extension candidates. Maximal degree in co-relation 71164. Up to 7933 conditions per place. [2021-12-07 00:35:24,254 INFO L132 encePairwiseOnDemand]: 115/128 looper letters, 864 selfloop transitions, 21 changer transitions 0/970 dead transitions. [2021-12-07 00:35:24,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 970 transitions, 8347 flow [2021-12-07 00:35:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:35:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-07 00:35:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 966 transitions. [2021-12-07 00:35:24,256 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.62890625 [2021-12-07 00:35:24,256 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 966 transitions. [2021-12-07 00:35:24,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 966 transitions. [2021-12-07 00:35:24,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:24,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 966 transitions. [2021-12-07 00:35:24,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.5) internal successors, (966), 12 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:24,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:24,261 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:24,262 INFO L186 Difference]: Start difference. First operand has 238 places, 373 transitions, 2433 flow. Second operand 12 states and 966 transitions. [2021-12-07 00:35:24,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 970 transitions, 8347 flow [2021-12-07 00:35:24,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 970 transitions, 8346 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-07 00:35:24,368 INFO L242 Difference]: Finished difference. Result has 253 places, 385 transitions, 2576 flow [2021-12-07 00:35:24,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2576, PETRI_PLACES=253, PETRI_TRANSITIONS=385} [2021-12-07 00:35:24,369 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 128 predicate places. [2021-12-07 00:35:24,369 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 385 transitions, 2576 flow [2021-12-07 00:35:24,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:24,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:24,370 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:24,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:35:24,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:24,572 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash 940376937, now seen corresponding path program 1 times [2021-12-07 00:35:24,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:24,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338825335] [2021-12-07 00:35:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:24,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:24,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:24,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338825335] [2021-12-07 00:35:24,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338825335] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:24,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593277732] [2021-12-07 00:35:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:24,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:24,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:24,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:24,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:35:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:25,071 INFO L388 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 [2021-12-07 00:35:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:25,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:25,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593277732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:25,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:25,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:35:25,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869147131] [2021-12-07 00:35:25,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:25,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:25,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:25,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:35:25,147 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:25,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 385 transitions, 2576 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:25,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:25,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:25,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:30,055 INFO L129 PetriNetUnfolder]: 9283/24015 cut-off events. [2021-12-07 00:35:30,055 INFO L130 PetriNetUnfolder]: For 59177/59196 co-relation queries the response was YES. [2021-12-07 00:35:30,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81386 conditions, 24015 events. 9283/24015 cut-off events. For 59177/59196 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 219740 event pairs, 2825 based on Foata normal form. 21/23566 useless extension candidates. Maximal degree in co-relation 81333. Up to 7504 conditions per place. [2021-12-07 00:35:30,308 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1078 selfloop transitions, 29 changer transitions 8/1200 dead transitions. [2021-12-07 00:35:30,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1200 transitions, 10566 flow [2021-12-07 00:35:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:35:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-07 00:35:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1205 transitions. [2021-12-07 00:35:30,311 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6724330357142857 [2021-12-07 00:35:30,311 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1205 transitions. [2021-12-07 00:35:30,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1205 transitions. [2021-12-07 00:35:30,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:30,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1205 transitions. [2021-12-07 00:35:30,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.07142857142857) internal successors, (1205), 14 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:30,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:30,316 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:30,316 INFO L186 Difference]: Start difference. First operand has 253 places, 385 transitions, 2576 flow. Second operand 14 states and 1205 transitions. [2021-12-07 00:35:30,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1200 transitions, 10566 flow [2021-12-07 00:35:30,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1200 transitions, 10478 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-12-07 00:35:30,465 INFO L242 Difference]: Finished difference. Result has 270 places, 403 transitions, 2825 flow [2021-12-07 00:35:30,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2825, PETRI_PLACES=270, PETRI_TRANSITIONS=403} [2021-12-07 00:35:30,465 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 145 predicate places. [2021-12-07 00:35:30,466 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 403 transitions, 2825 flow [2021-12-07 00:35:30,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:30,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:30,466 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:30,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:35:30,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 00:35:30,668 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash 110844952, now seen corresponding path program 3 times [2021-12-07 00:35:30,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113595969] [2021-12-07 00:35:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:30,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:30,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113595969] [2021-12-07 00:35:30,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113595969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925814364] [2021-12-07 00:35:30,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:35:30,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:30,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:30,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:35:30,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:35:30,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:30,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:30,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:31,028 INFO L388 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 [2021-12-07 00:35:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:31,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:31,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925814364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:31,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:31,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:35:31,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391032595] [2021-12-07 00:35:31,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:31,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:35:31,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:31,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 403 transitions, 2825 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:31,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:31,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:31,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:37,241 INFO L129 PetriNetUnfolder]: 11047/28775 cut-off events. [2021-12-07 00:35:37,241 INFO L130 PetriNetUnfolder]: For 81841/81877 co-relation queries the response was YES. [2021-12-07 00:35:37,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99749 conditions, 28775 events. 11047/28775 cut-off events. For 81841/81877 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 271404 event pairs, 3111 based on Foata normal form. 28/28195 useless extension candidates. Maximal degree in co-relation 99687. Up to 7979 conditions per place. [2021-12-07 00:35:37,704 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1051 selfloop transitions, 38 changer transitions 0/1174 dead transitions. [2021-12-07 00:35:37,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1174 transitions, 10609 flow [2021-12-07 00:35:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:35:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-07 00:35:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1160 transitions. [2021-12-07 00:35:37,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6473214285714286 [2021-12-07 00:35:37,705 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1160 transitions. [2021-12-07 00:35:37,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1160 transitions. [2021-12-07 00:35:37,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:37,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1160 transitions. [2021-12-07 00:35:37,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.85714285714286) internal successors, (1160), 14 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:37,708 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:37,709 INFO L186 Difference]: Start difference. First operand has 270 places, 403 transitions, 2825 flow. Second operand 14 states and 1160 transitions. [2021-12-07 00:35:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1174 transitions, 10609 flow [2021-12-07 00:35:37,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1174 transitions, 10496 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-12-07 00:35:37,875 INFO L242 Difference]: Finished difference. Result has 286 places, 421 transitions, 3106 flow [2021-12-07 00:35:37,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3106, PETRI_PLACES=286, PETRI_TRANSITIONS=421} [2021-12-07 00:35:37,876 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 161 predicate places. [2021-12-07 00:35:37,876 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 421 transitions, 3106 flow [2021-12-07 00:35:37,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:37,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:37,876 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:37,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:38,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-07 00:35:38,078 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:38,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1716423809, now seen corresponding path program 2 times [2021-12-07 00:35:38,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:38,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433992892] [2021-12-07 00:35:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:38,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433992892] [2021-12-07 00:35:38,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433992892] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546952541] [2021-12-07 00:35:38,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:35:38,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:38,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:38,222 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:35:38,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:35:38,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:38,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:38,432 INFO L388 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 [2021-12-07 00:35:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:38,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:38,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546952541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:38,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:38,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:35:38,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927641406] [2021-12-07 00:35:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:38,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:38,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:35:38,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:38,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 421 transitions, 3106 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:38,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:38,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:38,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:45,550 INFO L129 PetriNetUnfolder]: 12020/31118 cut-off events. [2021-12-07 00:35:45,550 INFO L130 PetriNetUnfolder]: For 100769/100822 co-relation queries the response was YES. [2021-12-07 00:35:45,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111508 conditions, 31118 events. 