./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.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_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/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_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/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_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/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 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:41:26,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:41:26,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:41:26,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:41:26,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:41:26,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:41:26,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:41:26,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:41:26,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:41:26,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:41:26,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:41:26,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:41:26,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:41:26,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:41:26,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:41:26,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:41:26,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:41:26,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:41:26,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:41:26,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:41:26,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:41:26,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:41:26,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:41:26,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:41:26,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:41:26,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:41:26,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:41:26,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:41:26,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:41:26,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:41:26,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:41:26,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:41:26,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:41:26,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:41:26,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:41:26,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:41:26,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:41:26,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:41:26,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:41:26,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:41:26,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:41:26,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/config/svcomp-DataRace-32bit-Automizer_Default.epf [2021-12-06 20:41:26,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:41:26,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:41:26,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:41:26,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:41:26,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:41:26,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:41:26,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:41:26,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:41:26,455 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:41:26,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:41:26,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:41:26,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:41:26,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:41:26,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:41:26,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:41:26,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:41:26,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:41:26,458 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_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 [2021-12-06 20:41:26,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:41:26,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:41:26,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:41:26,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:41:26,650 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:41:26,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2021-12-06 20:41:26,699 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/data/9102be0d2/c1138359351a483281d486d5fb215802/FLAGafb5a2450 [2021-12-06 20:41:27,128 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:41:27,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2021-12-06 20:41:27,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/data/9102be0d2/c1138359351a483281d486d5fb215802/FLAGafb5a2450 [2021-12-06 20:41:27,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/data/9102be0d2/c1138359351a483281d486d5fb215802 [2021-12-06 20:41:27,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:41:27,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:41:27,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:41:27,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:41:27,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:41:27,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcaea37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27, skipping insertion in model container [2021-12-06 20:41:27,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:41:27,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:41:27,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:41:27,465 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:41:27,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:41:27,535 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:41:27,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27 WrapperNode [2021-12-06 20:41:27,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:41:27,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:41:27,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:41:27,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:41:27,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,572 INFO L137 Inliner]: procedures = 266, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2021-12-06 20:41:27,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:41:27,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:41:27,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:41:27,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:41:27,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:41:27,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:41:27,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:41:27,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:41:27,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (1/1) ... [2021-12-06 20:41:27,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:41:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:41:27,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:41:27,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:41:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:41:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-06 20:41:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:41:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:41:27,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:41:27,666 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 20:41:27,753 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:41:27,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:41:27,865 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:41:27,871 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:41:27,871 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 20:41:27,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:41:27 BoogieIcfgContainer [2021-12-06 20:41:27,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:41:27,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:41:27,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:41:27,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:41:27,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:41:27" (1/3) ... [2021-12-06 20:41:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc2e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:41:27, skipping insertion in model container [2021-12-06 20:41:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:41:27" (2/3) ... [2021-12-06 20:41:27,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc2e90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:41:27, skipping insertion in model container [2021-12-06 20:41:27,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:41:27" (3/3) ... [2021-12-06 20:41:27,878 INFO L111 eAbstractionObserver]: Analyzing ICFG 06-symbeq_13-equ_proc_nr.i [2021-12-06 20:41:27,882 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 20:41:27,882 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:41:27,883 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 20:41:27,883 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,904 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,905 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,906 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,907 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,907 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,907 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,907 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,907 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,908 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,908 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,908 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,908 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,909 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,909 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,909 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,909 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,909 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,912 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:41:27,914 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 20:41:27,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:41:27,954 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 [2021-12-06 20:41:27,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 20:41:27,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 84 transitions, 173 flow [2021-12-06 20:41:28,012 INFO L129 PetriNetUnfolder]: 1/83 cut-off events. [2021-12-06 20:41:28,012 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 20:41:28,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 1/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-12-06 20:41:28,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 84 transitions, 173 flow [2021-12-06 20:41:28,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 83 transitions, 169 flow [2021-12-06 20:41:28,039 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-12-06 20:41:28,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 20:41:28,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:28,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:28,040 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1261805432, now seen corresponding path program 1 times [2021-12-06 20:41:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:28,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058767332] [2021-12-06 20:41:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:28,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:28,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058767332] [2021-12-06 20:41:28,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058767332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:28,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:41:28,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615859032] [2021-12-06 20:41:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:28,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:41:28,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:41:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:41:28,403 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 84 [2021-12-06 20:41:28,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:28,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 84 [2021-12-06 20:41:28,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:28,588 INFO L129 PetriNetUnfolder]: 91/363 cut-off events. [2021-12-06 20:41:28,589 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-06 20:41:28,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 363 events. 