12020/31118 cut-off events. For 100769/100822 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 299445 event pairs, 3715 based on Foata normal form. 33/30541 useless extension candidates. Maximal degree in co-relation 111437. Up to 11216 conditions per place. [2021-12-07 00:35:45,992 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1215 selfloop transitions, 41 changer transitions 4/1345 dead transitions. [2021-12-07 00:35:45,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1345 transitions, 12762 flow [2021-12-07 00:35:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:35:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-07 00:35:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1192 transitions. [2021-12-07 00:35:45,994 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6651785714285714 [2021-12-07 00:35:45,994 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1192 transitions. [2021-12-07 00:35:45,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1192 transitions. [2021-12-07 00:35:45,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:45,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1192 transitions. [2021-12-07 00:35:45,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.14285714285714) internal successors, (1192), 14 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:45,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:45,998 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:45,998 INFO L186 Difference]: Start difference. First operand has 286 places, 421 transitions, 3106 flow. Second operand 14 states and 1192 transitions. [2021-12-07 00:35:45,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1345 transitions, 12762 flow [2021-12-07 00:35:46,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1345 transitions, 12638 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-12-07 00:35:46,286 INFO L242 Difference]: Finished difference. Result has 300 places, 442 transitions, 3506 flow [2021-12-07 00:35:46,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3506, PETRI_PLACES=300, PETRI_TRANSITIONS=442} [2021-12-07 00:35:46,287 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 175 predicate places. [2021-12-07 00:35:46,287 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 442 transitions, 3506 flow [2021-12-07 00:35:46,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:46,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:46,288 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:46,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:35:46,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 00:35:46,489 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash -980941646, now seen corresponding path program 4 times [2021-12-07 00:35:46,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685770095] [2021-12-07 00:35:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:46,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:46,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:46,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685770095] [2021-12-07 00:35:46,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685770095] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:46,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236448241] [2021-12-07 00:35:46,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:35:46,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:46,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:46,604 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:46,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:35:46,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:35:46,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:46,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:35:46,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:46,784 INFO L388 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 [2021-12-07 00:35:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:46,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:46,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236448241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:46,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:46,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2021-12-07 00:35:46,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402435809] [2021-12-07 00:35:46,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:46,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:35:46,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:46,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:35:46,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:46,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:46,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 442 transitions, 3506 flow. Second operand has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:46,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:46,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:46,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:35:55,724 INFO L129 PetriNetUnfolder]: 15059/38936 cut-off events. [2021-12-07 00:35:55,724 INFO L130 PetriNetUnfolder]: For 140093/140187 co-relation queries the response was YES. [2021-12-07 00:35:56,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141834 conditions, 38936 events. 15059/38936 cut-off events. For 140093/140187 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 386034 event pairs, 2362 based on Foata normal form. 75/38146 useless extension candidates. Maximal degree in co-relation 141756. Up to 6662 conditions per place. [2021-12-07 00:35:56,388 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1846 selfloop transitions, 122 changer transitions 4/2057 dead transitions. [2021-12-07 00:35:56,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 2057 transitions, 19235 flow [2021-12-07 00:35:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 00:35:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-07 00:35:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1952 transitions. [2021-12-07 00:35:56,392 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2021-12-07 00:35:56,392 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1952 transitions. [2021-12-07 00:35:56,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1952 transitions. [2021-12-07 00:35:56,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:35:56,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1952 transitions. [2021-12-07 00:35:56,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.8695652173913) internal successors, (1952), 23 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:56,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 128.0) internal successors, (3072), 24 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:56,398 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 128.0) internal successors, (3072), 24 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:56,398 INFO L186 Difference]: Start difference. First operand has 300 places, 442 transitions, 3506 flow. Second operand 23 states and 1952 transitions. [2021-12-07 00:35:56,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 2057 transitions, 19235 flow [2021-12-07 00:35:56,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 2057 transitions, 19048 flow, removed 66 selfloop flow, removed 5 redundant places. [2021-12-07 00:35:56,875 INFO L242 Difference]: Finished difference. Result has 331 places, 513 transitions, 4650 flow [2021-12-07 00:35:56,875 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4650, PETRI_PLACES=331, PETRI_TRANSITIONS=513} [2021-12-07 00:35:56,876 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 206 predicate places. [2021-12-07 00:35:56,876 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 513 transitions, 4650 flow [2021-12-07 00:35:56,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:56,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:35:56,876 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:56,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:57,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:35:57,078 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:35:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1130980227, now seen corresponding path program 3 times [2021-12-07 00:35:57,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:57,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170130360] [2021-12-07 00:35:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:57,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:57,443 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:35:57,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:57,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170130360] [2021-12-07 00:35:57,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170130360] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:57,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639022833] [2021-12-07 00:35:57,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:35:57,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:57,445 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:57,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:35:57,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:35:57,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:35:57,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:35:57,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:57,773 INFO L388 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 [2021-12-07 00:35:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:35:57,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639022833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:57,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:57,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2021-12-07 00:35:57,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162464314] [2021-12-07 00:35:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:57,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:57,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:35:57,819 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:35:57,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 513 transitions, 4650 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:57,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:35:57,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:35:57,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:36:09,460 INFO L129 PetriNetUnfolder]: 17554/45513 cut-off events. [2021-12-07 00:36:09,460 INFO L130 PetriNetUnfolder]: For 189609/189718 co-relation queries the response was YES. [2021-12-07 00:36:10,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171737 conditions, 45513 events. 17554/45513 cut-off events. For 189609/189718 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 467935 event pairs, 6633 based on Foata normal form. 51/44566 useless extension candidates. Maximal degree in co-relation 171646. Up to 15384 conditions per place. [2021-12-07 00:36:10,195 INFO L132 encePairwiseOnDemand]: 112/128 looper letters, 1583 selfloop transitions, 99 changer transitions 19/1786 dead transitions. [2021-12-07 00:36:10,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1786 transitions, 18008 flow [2021-12-07 00:36:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:36:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-07 00:36:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2056 transitions. [2021-12-07 00:36:10,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5949074074074074 [2021-12-07 00:36:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2056 transitions. [2021-12-07 00:36:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2056 transitions. [2021-12-07 00:36:10,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:36:10,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2056 transitions. [2021-12-07 00:36:10,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 76.14814814814815) internal successors, (2056), 27 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:10,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:10,206 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:10,206 INFO L186 Difference]: Start difference. First operand has 331 places, 513 transitions, 4650 flow. Second operand 27 states and 2056 transitions. [2021-12-07 00:36:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1786 transitions, 18008 flow [2021-12-07 00:36:10,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1786 transitions, 17523 flow, removed 206 selfloop flow, removed 4 redundant places. [2021-12-07 00:36:10,969 INFO L242 Difference]: Finished difference. Result has 377 places, 584 transitions, 5703 flow [2021-12-07 00:36:10,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5703, PETRI_PLACES=377, PETRI_TRANSITIONS=584} [2021-12-07 00:36:10,970 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 252 predicate places. [2021-12-07 00:36:10,970 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 584 transitions, 5703 flow [2021-12-07 00:36:10,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:10,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:36:10,970 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:10,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:36:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:11,172 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:36:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 949631044, now seen corresponding path program 5 times [2021-12-07 00:36:11,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:11,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434281838] [2021-12-07 00:36:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:11,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:36:11,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434281838] [2021-12-07 00:36:11,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434281838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318871487] [2021-12-07 00:36:11,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:36:11,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:11,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:11,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:36:11,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-07 00:36:11,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:36:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:36:11,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:11,662 INFO L388 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 [2021-12-07 00:36:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:36:11,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:36:11,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318871487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:11,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:11,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:36:11,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883871096] [2021-12-07 00:36:11,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:11,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:36:11,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:36:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:36:11,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:36:11,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 584 transitions, 5703 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:11,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:36:11,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:36:11,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:36:28,779 INFO L129 PetriNetUnfolder]: 22280/58837 cut-off events. [2021-12-07 00:36:28,780 INFO L130 PetriNetUnfolder]: For 263234/263383 co-relation queries the response was YES. [2021-12-07 00:36:29,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222475 conditions, 58837 events. 22280/58837 cut-off events. For 263234/263383 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 646085 event pairs, 8393 based on Foata normal form. 64/57562 useless extension candidates. Maximal degree in co-relation 222360. Up to 21368 conditions per place. [2021-12-07 00:36:30,028 INFO L132 encePairwiseOnDemand]: 112/128 looper letters, 1965 selfloop transitions, 125 changer transitions 21/2196 dead transitions. [2021-12-07 00:36:30,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 2196 transitions, 22562 flow [2021-12-07 00:36:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-07 00:36:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-07 00:36:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2315 transitions. [2021-12-07 00:36:30,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6236530172413793 [2021-12-07 00:36:30,032 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2315 transitions. [2021-12-07 00:36:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2315 transitions. [2021-12-07 00:36:30,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:36:30,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2315 transitions. [2021-12-07 00:36:30,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 79.82758620689656) internal successors, (2315), 29 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:30,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 128.0) internal successors, (3840), 30 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:30,040 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 128.0) internal successors, (3840), 30 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:30,040 INFO L186 Difference]: Start difference. First operand has 377 places, 584 transitions, 5703 flow. Second operand 29 states and 2315 transitions. [2021-12-07 00:36:30,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 2196 transitions, 22562 flow [2021-12-07 00:36:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2196 transitions, 22295 flow, removed 133 selfloop flow, removed 1 redundant places. [2021-12-07 00:36:31,295 INFO L242 Difference]: Finished difference. Result has 427 places, 659 transitions, 7132 flow [2021-12-07 00:36:31,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7132, PETRI_PLACES=427, PETRI_TRANSITIONS=659} [2021-12-07 00:36:31,295 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 302 predicate places. [2021-12-07 00:36:31,295 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 659 transitions, 7132 flow [2021-12-07 00:36:31,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:31,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:36:31,296 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:31,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-07 00:36:31,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:36:31,497 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:36:31,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 792896349, now seen corresponding path program 4 times [2021-12-07 00:36:31,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:31,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619815868] [2021-12-07 00:36:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:31,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:36:31,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619815868] [2021-12-07 00:36:31,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619815868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783322781] [2021-12-07 00:36:31,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:36:31,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:31,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:31,616 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:31,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:36:31,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:36:31,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:36:31,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:36:31,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:31,817 INFO L388 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 [2021-12-07 00:36:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:36:31,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:36:31,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783322781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:31,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:31,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2021-12-07 00:36:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916452027] [2021-12-07 00:36:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:31,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:36:31,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:31,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:36:31,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:36:31,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:36:31,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 659 transitions, 7132 flow. Second operand has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:31,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:36:31,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:36:31,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:36:54,026 INFO L129 PetriNetUnfolder]: 27758/72694 cut-off events. [2021-12-07 00:36:54,027 INFO L130 PetriNetUnfolder]: For 371736/372014 co-relation queries the response was YES. [2021-12-07 00:36:55,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 281481 conditions, 72694 events. 27758/72694 cut-off events. For 371736/372014 co-relation queries the response was YES. Maximal size of possible extension queue 1246. Compared 832528 event pairs, 5372 based on Foata normal form. 180/71048 useless extension candidates. Maximal degree in co-relation 281343. Up to 12458 conditions per place. [2021-12-07 00:36:56,091 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 2534 selfloop transitions, 223 changer transitions 4/2846 dead transitions. [2021-12-07 00:36:56,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 2846 transitions, 29452 flow [2021-12-07 00:36:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:36:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-07 00:36:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2338 transitions. [2021-12-07 00:36:56,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6765046296296297 [2021-12-07 00:36:56,095 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2338 transitions. [2021-12-07 00:36:56,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2338 transitions. [2021-12-07 00:36:56,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:36:56,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2338 transitions. [2021-12-07 00:36:56,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.5925925925926) internal successors, (2338), 27 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:56,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:56,102 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:56,102 INFO L186 Difference]: Start difference. First operand has 427 places, 659 transitions, 7132 flow. Second operand 27 states and 2338 transitions. [2021-12-07 00:36:56,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 2846 transitions, 29452 flow [2021-12-07 00:36:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 2846 transitions, 28997 flow, removed 227 selfloop flow, removed 1 redundant places. [2021-12-07 00:36:58,633 INFO L242 Difference]: Finished difference. Result has 467 places, 733 transitions, 8616 flow [2021-12-07 00:36:58,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=6699, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8616, PETRI_PLACES=467, PETRI_TRANSITIONS=733} [2021-12-07 00:36:58,634 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 342 predicate places. [2021-12-07 00:36:58,634 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 733 transitions, 8616 flow [2021-12-07 00:36:58,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:58,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:36:58,635 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:58,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-07 00:36:58,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:58,836 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:36:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2005025094, now seen corresponding path program 6 times [2021-12-07 00:36:58,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:58,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537533568] [2021-12-07 