91/363 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1527 event pairs, 32 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 522. Up to 162 conditions per place. [2021-12-06 20:41:28,593 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 30 selfloop transitions, 22 changer transitions 4/112 dead transitions. [2021-12-06 20:41:28,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 112 transitions, 339 flow [2021-12-06 20:41:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:41:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:41:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2021-12-06 20:41:28,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2021-12-06 20:41:28,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 399 transitions. [2021-12-06 20:41:28,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 399 transitions. [2021-12-06 20:41:28,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:28,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 399 transitions. [2021-12-06 20:41:28,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,622 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,624 INFO L186 Difference]: Start difference. First operand has 86 places, 83 transitions, 169 flow. Second operand 6 states and 399 transitions. [2021-12-06 20:41:28,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 112 transitions, 339 flow [2021-12-06 20:41:28,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 112 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:41:28,631 INFO L242 Difference]: Finished difference. Result has 95 places, 104 transitions, 318 flow [2021-12-06 20:41:28,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2021-12-06 20:41:28,636 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2021-12-06 20:41:28,636 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 318 flow [2021-12-06 20:41:28,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:28,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:28,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:41:28,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1969444479, now seen corresponding path program 1 times [2021-12-06 20:41:28,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:28,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958174433] [2021-12-06 20:41:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:28,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:28,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:28,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958174433] [2021-12-06 20:41:28,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958174433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:28,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:28,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:41:28,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446865639] [2021-12-06 20:41:28,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:28,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:41:28,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:28,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:41:28,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:41:28,751 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 84 [2021-12-06 20:41:28,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:28,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 84 [2021-12-06 20:41:28,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:28,884 INFO L129 PetriNetUnfolder]: 124/434 cut-off events. [2021-12-06 20:41:28,884 INFO L130 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2021-12-06 20:41:28,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 434 events. 124/434 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1987 event pairs, 27 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 967. Up to 203 conditions per place. [2021-12-06 20:41:28,889 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 37 selfloop transitions, 26 changer transitions 11/140 dead transitions. [2021-12-06 20:41:28,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 634 flow [2021-12-06 20:41:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:41:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:41:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2021-12-06 20:41:28,893 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-12-06 20:41:28,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2021-12-06 20:41:28,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2021-12-06 20:41:28,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:28,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2021-12-06 20:41:28,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,899 INFO L186 Difference]: Start difference. First operand has 95 places, 104 transitions, 318 flow. Second operand 6 states and 444 transitions. [2021-12-06 20:41:28,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 634 flow [2021-12-06 20:41:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 140 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 20:41:28,907 INFO L242 Difference]: Finished difference. Result has 105 places, 125 transitions, 542 flow [2021-12-06 20:41:28,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=105, PETRI_TRANSITIONS=125} [2021-12-06 20:41:28,908 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 19 predicate places. [2021-12-06 20:41:28,908 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 542 flow [2021-12-06 20:41:28,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:28,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:28,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:28,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:41:28,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 795657530, now seen corresponding path program 1 times [2021-12-06 20:41:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990117122] [2021-12-06 20:41:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:28,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:29,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:29,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990117122] [2021-12-06 20:41:29,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990117122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:29,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:29,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:29,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358313707] [2021-12-06 20:41:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:29,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:29,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:29,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:29,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 542 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:29,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:29,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:29,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:29,753 INFO L129 PetriNetUnfolder]: 420/1308 cut-off events. [2021-12-06 20:41:29,753 INFO L130 PetriNetUnfolder]: For 1002/1004 co-relation queries the response was YES. [2021-12-06 20:41:29,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 1308 events. 420/1308 cut-off events. For 1002/1004 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8664 event pairs, 79 based on Foata normal form. 11/1314 useless extension candidates. Maximal degree in co-relation 2332. Up to 340 conditions per place. [2021-12-06 20:41:29,763 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 180 selfloop transitions, 53 changer transitions 31/303 dead transitions. [2021-12-06 20:41:29,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 303 transitions, 2168 flow [2021-12-06 20:41:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:41:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-06 20:41:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 737 transitions. [2021-12-06 20:41:29,766 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.584920634920635 [2021-12-06 20:41:29,766 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 737 transitions. [2021-12-06 20:41:29,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 737 transitions. [2021-12-06 20:41:29,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:29,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 737 transitions. [2021-12-06 20:41:29,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 49.13333333333333) internal successors, (737), 15 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:29,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:29,772 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:29,772 INFO L186 Difference]: Start difference. First operand has 105 places, 125 transitions, 542 flow. Second operand 15 states and 737 transitions. [2021-12-06 20:41:29,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 303 transitions, 2168 flow [2021-12-06 20:41:29,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 303 transitions, 2114 flow, removed 27 selfloop flow, removed 0 redundant places. [2021-12-06 20:41:29,789 INFO L242 Difference]: Finished difference. Result has 130 places, 176 transitions, 1175 flow [2021-12-06 20:41:29,790 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1175, PETRI_PLACES=130, PETRI_TRANSITIONS=176} [2021-12-06 20:41:29,790 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2021-12-06 20:41:29,791 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 176 transitions, 1175 flow [2021-12-06 20:41:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:29,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:29,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:29,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:41:29,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:29,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1460417460, now seen corresponding path program 2 times [2021-12-06 20:41:29,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:29,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990570956] [2021-12-06 20:41:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:29,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:30,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:30,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990570956] [2021-12-06 20:41:30,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990570956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:30,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:30,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:30,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681138538] [2021-12-06 20:41:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:30,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:30,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:30,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:30,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 176 transitions, 1175 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:30,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:30,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:30,526 INFO L129 PetriNetUnfolder]: 392/1281 cut-off events. [2021-12-06 20:41:30,533 INFO L130 PetriNetUnfolder]: For 2042/2049 co-relation queries the response was YES. [2021-12-06 20:41:30,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 1281 events. 392/1281 cut-off events. For 2042/2049 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8680 event pairs, 118 based on Foata normal form. 9/1285 useless extension candidates. Maximal degree in co-relation 3769. Up to 354 conditions per place. [2021-12-06 20:41:30,542 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 151 selfloop transitions, 52 changer transitions 22/264 dead transitions. [2021-12-06 20:41:30,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 264 transitions, 2157 flow [2021-12-06 20:41:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 642 transitions. [2021-12-06 20:41:30,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2021-12-06 20:41:30,545 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 642 transitions. [2021-12-06 20:41:30,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 642 transitions. [2021-12-06 20:41:30,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:30,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 642 transitions. [2021-12-06 20:41:30,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 49.38461538461539) internal successors, (642), 13 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,550 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,550 INFO L186 Difference]: Start difference. First operand has 130 places, 176 transitions, 1175 flow. Second operand 13 states and 642 transitions. [2021-12-06 20:41:30,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 264 transitions, 2157 flow [2021-12-06 20:41:30,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 264 transitions, 2142 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-12-06 20:41:30,570 INFO L242 Difference]: Finished difference. Result has 145 places, 184 transitions, 1465 flow [2021-12-06 20:41:30,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1465, PETRI_PLACES=145, PETRI_TRANSITIONS=184} [2021-12-06 20:41:30,571 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 59 predicate places. [2021-12-06 20:41:30,571 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 184 transitions, 1465 flow [2021-12-06 20:41:30,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:30,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:30,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:41:30,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1037099328, now seen corresponding path program 3 times [2021-12-06 20:41:30,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:30,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870135075] [2021-12-06 20:41:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:30,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:30,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:30,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870135075] [2021-12-06 20:41:30,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870135075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:30,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:30,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:30,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162262811] [2021-12-06 20:41:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:30,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:30,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:30,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:30,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 184 transitions, 1465 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:30,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:30,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:30,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:31,248 INFO L129 PetriNetUnfolder]: 429/1358 cut-off events. [2021-12-06 20:41:31,248 INFO L130 PetriNetUnfolder]: For 3615/3618 co-relation queries the response was YES. [2021-12-06 20:41:31,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 1358 events. 429/1358 cut-off events. For 3615/3618 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9243 event pairs, 98 based on Foata normal form. 11/1364 useless extension candidates. Maximal degree in co-relation 4954. Up to 331 conditions per place. [2021-12-06 20:41:31,261 INFO L132 encePairwiseOnDemand]: 68/84 looper letters, 207 selfloop transitions, 43 changer transitions 19/308 dead transitions. [2021-12-06 20:41:31,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 308 transitions, 2883 flow [2021-12-06 20:41:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:41:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:41:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 676 transitions. [2021-12-06 20:41:31,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5748299319727891 [2021-12-06 20:41:31,265 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 676 transitions. [2021-12-06 20:41:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 676 transitions. [2021-12-06 20:41:31,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:31,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 676 transitions. [2021-12-06 20:41:31,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 48.285714285714285) internal successors, (676), 14 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:31,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:31,272 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:31,272 INFO L186 Difference]: Start difference. First operand has 145 places, 184 transitions, 1465 flow. Second operand 14 states and 676 transitions. [2021-12-06 20:41:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 308 transitions, 2883 flow [2021-12-06 20:41:31,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 308 transitions, 2852 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-12-06 20:41:31,305 INFO L242 Difference]: Finished difference. Result has 155 places, 206 transitions, 1843 flow [2021-12-06 20:41:31,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1843, PETRI_PLACES=155, PETRI_TRANSITIONS=206} [2021-12-06 20:41:31,306 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2021-12-06 20:41:31,307 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 206 transitions, 1843 flow [2021-12-06 20:41:31,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:31,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:31,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:31,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:41:31,308 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1450877020, now seen corresponding path program 4 times [2021-12-06 20:41:31,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:31,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033949411] [2021-12-06 20:41:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:31,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:31,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033949411] [2021-12-06 20:41:31,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033949411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:31,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:31,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:31,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315013673] [2021-12-06 20:41:31,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:31,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:31,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:31,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:31,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:31,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 206 transitions, 1843 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:31,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:31,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:31,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:32,098 INFO L129 PetriNetUnfolder]: 433/1393 cut-off events. [2021-12-06 20:41:32,098 INFO L130 PetriNetUnfolder]: For 5344/5360 co-relation queries the response was YES. [2021-12-06 20:41:32,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 1393 events. 433/1393 cut-off events. For 5344/5360 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9680 event pairs, 114 based on Foata normal form. 17/1405 useless extension candidates. Maximal degree in co-relation 5221. Up to 413 conditions per place. [2021-12-06 20:41:32,108 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 169 selfloop transitions, 61 changer transitions 21/290 dead transitions. [2021-12-06 20:41:32,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 290 transitions, 2926 flow [2021-12-06 20:41:32,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:41:32,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:41:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 687 transitions. [2021-12-06 20:41:32,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5841836734693877 [2021-12-06 20:41:32,111 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 687 transitions. [2021-12-06 20:41:32,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 687 transitions. [2021-12-06 20:41:32,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:32,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 687 transitions. [2021-12-06 20:41:32,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 49.07142857142857) internal successors, (687), 14 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) [2021-12-06 20:41:32,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,116 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,116 INFO L186 Difference]: Start difference. First operand has 155 places, 206 transitions, 1843 flow. Second operand 14 states and 687 transitions. [2021-12-06 20:41:32,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 290 transitions, 2926 flow [2021-12-06 20:41:32,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 