00:36:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:58,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:36:59,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:59,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537533568] [2021-12-07 00:36:59,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537533568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:59,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869092893] [2021-12-07 00:36:59,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:36:59,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:59,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:36:59,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-07 00:36:59,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:36:59,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:36:59,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:59,241 INFO L388 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 [2021-12-07 00:36:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:36:59,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:36:59,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869092893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:59,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:59,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:36:59,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810002476] [2021-12-07 00:36:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:59,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:36:59,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:59,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:36:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:36:59,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:36:59,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 733 transitions, 8616 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:59,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:36:59,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:36:59,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:37:23,727 INFO L129 PetriNetUnfolder]: 28854/76450 cut-off events. [2021-12-07 00:37:23,727 INFO L130 PetriNetUnfolder]: For 433438/433651 co-relation queries the response was YES. [2021-12-07 00:37:25,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297997 conditions, 76450 events. 28854/76450 cut-off events. For 433438/433651 co-relation queries the response was YES. Maximal size of possible extension queue 1350. Compared 889755 event pairs, 11397 based on Foata normal form. 67/74582 useless extension candidates. Maximal degree in co-relation 297844. Up to 31895 conditions per place. [2021-12-07 00:37:26,001 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1648 selfloop transitions, 119 changer transitions 2/1854 dead transitions. [2021-12-07 00:37:26,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1854 transitions, 21404 flow [2021-12-07 00:37:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 00:37:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-07 00:37:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1451 transitions. [2021-12-07 00:37:26,003 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6297743055555556 [2021-12-07 00:37:26,004 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1451 transitions. [2021-12-07 00:37:26,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1451 transitions. [2021-12-07 00:37:26,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:37:26,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1451 transitions. [2021-12-07 00:37:26,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 80.61111111111111) internal successors, (1451), 18 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:26,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:26,009 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:26,009 INFO L186 Difference]: Start difference. First operand has 467 places, 733 transitions, 8616 flow. Second operand 18 states and 1451 transitions. [2021-12-07 00:37:26,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1854 transitions, 21404 flow [2021-12-07 00:37:29,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1854 transitions, 20914 flow, removed 239 selfloop flow, removed 1 redundant places. [2021-12-07 00:37:29,297 INFO L242 Difference]: Finished difference. Result has 495 places, 759 transitions, 9118 flow [2021-12-07 00:37:29,298 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=8162, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9118, PETRI_PLACES=495, PETRI_TRANSITIONS=759} [2021-12-07 00:37:29,298 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 370 predicate places. [2021-12-07 00:37:29,298 INFO L470 AbstractCegarLoop]: Abstraction has has 495 places, 759 transitions, 9118 flow [2021-12-07 00:37:29,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:29,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:37:29,299 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:29,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 00:37:29,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:29,500 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:37:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1700611882, now seen corresponding path program 7 times [2021-12-07 00:37:29,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:29,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184198458] [2021-12-07 00:37:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:29,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:37:29,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184198458] [2021-12-07 00:37:29,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184198458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791365371] [2021-12-07 00:37:29,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:37:29,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:29,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:29,670 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 00:37:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:29,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:37:29,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:29,901 INFO L388 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 [2021-12-07 00:37:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:37:29,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:37:29,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791365371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:29,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:37:29,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:37:29,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976960735] [2021-12-07 00:37:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:29,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:37:29,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:37:29,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:37:29,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:37:29,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 759 transitions, 9118 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:29,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:37:29,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:37:29,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:37:55,834 INFO L129 PetriNetUnfolder]: 28916/76467 cut-off events. [2021-12-07 00:37:55,834 INFO L130 PetriNetUnfolder]: For 452565/452784 co-relation queries the response was YES. [2021-12-07 00:37:58,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299070 conditions, 76467 events. 28916/76467 cut-off events. For 452565/452784 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 889148 event pairs, 11186 based on Foata normal form. 77/74593 useless extension candidates. Maximal degree in co-relation 298905. Up to 32037 conditions per place. [2021-12-07 00:37:58,369 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 1882 selfloop transitions, 113 changer transitions 7/2087 dead transitions. [2021-12-07 00:37:58,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 2087 transitions, 23412 flow [2021-12-07 00:37:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:37:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-07 00:37:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1631 transitions. [2021-12-07 00:37:58,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.670641447368421 [2021-12-07 00:37:58,372 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1631 transitions. [2021-12-07 00:37:58,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1631 transitions. [2021-12-07 00:37:58,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:37:58,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1631 transitions. [2021-12-07 00:37:58,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 85.84210526315789) internal successors, (1631), 19 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:58,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:58,377 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:58,377 INFO L186 Difference]: Start difference. First operand has 495 places, 759 transitions, 9118 flow. Second operand 19 states and 1631 transitions. [2021-12-07 00:37:58,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 2087 transitions, 23412 flow [2021-12-07 00:38:01,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 2087 transitions, 23011 flow, removed 192 selfloop flow, removed 2 redundant places. [2021-12-07 00:38:01,895 INFO L242 Difference]: Finished difference. Result has 518 places, 770 transitions, 9316 flow [2021-12-07 00:38:01,896 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=8851, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9316, PETRI_PLACES=518, PETRI_TRANSITIONS=770} [2021-12-07 00:38:01,897 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 393 predicate places. [2021-12-07 00:38:01,897 INFO L470 AbstractCegarLoop]: Abstraction has has 518 places, 770 transitions, 9316 flow [2021-12-07 00:38:01,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:01,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:38:01,897 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:01,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-07 00:38:02,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:02,099 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:38:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash 129388072, now seen corresponding path program 8 times [2021-12-07 00:38:02,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:02,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597007062] [2021-12-07 00:38:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:02,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:38:02,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:02,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597007062] [2021-12-07 00:38:02,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597007062] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314089786] [2021-12-07 00:38:02,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:02,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:02,285 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:02,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 00:38:02,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:38:02,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:02,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:38:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:02,515 INFO L388 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 [2021-12-07 00:38:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:38:02,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:02,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314089786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:02,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:38:02,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:38:02,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13691914] [2021-12-07 00:38:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:02,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:38:02,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:38:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:38:02,548 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:38:02,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 770 transitions, 9316 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:02,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:38:02,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:38:02,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:38:30,713 INFO L129 PetriNetUnfolder]: 30818/81499 cut-off events. [2021-12-07 00:38:30,713 INFO L130 PetriNetUnfolder]: For 482176/482406 co-relation queries the response was YES. [2021-12-07 00:38:33,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320423 conditions, 81499 events. 30818/81499 cut-off events. For 482176/482406 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 961112 event pairs, 11686 based on Foata normal form. 107/79543 useless extension candidates. Maximal degree in co-relation 320251. Up to 32001 conditions per place. [2021-12-07 00:38:33,505 INFO L132 encePairwiseOnDemand]: 112/128 looper letters, 1958 selfloop transitions, 155 changer transitions 23/2221 dead transitions. [2021-12-07 00:38:33,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 2221 transitions, 25116 flow [2021-12-07 00:38:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-07 00:38:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-07 00:38:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2183 transitions. [2021-12-07 00:38:33,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6090959821428571 [2021-12-07 00:38:33,508 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2183 transitions. [2021-12-07 00:38:33,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2183 transitions. [2021-12-07 00:38:33,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:38:33,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2183 transitions. [2021-12-07 00:38:33,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 77.96428571428571) internal successors, (2183), 28 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:33,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 128.0) internal successors, (3712), 29 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:33,515 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 128.0) internal successors, (3712), 29 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:33,515 INFO L186 Difference]: Start difference. First operand has 518 places, 770 transitions, 9316 flow. Second operand 28 states and 2183 transitions. [2021-12-07 00:38:33,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 2221 transitions, 25116 flow [2021-12-07 00:38:37,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 2221 transitions, 24780 flow, removed 63 selfloop flow, removed 10 redundant places. [2021-12-07 00:38:37,345 INFO L242 Difference]: Finished difference. Result has 548 places, 814 transitions, 10337 flow [2021-12-07 00:38:37,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9071, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=10337, PETRI_PLACES=548, PETRI_TRANSITIONS=814} [2021-12-07 00:38:37,346 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 423 predicate places. [2021-12-07 00:38:37,346 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 814 transitions, 10337 flow [2021-12-07 00:38:37,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:37,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:38:37,346 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:37,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:37,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:37,548 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:38:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -744467842, now seen corresponding path program 9 times [2021-12-07 00:38:37,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:37,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930205927] [2021-12-07 00:38:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:37,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:38:37,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:37,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930205927] [2021-12-07 00:38:37,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930205927] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:37,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612773101] [2021-12-07 00:38:37,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:38:37,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:37,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:37,747 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:37,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 00:38:37,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:38:37,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:38:37,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:38,000 INFO L388 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 [2021-12-07 00:38:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:38:38,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:38,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612773101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:38,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:38:38,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:38:38,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826422577] [2021-12-07 00:38:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:38,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:38:38,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:38:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:38:38,033 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:38:38,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 814 transitions, 10337 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:38,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:38:38,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:38:38,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:39:07,677 INFO L129 PetriNetUnfolder]: 30957/81480 cut-off events. [2021-12-07 00:39:07,677 INFO L130 PetriNetUnfolder]: For 476252/476502 co-relation queries the response was YES. [2021-12-07 00:39:10,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 322026 conditions, 81480 events. 30957/81480 cut-off events. For 476252/476502 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 960016 event pairs, 11570 based on Foata normal form. 116/79562 useless extension candidates. Maximal degree in co-relation 321841. Up to 32958 conditions per place. [2021-12-07 00:39:10,789 INFO L132 encePairwiseOnDemand]: 112/128 looper letters, 1957 selfloop transitions, 167 changer transitions 43/2252 dead transitions. [2021-12-07 00:39:10,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 2252 transitions, 25361 flow [2021-12-07 00:39:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:39:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-07 00:39:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2470 transitions. [2021-12-07 00:39:10,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6224798387096774 [2021-12-07 00:39:10,792 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2470 transitions. [2021-12-07 00:39:10,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2470 transitions. [2021-12-07 00:39:10,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:39:10,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2470 transitions. [2021-12-07 00:39:10,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 79.6774193548387) internal successors, (2470), 31 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:10,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 128.0) internal successors, (4096), 32 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:10,800 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 128.0) internal successors, (4096), 32 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:10,800 INFO L186 Difference]: Start difference. First operand has 548 places, 814 transitions, 10337 flow. Second operand 31 states and 2470 transitions. [2021-12-07 00:39:10,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 2252 transitions, 25361 flow [2021-12-07 00:39:14,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 2252 transitions, 25030 flow, removed 95 selfloop flow, removed 9 redundant places. [2021-12-07 00:39:14,542 INFO L242 Difference]: Finished difference. Result has 578 places, 837 transitions, 10942 flow [2021-12-07 00:39:14,543 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=9979, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=10942, PETRI_PLACES=578, PETRI_TRANSITIONS=837} [2021-12-07 00:39:14,543 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 453 predicate places. [2021-12-07 00:39:14,543 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 837 transitions, 10942 flow [2021-12-07 00:39:14,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:14,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:39:14,543 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:39:14,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:39:14,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-07 00:39:14,745 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:39:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash 749850426, now seen corresponding path program 10 times [2021-12-07 00:39:14,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:14,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762312182] [2021-12-07 00:39:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:14,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:39:14,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:14,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762312182] [2021-12-07 00:39:14,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762312182] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:14,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142996543] [2021-12-07 00:39:14,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:39:14,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:14,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:14,947 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:14,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 00:39:15,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:39:15,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:39:15,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:39:15,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:15,162 INFO L388 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 [2021-12-07 00:39:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:39:15,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:39:15,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142996543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:15,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:39:15,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2021-12-07 00:39:15,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967413660] [2021-12-07 00:39:15,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:15,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:39:15,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:39:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:39:15,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:39:15,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 837 transitions, 10942 flow. Second operand has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:15,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:39:15,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:39:15,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:39:45,854 INFO L129 PetriNetUnfolder]: 30971/80668 cut-off events. [2021-12-07 00:39:45,854 INFO L130 PetriNetUnfolder]: For 495383/495639 co-relation queries the response was YES. [2021-12-07 00:39:48,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324616 conditions, 80668 events. 