290 transitions, 2860 flow, removed 21 selfloop flow, removed 6 redundant places. [2021-12-06 20:41:32,146 INFO L242 Difference]: Finished difference. Result has 164 places, 210 transitions, 1995 flow [2021-12-06 20:41:32,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1995, PETRI_PLACES=164, PETRI_TRANSITIONS=210} [2021-12-06 20:41:32,147 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 78 predicate places. [2021-12-06 20:41:32,147 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 210 transitions, 1995 flow [2021-12-06 20:41:32,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,148 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:32,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:32,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:41:32,148 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -156941566, now seen corresponding path program 1 times [2021-12-06 20:41:32,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:32,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388557314] [2021-12-06 20:41:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:32,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:32,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:32,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388557314] [2021-12-06 20:41:32,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388557314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:32,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:32,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:32,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123924819] [2021-12-06 20:41:32,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:32,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:32,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:32,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:32,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 210 transitions, 1995 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:32,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:32,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:32,708 INFO L129 PetriNetUnfolder]: 421/1346 cut-off events. [2021-12-06 20:41:32,708 INFO L130 PetriNetUnfolder]: For 5830/5830 co-relation queries the response was YES. [2021-12-06 20:41:32,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5868 conditions, 1346 events. 421/1346 cut-off events. For 5830/5830 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9155 event pairs, 97 based on Foata normal form. 21/1362 useless extension candidates. Maximal degree in co-relation 5485. Up to 334 conditions per place. [2021-12-06 20:41:32,724 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 136 selfloop transitions, 32 changer transitions 131/338 dead transitions. [2021-12-06 20:41:32,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 338 transitions, 3944 flow [2021-12-06 20:41:32,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 634 transitions. [2021-12-06 20:41:32,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5805860805860806 [2021-12-06 20:41:32,726 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 634 transitions. [2021-12-06 20:41:32,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 634 transitions. [2021-12-06 20:41:32,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:32,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 634 transitions. [2021-12-06 20:41:32,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 48.76923076923077) internal successors, (634), 13 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,731 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,731 INFO L186 Difference]: Start difference. First operand has 164 places, 210 transitions, 1995 flow. Second operand 13 states and 634 transitions. [2021-12-06 20:41:32,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 338 transitions, 3944 flow [2021-12-06 20:41:32,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 338 transitions, 3714 flow, removed 17 selfloop flow, removed 11 redundant places. [2021-12-06 20:41:32,773 INFO L242 Difference]: Finished difference. Result has 171 places, 163 transitions, 1275 flow [2021-12-06 20:41:32,774 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1275, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2021-12-06 20:41:32,775 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 85 predicate places. [2021-12-06 20:41:32,775 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 1275 flow [2021-12-06 20:41:32,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:32,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:32,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:41:32,776 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash -767399574, now seen corresponding path program 5 times [2021-12-06 20:41:32,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:32,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284994777] [2021-12-06 20:41:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:32,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:32,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:32,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284994777] [2021-12-06 20:41:32,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284994777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:32,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:32,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:32,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717715581] [2021-12-06 20:41:32,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:32,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:32,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:32,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:32,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:32,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:32,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 1275 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:32,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:32,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:32,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:33,347 INFO L129 PetriNetUnfolder]: 250/905 cut-off events. [2021-12-06 20:41:33,347 INFO L130 PetriNetUnfolder]: For 3677/3687 co-relation queries the response was YES. [2021-12-06 20:41:33,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 905 events. 250/905 cut-off events. For 3677/3687 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5539 event pairs, 91 based on Foata normal form. 11/911 useless extension candidates. Maximal degree in co-relation 3516. Up to 327 conditions per place. [2021-12-06 20:41:33,355 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 133 selfloop transitions, 31 changer transitions 16/221 dead transitions. [2021-12-06 20:41:33,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 221 transitions, 2125 flow [2021-12-06 20:41:33,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 616 transitions. [2021-12-06 20:41:33,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2021-12-06 20:41:33,357 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 616 transitions. [2021-12-06 20:41:33,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 616 transitions. [2021-12-06 20:41:33,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:33,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 616 transitions. [2021-12-06 20:41:33,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 47.38461538461539) internal successors, (616), 13 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,361 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,361 INFO L186 Difference]: Start difference. First operand has 171 places, 163 transitions, 1275 flow. Second operand 13 states and 616 transitions. [2021-12-06 20:41:33,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 221 transitions, 2125 flow [2021-12-06 20:41:33,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 221 transitions, 1938 flow, removed 83 selfloop flow, removed 12 redundant places. [2021-12-06 20:41:33,381 INFO L242 Difference]: Finished difference. Result has 169 places, 169 transitions, 1351 flow [2021-12-06 20:41:33,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1351, PETRI_PLACES=169, PETRI_TRANSITIONS=169} [2021-12-06 20:41:33,382 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 83 predicate places. [2021-12-06 20:41:33,382 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 169 transitions, 1351 flow [2021-12-06 20:41:33,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,382 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:33,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:41:33,382 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1785874460, now seen corresponding path program 6 times [2021-12-06 20:41:33,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:33,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095619421] [2021-12-06 20:41:33,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:33,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:33,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:33,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095619421] [2021-12-06 20:41:33,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095619421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:33,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:33,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:33,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607841771] [2021-12-06 20:41:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:33,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:33,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:33,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:33,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 169 transitions, 1351 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:33,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:33,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:33,939 INFO L129 PetriNetUnfolder]: 274/981 cut-off events. [2021-12-06 20:41:33,939 INFO L130 PetriNetUnfolder]: For 3331/3334 co-relation queries the response was YES. [2021-12-06 20:41:33,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 981 events. 274/981 cut-off events. For 3331/3334 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6144 event pairs, 91 based on Foata normal form. 10/986 useless extension candidates. Maximal degree in co-relation 3554. Up to 327 conditions per place. [2021-12-06 20:41:33,947 INFO L132 encePairwiseOnDemand]: 68/84 looper letters, 159 selfloop transitions, 15 changer transitions 58/273 dead transitions. [2021-12-06 20:41:33,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 273 transitions, 2640 flow [2021-12-06 20:41:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 624 transitions. [2021-12-06 20:41:33,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2021-12-06 20:41:33,949 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 624 transitions. [2021-12-06 20:41:33,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 624 transitions. [2021-12-06 20:41:33,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:33,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 624 transitions. [2021-12-06 20:41:33,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,952 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,952 INFO L186 Difference]: Start difference. First operand has 169 places, 169 transitions, 1351 flow. Second operand 13 states and 624 transitions. [2021-12-06 20:41:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 273 transitions, 2640 flow [2021-12-06 20:41:33,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 273 transitions, 2584 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-12-06 20:41:33,971 INFO L242 Difference]: Finished difference. Result has 177 places, 165 transitions, 1282 flow [2021-12-06 20:41:33,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1282, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2021-12-06 20:41:33,972 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 91 predicate places. [2021-12-06 20:41:33,972 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 1282 flow [2021-12-06 20:41:33,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:33,972 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:33,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:33,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:41:33,972 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:33,973 INFO L85 PathProgramCache]: Analyzing trace with hash -157529234, now seen corresponding path program 7 times [2021-12-06 20:41:33,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:33,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037264692] [2021-12-06 20:41:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:33,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:34,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:34,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037264692] [2021-12-06 20:41:34,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037264692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:34,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:34,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:34,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865717946] [2021-12-06 20:41:34,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:34,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:34,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:34,098 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:34,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 1282 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:34,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:34,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:34,478 INFO L129 PetriNetUnfolder]: 261/951 cut-off events. [2021-12-06 20:41:34,479 INFO L130 PetriNetUnfolder]: For 3701/3704 co-relation queries the response was YES. [2021-12-06 20:41:34,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 951 events. 261/951 cut-off events. For 3701/3704 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5937 event pairs, 97 based on Foata normal form. 10/956 useless extension candidates. Maximal degree in co-relation 3509. Up to 327 conditions per place. [2021-12-06 20:41:34,486 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 150 selfloop transitions, 18 changer transitions 60/269 dead transitions. [2021-12-06 20:41:34,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 269 transitions, 2705 flow [2021-12-06 20:41:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:34,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:34,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 623 transitions. [2021-12-06 20:41:34,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2021-12-06 20:41:34,488 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 623 transitions. [2021-12-06 20:41:34,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 623 transitions. [2021-12-06 20:41:34,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:34,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 623 transitions. [2021-12-06 20:41:34,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 47.92307692307692) internal successors, (623), 13 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,491 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,491 INFO L186 Difference]: Start difference. First operand has 177 places, 165 transitions, 1282 flow. Second operand 13 states and 623 transitions. [2021-12-06 20:41:34,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 269 transitions, 2705 flow [2021-12-06 20:41:34,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 269 transitions, 2529 flow, removed 72 selfloop flow, removed 12 redundant places. [2021-12-06 20:41:34,512 INFO L242 Difference]: Finished difference. Result has 179 places, 167 transitions, 1321 flow [2021-12-06 20:41:34,512 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1321, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2021-12-06 20:41:34,513 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 93 predicate places. [2021-12-06 20:41:34,513 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 1321 flow [2021-12-06 20:41:34,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:34,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:34,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:41:34,513 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash -181248448, now seen corresponding path program 8 times [2021-12-06 20:41:34,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868708540] [2021-12-06 20:41:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:34,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:34,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868708540] [2021-12-06 20:41:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868708540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:34,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:34,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:34,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758354258] [2021-12-06 20:41:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:34,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:34,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:34,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:34,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 167 transitions, 1321 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:34,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:34,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:34,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:35,000 INFO L129 PetriNetUnfolder]: 223/824 cut-off events. [2021-12-06 20:41:35,000 INFO L130 PetriNetUnfolder]: For 3137/3140 co-relation queries the response was YES. [2021-12-06 20:41:35,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 824 events. 223/824 cut-off events. For 3137/3140 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4855 event pairs, 89 based on Foata normal form. 5/824 useless extension candidates. Maximal degree in co-relation 2977. Up to 327 conditions per place. [2021-12-06 20:41:35,007 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 137 selfloop transitions, 20 changer transitions 17/215 dead transitions. [2021-12-06 20:41:35,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 215 transitions, 2016 flow [2021-12-06 20:41:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 611 transitions. [2021-12-06 20:41:35,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2021-12-06 20:41:35,009 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 611 transitions. [2021-12-06 20:41:35,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 611 transitions. [2021-12-06 20:41:35,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:35,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 611 transitions. [2021-12-06 20:41:35,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,012 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,012 INFO L186 Difference]: Start difference. First operand has 179 places, 167 transitions, 1321 flow. Second operand 13 states and 611 transitions. [2021-12-06 20:41:35,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 215 transitions, 2016 flow [2021-12-06 20:41:35,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 215 transitions, 1897 flow, removed 33 selfloop flow, removed 13 redundant places. [2021-12-06 20:41:35,029 INFO L242 Difference]: Finished difference. Result has 179 places, 169 transitions, 1326 flow [2021-12-06 20:41:35,029 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1326, PETRI_PLACES=179, PETRI_TRANSITIONS=169} [2021-12-06 20:41:35,030 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 93 predicate places. [2021-12-06 20:41:35,030 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 169 transitions, 1326 flow [2021-12-06 20:41:35,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:35,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:35,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:41:35,030 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -753963882, now seen corresponding path program 9 times [2021-12-06 20:41:35,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:35,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911753709] [2021-12-06 20:41:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:35,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:35,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:35,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911753709] [2021-12-06 20:41:35,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911753709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:35,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:35,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:35,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680459298] [2021-12-06 20:41:35,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:35,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:35,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:35,160 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:35,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 169 transitions, 1326 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:35,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:35,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:35,485 INFO L129 PetriNetUnfolder]: 215/780 cut-off events. [2021-12-06 20:41:35,485 INFO L130 PetriNetUnfolder]: For 2669/2672 co-relation queries the response was YES. [2021-12-06 20:41:35,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 780 events. 