30971/80668 cut-off events. For 495383/495639 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 943139 event pairs, 6292 based on Foata normal form. 181/78794 useless extension candidates. Maximal degree in co-relation 324422. Up to 16371 conditions per place. [2021-12-07 00:39:49,245 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1712 selfloop transitions, 306 changer transitions 0/2103 dead transitions. [2021-12-07 00:39:49,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 2103 transitions, 25020 flow [2021-12-07 00:39:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:39:49,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-07 00:39:49,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1564 transitions. [2021-12-07 00:39:49,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6430921052631579 [2021-12-07 00:39:49,248 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1564 transitions. [2021-12-07 00:39:49,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1564 transitions. [2021-12-07 00:39:49,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:39:49,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1564 transitions. [2021-12-07 00:39:49,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.3157894736842) internal successors, (1564), 19 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:49,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:49,253 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 128.0) internal successors, (2560), 20 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:49,253 INFO L186 Difference]: Start difference. First operand has 578 places, 837 transitions, 10942 flow. Second operand 19 states and 1564 transitions. [2021-12-07 00:39:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 2103 transitions, 25020 flow [2021-12-07 00:39:53,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 2103 transitions, 24480 flow, removed 112 selfloop flow, removed 29 redundant places. [2021-12-07 00:39:53,254 INFO L242 Difference]: Finished difference. Result has 575 places, 868 transitions, 12081 flow [2021-12-07 00:39:53,255 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=10413, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12081, PETRI_PLACES=575, PETRI_TRANSITIONS=868} [2021-12-07 00:39:53,255 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 450 predicate places. [2021-12-07 00:39:53,255 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 868 transitions, 12081 flow [2021-12-07 00:39:53,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:53,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:39:53,256 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:39:53,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 00:39:53,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:53,457 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:39:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1710503622, now seen corresponding path program 11 times [2021-12-07 00:39:53,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:53,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554344383] [2021-12-07 00:39:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:53,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:39:53,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554344383] [2021-12-07 00:39:53,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554344383] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702067884] [2021-12-07 00:39:53,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:39:53,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:53,576 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:53,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 00:39:53,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-07 00:39:53,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:39:53,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:39:53,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:53,869 INFO L388 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 [2021-12-07 00:39:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:39:53,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:39:53,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702067884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:53,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:39:53,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:39:53,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525729138] [2021-12-07 00:39:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:53,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:39:53,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:39:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:39:53,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:39:53,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 868 transitions, 12081 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:53,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:39:53,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:39:53,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:40:27,719 INFO L129 PetriNetUnfolder]: 32954/86169 cut-off events. [2021-12-07 00:40:27,720 INFO L130 PetriNetUnfolder]: For 566961/567219 co-relation queries the response was YES. [2021-12-07 00:40:30,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349772 conditions, 86169 events. 32954/86169 cut-off events. For 566961/567219 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 1023772 event pairs, 11336 based on Foata normal form. 121/84110 useless extension candidates. Maximal degree in co-relation 349578. Up to 29080 conditions per place. [2021-12-07 00:40:31,129 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 2083 selfloop transitions, 185 changer transitions 11/2364 dead transitions. [2021-12-07 00:40:31,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 2364 transitions, 28237 flow [2021-12-07 00:40:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:40:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-07 00:40:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2191 transitions. [2021-12-07 00:40:31,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6339699074074074 [2021-12-07 00:40:31,133 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2191 transitions. [2021-12-07 00:40:31,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2191 transitions. [2021-12-07 00:40:31,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:40:31,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2191 transitions. [2021-12-07 00:40:31,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 81.14814814814815) internal successors, (2191), 27 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:31,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:31,143 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:31,143 INFO L186 Difference]: Start difference. First operand has 575 places, 868 transitions, 12081 flow. Second operand 27 states and 2191 transitions. [2021-12-07 00:40:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 2364 transitions, 28237 flow [2021-12-07 00:40:36,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 2364 transitions, 27517 flow, removed 277 selfloop flow, removed 8 redundant places. [2021-12-07 00:40:36,210 INFO L242 Difference]: Finished difference. Result has 607 places, 918 transitions, 13067 flow [2021-12-07 00:40:36,211 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=11572, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13067, PETRI_PLACES=607, PETRI_TRANSITIONS=918} [2021-12-07 00:40:36,211 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 482 predicate places. [2021-12-07 00:40:36,211 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 918 transitions, 13067 flow [2021-12-07 00:40:36,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:36,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:40:36,211 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:40:36,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-07 00:40:36,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:40:36,413 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:40:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1042129188, now seen corresponding path program 12 times [2021-12-07 00:40:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:36,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558153474] [2021-12-07 00:40:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:36,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:36,582 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:40:36,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:36,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558153474] [2021-12-07 00:40:36,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558153474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:36,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737254107] [2021-12-07 00:40:36,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:40:36,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:40:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:40:36,583 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:40:36,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 00:40:36,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-07 00:40:36,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:40:36,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:40:36,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:40:36,846 INFO L388 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 [2021-12-07 00:40:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:40:36,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:40:36,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737254107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:36,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:40:36,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:40:36,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226282538] [2021-12-07 00:40:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:36,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:40:36,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:40:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:40:36,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:40:36,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 918 transitions, 13067 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:40:36,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:40:36,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:40:36,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:41:12,161 INFO L129 PetriNetUnfolder]: 32998/86304 cut-off events. [2021-12-07 00:41:12,161 INFO L130 PetriNetUnfolder]: For 558096/558308 co-relation queries the response was YES. [2021-12-07 00:41:15,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350422 conditions, 86304 events. 32998/86304 cut-off events. For 558096/558308 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 1025809 event pairs, 12170 based on Foata normal form. 97/84217 useless extension candidates. Maximal degree in co-relation 350216. Up to 30403 conditions per place. [2021-12-07 00:41:16,086 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1698 selfloop transitions, 158 changer transitions 2/1943 dead transitions. [2021-12-07 00:41:16,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1943 transitions, 24811 flow [2021-12-07 00:41:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:41:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-07 00:41:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1349 transitions. [2021-12-07 00:41:16,088 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65869140625 [2021-12-07 00:41:16,089 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1349 transitions. [2021-12-07 00:41:16,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1349 transitions. [2021-12-07 00:41:16,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:41:16,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1349 transitions. [2021-12-07 00:41:16,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 84.3125) internal successors, (1349), 16 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:16,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:16,093 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 128.0) internal successors, (2176), 17 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:16,093 INFO L186 Difference]: Start difference. First operand has 607 places, 918 transitions, 13067 flow. Second operand 16 states and 1349 transitions. [2021-12-07 00:41:16,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1943 transitions, 24811 flow [2021-12-07 00:41:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 1943 transitions, 24424 flow, removed 154 selfloop flow, removed 4 redundant places. [2021-12-07 00:41:21,229 INFO L242 Difference]: Finished difference. Result has 625 places, 934 transitions, 13553 flow [2021-12-07 00:41:21,230 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=12739, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13553, PETRI_PLACES=625, PETRI_TRANSITIONS=934} [2021-12-07 00:41:21,230 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 500 predicate places. [2021-12-07 00:41:21,230 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 934 transitions, 13553 flow [2021-12-07 00:41:21,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:21,230 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:41:21,230 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:41:21,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 00:41:21,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:41:21,432 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:41:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2081564442, now seen corresponding path program 13 times [2021-12-07 00:41:21,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:21,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130067211] [2021-12-07 00:41:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:21,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:41:21,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:21,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130067211] [2021-12-07 00:41:21,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130067211] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:21,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369189617] [2021-12-07 00:41:21,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:41:21,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:41:21,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:41:21,632 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:41:21,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 00:41:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:21,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:41:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:21,904 INFO L388 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 [2021-12-07 00:41:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:41:21,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:41:21,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369189617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:21,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:41:21,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-07 00:41:21,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362715866] [2021-12-07 00:41:21,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:21,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:41:21,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:21,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:41:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:41:21,935 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:41:21,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 934 transitions, 13553 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:41:21,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:41:21,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:41:21,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:41:57,746 INFO L129 PetriNetUnfolder]: 33179/86555 cut-off events. [2021-12-07 00:41:57,746 INFO L130 PetriNetUnfolder]: For 558121/558382 co-relation queries the response was YES. [2021-12-07 00:42:01,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353498 conditions, 86555 events. 