215/780 cut-off events. For 2669/2672 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4433 event pairs, 85 based on Foata normal form. 10/785 useless extension candidates. Maximal degree in co-relation 2847. Up to 327 conditions per place. [2021-12-06 20:41:35,491 INFO L132 encePairwiseOnDemand]: 68/84 looper letters, 128 selfloop transitions, 13 changer transitions 44/226 dead transitions. [2021-12-06 20:41:35,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 226 transitions, 2067 flow [2021-12-06 20:41:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:41:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:41:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 652 transitions. [2021-12-06 20:41:35,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5544217687074829 [2021-12-06 20:41:35,493 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 652 transitions. [2021-12-06 20:41:35,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 652 transitions. [2021-12-06 20:41:35,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:35,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 652 transitions. [2021-12-06 20:41:35,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,496 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,496 INFO L186 Difference]: Start difference. First operand has 179 places, 169 transitions, 1326 flow. Second operand 14 states and 652 transitions. [2021-12-06 20:41:35,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 226 transitions, 2067 flow [2021-12-06 20:41:35,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 226 transitions, 2024 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-12-06 20:41:35,511 INFO L242 Difference]: Finished difference. Result has 184 places, 161 transitions, 1182 flow [2021-12-06 20:41:35,511 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1182, PETRI_PLACES=184, PETRI_TRANSITIONS=161} [2021-12-06 20:41:35,511 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 98 predicate places. [2021-12-06 20:41:35,512 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 161 transitions, 1182 flow [2021-12-06 20:41:35,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:35,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:35,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:41:35,512 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1673889548, now seen corresponding path program 10 times [2021-12-06 20:41:35,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:35,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428673501] [2021-12-06 20:41:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:35,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:35,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:35,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428673501] [2021-12-06 20:41:35,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428673501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:35,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:35,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:35,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442272534] [2021-12-06 20:41:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:35,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:35,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:35,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:35,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 161 transitions, 1182 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:35,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:35,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:35,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:36,084 INFO L129 PetriNetUnfolder]: 202/741 cut-off events. [2021-12-06 20:41:36,084 INFO L130 PetriNetUnfolder]: For 2254/2263 co-relation queries the response was YES. [2021-12-06 20:41:36,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 741 events. 202/741 cut-off events. For 2254/2263 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4184 event pairs, 71 based on Foata normal form. 16/754 useless extension candidates. Maximal degree in co-relation 2841. Up to 327 conditions per place. [2021-12-06 20:41:36,090 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 120 selfloop transitions, 22 changer transitions 35/218 dead transitions. [2021-12-06 20:41:36,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 218 transitions, 1913 flow [2021-12-06 20:41:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:41:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-06 20:41:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 693 transitions. [2021-12-06 20:41:36,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.55 [2021-12-06 20:41:36,092 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 693 transitions. [2021-12-06 20:41:36,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 693 transitions. [2021-12-06 20:41:36,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:36,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 693 transitions. [2021-12-06 20:41:36,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 46.2) internal successors, (693), 15 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,095 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 84.0) internal successors, (1344), 16 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,096 INFO L186 Difference]: Start difference. First operand has 184 places, 161 transitions, 1182 flow. Second operand 15 states and 693 transitions. [2021-12-06 20:41:36,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 218 transitions, 1913 flow [2021-12-06 20:41:36,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 218 transitions, 1785 flow, removed 47 selfloop flow, removed 15 redundant places. [2021-12-06 20:41:36,114 INFO L242 Difference]: Finished difference. Result has 173 places, 157 transitions, 1079 flow [2021-12-06 20:41:36,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1079, PETRI_PLACES=173, PETRI_TRANSITIONS=157} [2021-12-06 20:41:36,115 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2021-12-06 20:41:36,115 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1079 flow [2021-12-06 20:41:36,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:36,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:36,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:41:36,115 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:36,116 INFO L85 PathProgramCache]: Analyzing trace with hash -93538460, now seen corresponding path program 11 times [2021-12-06 20:41:36,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807310574] [2021-12-06 20:41:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:36,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:36,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807310574] [2021-12-06 20:41:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807310574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:36,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:36,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:36,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634384332] [2021-12-06 20:41:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:36,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:36,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:36,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:36,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 157 transitions, 1079 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:36,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:36,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:36,599 INFO L129 PetriNetUnfolder]: 222/831 cut-off events. [2021-12-06 20:41:36,599 INFO L130 PetriNetUnfolder]: For 2334/2337 co-relation queries the response was YES. [2021-12-06 20:41:36,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 831 events. 222/831 cut-off events. For 2334/2337 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4993 event pairs, 80 based on Foata normal form. 10/838 useless extension candidates. Maximal degree in co-relation 3107. Up to 327 conditions per place. [2021-12-06 20:41:36,605 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 135 selfloop transitions, 18 changer transitions 41/235 dead transitions. [2021-12-06 20:41:36,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 235 transitions, 2092 flow [2021-12-06 20:41:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 614 transitions. [2021-12-06 20:41:36,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2021-12-06 20:41:36,606 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 614 transitions. [2021-12-06 20:41:36,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 614 transitions. [2021-12-06 20:41:36,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:36,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 614 transitions. [2021-12-06 20:41:36,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 47.23076923076923) internal successors, (614), 13 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,609 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,609 INFO L186 Difference]: Start difference. First operand has 173 places, 157 transitions, 1079 flow. Second operand 13 states and 614 transitions. [2021-12-06 20:41:36,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 235 transitions, 2092 flow [2021-12-06 20:41:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 235 transitions, 1978 flow, removed 27 selfloop flow, removed 14 redundant places. [2021-12-06 20:41:36,622 INFO L242 Difference]: Finished difference. Result has 170 places, 158 transitions, 1100 flow [2021-12-06 20:41:36,622 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1100, PETRI_PLACES=170, PETRI_TRANSITIONS=158} [2021-12-06 20:41:36,623 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 84 predicate places. [2021-12-06 20:41:36,623 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 158 transitions, 1100 flow [2021-12-06 20:41:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,623 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:36,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:41:36,623 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 438653498, now seen corresponding path program 12 times [2021-12-06 20:41:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130794044] [2021-12-06 20:41:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:36,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:36,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130794044] [2021-12-06 20:41:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130794044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:36,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:36,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:36,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638265754] [2021-12-06 20:41:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:36,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:36,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:36,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:36,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 158 transitions, 1100 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:36,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:36,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:36,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:37,170 INFO L129 PetriNetUnfolder]: 209/798 cut-off events. [2021-12-06 20:41:37,170 INFO L130 PetriNetUnfolder]: For 2127/2130 co-relation queries the response was YES. [2021-12-06 20:41:37,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 798 events. 