33179/86555 cut-off events. For 558121/558382 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 1029627 event pairs, 11891 based on Foata normal form. 138/84561 useless extension candidates. Maximal degree in co-relation 353285. Up to 30879 conditions per place. [2021-12-07 00:42:01,834 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 2082 selfloop transitions, 172 changer transitions 11/2350 dead transitions. [2021-12-07 00:42:01,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 2350 transitions, 28327 flow [2021-12-07 00:42:01,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:42:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-12-07 00:42:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2191 transitions. [2021-12-07 00:42:01,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6339699074074074 [2021-12-07 00:42:01,837 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2191 transitions. [2021-12-07 00:42:01,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2191 transitions. [2021-12-07 00:42:01,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:42:01,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2191 transitions. [2021-12-07 00:42:01,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 81.14814814814815) internal successors, (2191), 27 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:01,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:01,844 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 128.0) internal successors, (3584), 28 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:01,844 INFO L186 Difference]: Start difference. First operand has 625 places, 934 transitions, 13553 flow. Second operand 27 states and 2191 transitions. [2021-12-07 00:42:01,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 2350 transitions, 28327 flow [2021-12-07 00:42:06,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 2350 transitions, 28042 flow, removed 77 selfloop flow, removed 6 redundant places. [2021-12-07 00:42:06,797 INFO L242 Difference]: Finished difference. Result has 653 places, 950 transitions, 14031 flow [2021-12-07 00:42:06,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=13174, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=761, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14031, PETRI_PLACES=653, PETRI_TRANSITIONS=950} [2021-12-07 00:42:06,798 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 528 predicate places. [2021-12-07 00:42:06,798 INFO L470 AbstractCegarLoop]: Abstraction has has 653 places, 950 transitions, 14031 flow [2021-12-07 00:42:06,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:06,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:42:06,799 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:06,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-07 00:42:06,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 00:42:07,000 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:42:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1012767770, now seen corresponding path program 14 times [2021-12-07 00:42:07,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:07,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5192341] [2021-12-07 00:42:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:07,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:42:07,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5192341] [2021-12-07 00:42:07,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5192341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206672721] [2021-12-07 00:42:07,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:42:07,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:07,109 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:07,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 00:42:07,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:42:07,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:07,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:42:07,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:07,362 INFO L388 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 [2021-12-07 00:42:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:42:07,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:07,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206672721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:07,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:42:07,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:42:07,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888023035] [2021-12-07 00:42:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:07,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:42:07,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:42:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:42:07,396 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:42:07,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 950 transitions, 14031 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:07,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:42:07,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:42:07,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:42:44,233 INFO L129 PetriNetUnfolder]: 33296/86393 cut-off events. [2021-12-07 00:42:44,233 INFO L130 PetriNetUnfolder]: For 564915/565134 co-relation queries the response was YES. [2021-12-07 00:42:48,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355977 conditions, 86393 events. 33296/86393 cut-off events. For 564915/565134 co-relation queries the response was YES. Maximal size of possible extension queue 1923. Compared 1027078 event pairs, 12120 based on Foata normal form. 122/84407 useless extension candidates. Maximal degree in co-relation 355756. Up to 32979 conditions per place. [2021-12-07 00:42:48,514 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 1684 selfloop transitions, 182 changer transitions 8/1959 dead transitions. [2021-12-07 00:42:48,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1959 transitions, 25279 flow [2021-12-07 00:42:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 00:42:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-12-07 00:42:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1802 transitions. [2021-12-07 00:42:48,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6120923913043478 [2021-12-07 00:42:48,517 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1802 transitions. [2021-12-07 00:42:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1802 transitions. [2021-12-07 00:42:48,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:42:48,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1802 transitions. [2021-12-07 00:42:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 78.34782608695652) internal successors, (1802), 23 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:48,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 128.0) internal successors, (3072), 24 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:48,522 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 128.0) internal successors, (3072), 24 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:48,522 INFO L186 Difference]: Start difference. First operand has 653 places, 950 transitions, 14031 flow. Second operand 23 states and 1802 transitions. [2021-12-07 00:42:48,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 1959 transitions, 25279 flow [2021-12-07 00:42:53,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 1959 transitions, 24906 flow, removed 84 selfloop flow, removed 18 redundant places. [2021-12-07 00:42:53,319 INFO L242 Difference]: Finished difference. Result has 666 places, 965 transitions, 14458 flow [2021-12-07 00:42:53,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=13557, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14458, PETRI_PLACES=666, PETRI_TRANSITIONS=965} [2021-12-07 00:42:53,321 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 541 predicate places. [2021-12-07 00:42:53,321 INFO L470 AbstractCegarLoop]: Abstraction has has 666 places, 965 transitions, 14458 flow [2021-12-07 00:42:53,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:53,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:42:53,321 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:42:53,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-07 00:42:53,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 00:42:53,523 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:42:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1134840030, now seen corresponding path program 15 times [2021-12-07 00:42:53,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641135242] [2021-12-07 00:42:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:53,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:42:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641135242] [2021-12-07 00:42:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641135242] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003078863] [2021-12-07 00:42:53,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:42:53,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:53,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:53,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 00:42:53,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-07 00:42:53,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:42:53,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:42:53,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:53,886 INFO L388 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 [2021-12-07 00:42:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:42:53,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:53,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003078863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:53,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:42:53,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:42:53,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586691198] [2021-12-07 00:42:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:53,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:42:53,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:42:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:42:53,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:42:53,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 965 transitions, 14458 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:42:53,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:42:53,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:42:53,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:43:32,797 INFO L129 PetriNetUnfolder]: 34789/91558 cut-off events. [2021-12-07 00:43:32,797 INFO L130 PetriNetUnfolder]: For 616183/616548 co-relation queries the response was YES. [2021-12-07 00:43:37,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 375579 conditions, 91558 events. 34789/91558 cut-off events. For 616183/616548 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 1107868 event pairs, 12150 based on Foata normal form. 157/89543 useless extension candidates. Maximal degree in co-relation 375353. Up to 47483 conditions per place. [2021-12-07 00:43:37,562 INFO L132 encePairwiseOnDemand]: 112/128 looper letters, 2062 selfloop transitions, 195 changer transitions 24/2366 dead transitions. [2021-12-07 00:43:37,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 2366 transitions, 30726 flow [2021-12-07 00:43:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:43:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-12-07 00:43:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2375 transitions. [2021-12-07 00:43:37,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5985383064516129 [2021-12-07 00:43:37,567 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2375 transitions. [2021-12-07 00:43:37,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2375 transitions. [2021-12-07 00:43:37,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:43:37,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2375 transitions. [2021-12-07 00:43:37,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 76.61290322580645) internal successors, (2375), 31 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:37,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 128.0) internal successors, (4096), 32 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:37,576 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 128.0) internal successors, (4096), 32 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:37,576 INFO L186 Difference]: Start difference. First operand has 666 places, 965 transitions, 14458 flow. Second operand 31 states and 2375 transitions. [2021-12-07 00:43:37,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 2366 transitions, 30726 flow [2021-12-07 00:43:43,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 2366 transitions, 30283 flow, removed 94 selfloop flow, removed 13 redundant places. [2021-12-07 00:43:43,522 INFO L242 Difference]: Finished difference. Result has 705 places, 1019 transitions, 15885 flow [2021-12-07 00:43:43,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=14050, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=15885, PETRI_PLACES=705, PETRI_TRANSITIONS=1019} [2021-12-07 00:43:43,523 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 580 predicate places. [2021-12-07 00:43:43,523 INFO L470 AbstractCegarLoop]: Abstraction has has 705 places, 1019 transitions, 15885 flow [2021-12-07 00:43:43,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:43,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:43:43,524 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:43:43,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-07 00:43:43,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 00:43:43,726 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:43:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:43:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1360605904, now seen corresponding path program 16 times [2021-12-07 00:43:43,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:43:43,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922379750] [2021-12-07 00:43:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:43,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:43:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:43:43,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:43:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922379750] [2021-12-07 00:43:43,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922379750] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:43:43,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518742507] [2021-12-07 00:43:43,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:43:43,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:43:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:43:43,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:43:43,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-07 00:43:43,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:43:43,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:43:43,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:43:43,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:43:44,056 INFO L388 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 [2021-12-07 00:43:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:43:44,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:43:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518742507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:43:44,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:43:44,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2021-12-07 00:43:44,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9188579] [2021-12-07 00:43:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:43:44,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:43:44,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:43:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:43:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:43:44,088 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:43:44,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 1019 transitions, 15885 flow. Second operand has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:43:44,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:43:44,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:43:44,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:44:26,157 INFO L129 PetriNetUnfolder]: 34792/91430 cut-off events. [2021-12-07 00:44:26,158 INFO L130 PetriNetUnfolder]: For 644232/644651 co-relation queries the response was YES. [2021-12-07 00:44:30,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378479 conditions, 91430 events. 34792/91430 cut-off events. For 644232/644651 co-relation queries the response was YES. Maximal size of possible extension queue 2052. Compared 1105578 event pairs, 7410 based on Foata normal form. 222/89484 useless extension candidates. Maximal degree in co-relation 378232. Up to 31919 conditions per place. [2021-12-07 00:44:31,223 INFO L132 encePairwiseOnDemand]: 114/128 looper letters, 1950 selfloop transitions, 383 changer transitions 5/2423 dead transitions. [2021-12-07 00:44:31,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 2423 transitions, 31458 flow [2021-12-07 00:44:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:44:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-07 00:44:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2003 transitions. [2021-12-07 00:44:31,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6259375 [2021-12-07 00:44:31,226 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2003 transitions. [2021-12-07 00:44:31,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2003 transitions. [2021-12-07 00:44:31,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:44:31,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2003 transitions. [2021-12-07 00:44:31,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 80.12) internal successors, (2003), 25 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:31,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:31,231 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:31,231 INFO L186 Difference]: Start difference. First operand has 705 places, 1019 transitions, 15885 flow. Second operand 25 states and 2003 transitions. [2021-12-07 00:44:31,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 2423 transitions, 31458 flow [2021-12-07 00:44:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 2423 transitions, 30769 flow, removed 260 selfloop flow, removed 8 redundant places. [2021-12-07 00:44:38,023 INFO L242 Difference]: Finished difference. Result has 733 places, 1041 transitions, 16645 flow [2021-12-07 00:44:38,024 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=15210, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=16645, PETRI_PLACES=733, PETRI_TRANSITIONS=1041} [2021-12-07 00:44:38,024 INFO L334 CegarLoopForPetriNet]: 125 programPoint places, 608 predicate places. [2021-12-07 00:44:38,024 INFO L470 AbstractCegarLoop]: Abstraction has has 733 places, 1041 transitions, 16645 flow [2021-12-07 00:44:38,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:38,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-07 00:44:38,025 INFO L254 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:44:38,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-07 00:44:38,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:44:38,226 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2021-12-07 00:44:38,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:44:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 813877736, now seen corresponding path program 17 times [2021-12-07 00:44:38,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:44:38,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280174097] [2021-12-07 00:44:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:44:38,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:44:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-12-07 00:44:38,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:44:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280174097] [2021-12-07 00:44:38,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280174097] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:44:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758257075] [2021-12-07 00:44:38,333 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:44:38,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:44:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:44:38,334 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:44:38,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e04071a6-5db1-434b-a471-88a52f54e07a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-07 00:44:38,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-07 00:44:38,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:44:38,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:44:38,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:44:38,605 INFO L388 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 [2021-12-07 00:44:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-07 00:44:38,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:44:38,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758257075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:44:38,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:44:38,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-12-07 00:44:38,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378238098] [2021-12-07 00:44:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:44:38,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:44:38,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:44:38,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:44:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:44:38,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2021-12-07 00:44:38,634 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 1041 transitions, 16645 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:44:38,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-07 00:44:38,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2021-12-07 00:44:38,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-07 00:45:25,447 INFO L129 PetriNetUnfolder]: 37756/99444 cut-off events. [2021-12-07 00:45:25,448 INFO L130 PetriNetUnfolder]: For 746338/746714 co-relation queries the response was YES. [2021-12-07 00:45:31,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414646 conditions, 99444 events. 37756/99444 cut-off events. For 746338/746714 co-relation queries the response was YES. Maximal size of possible extension queue 2319. Compared 1224330 event pairs, 12309 based on Foata normal form. 176/97194 useless extension candidates. Maximal degree in co-relation 414388. Up to 46464 conditions per place. [2021-12-07 00:45:31,510 INFO L132 encePairwiseOnDemand]: 113/128 looper letters, 2343 selfloop transitions, 227 changer transitions 14/2669 dead transitions. [2021-12-07 00:45:31,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 2669 transitions, 34946 flow [2021-12-07 00:45:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-07 00:45:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-12-07 00:45:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2607 transitions. [2021-12-07 00:45:31,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2021-12-07 00:45:31,514 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2607 transitions. [2021-12-07 00:45:31,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2607 transitions. [2021-12-07 00:45:31,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 00:45:31,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2607 transitions. [2021-12-07 00:45:31,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 79.0) internal successors, (2607), 33 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:31,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 128.0) internal successors, (4352), 34 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:31,520 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 128.0) internal successors, (4352), 34 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:45:31,520 INFO L186 Difference]: Start difference. First operand has 733 places, 1041 transitions, 16645 flow. Second operand 33 states and 2607 transitions. [2021-12-07 00:45:31,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 2669 transitions, 34946 flow