209/798 cut-off events. For 2127/2130 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4749 event pairs, 77 based on Foata normal form. 10/805 useless extension candidates. Maximal degree in co-relation 2980. Up to 327 conditions per place. [2021-12-06 20:41:37,175 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 120 selfloop transitions, 21 changer transitions 33/215 dead transitions. [2021-12-06 20:41:37,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 215 transitions, 1848 flow [2021-12-06 20:41:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:41:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:41:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 654 transitions. [2021-12-06 20:41:37,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2021-12-06 20:41:37,177 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 654 transitions. [2021-12-06 20:41:37,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 654 transitions. [2021-12-06 20:41:37,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:37,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 654 transitions. [2021-12-06 20:41:37,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 46.714285714285715) internal successors, (654), 14 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,179 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,180 INFO L186 Difference]: Start difference. First operand has 170 places, 158 transitions, 1100 flow. Second operand 14 states and 654 transitions. [2021-12-06 20:41:37,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 215 transitions, 1848 flow [2021-12-06 20:41:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 215 transitions, 1781 flow, removed 19 selfloop flow, removed 9 redundant places. [2021-12-06 20:41:37,193 INFO L242 Difference]: Finished difference. Result has 175 places, 158 transitions, 1116 flow [2021-12-06 20:41:37,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1116, PETRI_PLACES=175, PETRI_TRANSITIONS=158} [2021-12-06 20:41:37,194 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 89 predicate places. [2021-12-06 20:41:37,194 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 158 transitions, 1116 flow [2021-12-06 20:41:37,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:37,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:37,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:41:37,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:37,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -733128924, now seen corresponding path program 13 times [2021-12-06 20:41:37,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:37,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679852154] [2021-12-06 20:41:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:37,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:37,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:37,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679852154] [2021-12-06 20:41:37,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679852154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:37,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:37,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377235601] [2021-12-06 20:41:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:37,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:37,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:37,323 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:37,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 158 transitions, 1116 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:37,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:37,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:37,668 INFO L129 PetriNetUnfolder]: 201/769 cut-off events. [2021-12-06 20:41:37,668 INFO L130 PetriNetUnfolder]: For 2097/2100 co-relation queries the response was YES. [2021-12-06 20:41:37,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 769 events. 201/769 cut-off events. For 2097/2100 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4480 event pairs, 79 based on Foata normal form. 5/771 useless extension candidates. Maximal degree in co-relation 2858. Up to 327 conditions per place. [2021-12-06 20:41:37,673 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 119 selfloop transitions, 21 changer transitions 18/199 dead transitions. [2021-12-06 20:41:37,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 199 transitions, 1703 flow [2021-12-06 20:41:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 607 transitions. [2021-12-06 20:41:37,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5558608058608059 [2021-12-06 20:41:37,675 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 607 transitions. [2021-12-06 20:41:37,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 607 transitions. [2021-12-06 20:41:37,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:37,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 607 transitions. [2021-12-06 20:41:37,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 46.69230769230769) internal successors, (607), 13 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,677 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,677 INFO L186 Difference]: Start difference. First operand has 175 places, 158 transitions, 1116 flow. Second operand 13 states and 607 transitions. [2021-12-06 20:41:37,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 199 transitions, 1703 flow [2021-12-06 20:41:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 199 transitions, 1635 flow, removed 12 selfloop flow, removed 13 redundant places. [2021-12-06 20:41:37,690 INFO L242 Difference]: Finished difference. Result has 174 places, 158 transitions, 1110 flow [2021-12-06 20:41:37,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1110, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2021-12-06 20:41:37,691 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 88 predicate places. [2021-12-06 20:41:37,691 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1110 flow [2021-12-06 20:41:37,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:37,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:37,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:41:37,691 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1003983112, now seen corresponding path program 14 times [2021-12-06 20:41:37,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:37,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741826673] [2021-12-06 20:41:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:37,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:37,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741826673] [2021-12-06 20:41:37,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741826673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:37,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:37,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:37,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792061432] [2021-12-06 20:41:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:37,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:37,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:37,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:37,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1110 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:37,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:37,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:37,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:38,124 INFO L129 PetriNetUnfolder]: 193/723 cut-off events. [2021-12-06 20:41:38,124 INFO L130 PetriNetUnfolder]: For 1877/1880 co-relation queries the response was YES. [2021-12-06 20:41:38,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 723 events. 193/723 cut-off events. For 1877/1880 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4053 event pairs, 75 based on Foata normal form. 10/730 useless extension candidates. Maximal degree in co-relation 2663. Up to 327 conditions per place. [2021-12-06 20:41:38,129 INFO L132 encePairwiseOnDemand]: 67/84 looper letters, 114 selfloop transitions, 15 changer transitions 38/208 dead transitions. [2021-12-06 20:41:38,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 208 transitions, 1761 flow [2021-12-06 20:41:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:41:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-06 20:41:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 646 transitions. [2021-12-06 20:41:38,131 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5493197278911565 [2021-12-06 20:41:38,131 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 646 transitions. [2021-12-06 20:41:38,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 646 transitions. [2021-12-06 20:41:38,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:38,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 646 transitions. [2021-12-06 20:41:38,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 46.142857142857146) internal successors, (646), 14 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,134 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,134 INFO L186 Difference]: Start difference. First operand has 174 places, 158 transitions, 1110 flow. Second operand 14 states and 646 transitions. [2021-12-06 20:41:38,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 208 transitions, 1761 flow [2021-12-06 20:41:38,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 208 transitions, 1678 flow, removed 9 selfloop flow, removed 15 redundant places. [2021-12-06 20:41:38,146 INFO L242 Difference]: Finished difference. Result has 173 places, 151 transitions, 969 flow [2021-12-06 20:41:38,146 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=969, PETRI_PLACES=173, PETRI_TRANSITIONS=151} [2021-12-06 20:41:38,147 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2021-12-06 20:41:38,147 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 151 transitions, 969 flow [2021-12-06 20:41:38,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:38,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:38,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:41:38,147 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash 980416090, now seen corresponding path program 15 times [2021-12-06 20:41:38,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:38,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103102521] [2021-12-06 20:41:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:38,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:38,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:38,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103102521] [2021-12-06 20:41:38,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103102521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:38,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:38,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:41:38,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933073034] [2021-12-06 20:41:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:38,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:41:38,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:41:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:41:38,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2021-12-06 20:41:38,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 151 transitions, 969 flow. Second operand has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:38,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2021-12-06 20:41:38,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:38,606 INFO L129 PetriNetUnfolder]: 175/633 cut-off events. [2021-12-06 20:41:38,606 INFO L130 PetriNetUnfolder]: For 1386/1389 co-relation queries the response was YES. [2021-12-06 20:41:38,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 633 events. 175/633 cut-off events. For 1386/1389 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3284 event pairs, 69 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 2284. Up to 327 conditions per place. [2021-12-06 20:41:38,610 INFO L132 encePairwiseOnDemand]: 68/84 looper letters, 84 selfloop transitions, 8 changer transitions 61/191 dead transitions. [2021-12-06 20:41:38,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 191 transitions, 1540 flow [2021-12-06 20:41:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:41:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 20:41:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 596 transitions. [2021-12-06 20:41:38,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2021-12-06 20:41:38,611 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 596 transitions. [2021-12-06 20:41:38,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 596 transitions. [2021-12-06 20:41:38,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:38,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 596 transitions. [2021-12-06 20:41:38,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 45.84615384615385) internal successors, (596), 13 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,613 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,614 INFO L186 Difference]: Start difference. First operand has 173 places, 151 transitions, 969 flow. Second operand 13 states and 596 transitions. [2021-12-06 20:41:38,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 191 transitions, 1540 flow [2021-12-06 20:41:38,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 191 transitions, 1439 flow, removed 29 selfloop flow, removed 17 redundant places. [2021-12-06 20:41:38,623 INFO L242 Difference]: Finished difference. Result has 161 places, 129 transitions, 707 flow [2021-12-06 20:41:38,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=707, PETRI_PLACES=161, PETRI_TRANSITIONS=129} [2021-12-06 20:41:38,623 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 75 predicate places. [2021-12-06 20:41:38,623 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 129 transitions, 707 flow [2021-12-06 20:41:38,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.76923076923077) internal successors, (543), 13 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:41:38,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:41:38,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:41:38,624 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATION, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE] === [2021-12-06 20:41:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:41:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1174442389, now seen corresponding path program 1 times [2021-12-06 20:41:38,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:41:38,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133776956] [2021-12-06 20:41:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:41:38,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:41:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:41:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:41:38,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:41:38,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133776956] [2021-12-06 20:41:38,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133776956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:41:38,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:41:38,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:41:38,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471716081] [2021-12-06 20:41:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:41:38,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:41:38,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:41:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:41:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:41:38,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 84 [2021-12-06 20:41:38,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 129 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:41:38,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 84 [2021-12-06 20:41:38,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:41:38,802 INFO L129 PetriNetUnfolder]: 1/108 cut-off events. [2021-12-06 20:41:38,802 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2021-12-06 20:41:38,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 108 events. 1/108 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 1 based on Foata normal form. 8/116 useless extension candidates. Maximal degree in co-relation 249. Up to 16 conditions per place. [2021-12-06 20:41:38,803 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2021-12-06 20:41:38,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 79 transitions, 319 flow [2021-12-06 20:41:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:41:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-06 20:41:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 364 transitions. [2021-12-06 20:41:38,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-12-06 20:41:38,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 364 transitions. [2021-12-06 20:41:38,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 364 transitions. [2021-12-06 20:41:38,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:41:38,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 364 transitions. [2021-12-06 20:41:38,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 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) [2021-12-06 20:41:38,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,805 INFO L186 Difference]: Start difference. First operand has 161 places, 129 transitions, 707 flow. Second operand 6 states and 364 transitions. [2021-12-06 20:41:38,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 79 transitions, 319 flow [2021-12-06 20:41:38,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 79 transitions, 212 flow, removed 21 selfloop flow, removed 42 redundant places. [2021-12-06 20:41:38,806 INFO L242 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2021-12-06 20:41:38,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2021-12-06 20:41:38,807 INFO L334 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2021-12-06 20:41:38,807 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2021-12-06 20:41:38,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.42857142857143) internal successors, (416), 7 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:41:38,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 4 remaining) [2021-12-06 20:41:38,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 20:41:38,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2021-12-06 20:41:38,809 INFO L764 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2021-12-06 20:41:38,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:41:38,812 INFO L732 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1, 1] [2021-12-06 20:41:38,815 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 20:41:38,815 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:41:38,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:41:38 BasicIcfg [2021-12-06 20:41:38,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:41:38,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:41:38,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:41:38,818 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:41:38,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:41:27" (3/4) ... [2021-12-06 20:41:38,819 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 20:41:38,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-06 20:41:38,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-06 20:41:38,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-06 20:41:38,828 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 20:41:38,855 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 20:41:38,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:41:38,856 INFO L158 Benchmark]: Toolchain (without parser) took 11698.98ms. Allocated memory was 109.1MB in the beginning and 201.3MB in the end (delta: 92.3MB). Free memory was 64.8MB in the beginning and 143.8MB in the end (delta: -78.9MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,856 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:41:38,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.23ms. Allocated memory is still 109.1MB. Free memory was 64.6MB in the beginning and 65.8MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.86ms. Allocated memory is still 109.1MB. Free memory was 65.8MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,856 INFO L158 Benchmark]: Boogie Preprocessor took 22.39ms. Allocated memory is still 109.1MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,857 INFO L158 Benchmark]: RCFGBuilder took 276.41ms. Allocated memory is still 109.1MB. Free memory was 62.0MB in the beginning and 49.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,857 INFO L158 Benchmark]: TraceAbstraction took 10943.38ms. Allocated memory was 109.1MB in the beginning and 201.3MB in the end (delta: 92.3MB). Free memory was 49.0MB in the beginning and 146.9MB in the end (delta: -97.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:41:38,857 INFO L158 Benchmark]: Witness Printer took 37.68ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 20:41:38,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.23ms. Allocated memory is still 109.1MB. Free memory was 64.6MB in the beginning and 65.8MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.86ms. Allocated memory is still 109.1MB. Free memory was 65.8MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.39ms. Allocated memory is still 109.1MB. Free memory was 63.6MB in the beginning and 62.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.41ms. Allocated memory is still 109.1MB. Free memory was 62.0MB in the beginning and 49.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10943.38ms. Allocated memory was 109.1MB in the beginning and 201.3MB in the end (delta: 92.3MB). Free memory was 49.0MB in the beginning and 146.9MB in the end (delta: -97.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.68ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 999]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 994]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2651 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2651 mSDsluCounter, 1754 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1331 mSDsCounter, 632 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7280 IncrementalHoareTripleChecker+Invalid, 7912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 632 mSolverCounterUnsat, 467 mSDtfsCounter, 7280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1995occurred in iteration=6, InterpolantAutomatonStates: 235, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1161 NumberOfCodeBlocks, 1161 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1142 ConstructedInterpolants, 0 QuantifiedInterpolants, 8241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 20:41:38,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c83ed3c7-5a15-4e5d-8ff9-a8fa9bb08ba6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE