./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:50:37,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:50:37,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:50:37,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:50:37,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:50:37,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:50:37,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:50:37,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:50:37,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:50:37,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:50:37,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:50:37,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:50:37,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:50:37,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:50:37,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:50:37,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:50:37,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:50:37,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:50:37,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:50:37,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:50:37,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:50:37,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:50:37,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:50:37,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:50:37,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:50:37,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:50:37,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:50:37,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:50:37,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:50:37,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:50:37,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:50:37,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:50:37,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:50:37,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:50:37,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:50:37,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:50:37,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:50:37,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:50:37,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:50:37,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:50:37,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:50:37,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:50:37,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:50:37,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:50:37,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:50:37,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:50:37,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:50:37,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:50:37,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:50:37,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:50:37,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:50:37,084 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:50:37,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:50:37,085 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:50:37,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:50:37,086 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:50:37,087 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:50:37,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:50:37,087 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:50:37,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:50:37,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:50:37,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:50:37,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:50:37,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:37,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:50:37,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:50:37,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:50:37,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:50:37,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:50:37,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:50:37,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:50:37,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:50:37,089 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-04-18 15:50:37,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:50:37,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:50:37,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:50:37,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:50:37,325 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:50:37,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2022-04-18 15:50:37,374 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f390d4508/e6ce713a089d406482bd68c3c31c93f6/FLAG560781bc9 [2022-04-18 15:50:37,815 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:50:37,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2022-04-18 15:50:37,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f390d4508/e6ce713a089d406482bd68c3c31c93f6/FLAG560781bc9 [2022-04-18 15:50:37,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f390d4508/e6ce713a089d406482bd68c3c31c93f6 [2022-04-18 15:50:37,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:50:37,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:50:37,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:37,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:50:37,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:50:37,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:37" (1/1) ... [2022-04-18 15:50:37,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599717d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:37, skipping insertion in model container [2022-04-18 15:50:37,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:37" (1/1) ... [2022-04-18 15:50:37,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:50:37,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:50:38,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-04-18 15:50:38,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:38,240 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:50:38,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-04-18 15:50:38,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:38,318 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:50:38,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38 WrapperNode [2022-04-18 15:50:38,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:38,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:38,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:50:38,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:50:38,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,376 INFO L137 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 310 [2022-04-18 15:50:38,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:38,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:50:38,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:50:38,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:50:38,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:50:38,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:50:38,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:50:38,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:50:38,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (1/1) ... [2022-04-18 15:50:38,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:38,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:50:38,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:50:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:50:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 15:50:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 15:50:38,515 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 15:50:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 15:50:38,516 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:50:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 15:50:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:50:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:50:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:50:38,518 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:50:38,671 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:50:38,672 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:50:39,023 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:50:39,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:50:39,031 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-04-18 15:50:39,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:39 BoogieIcfgContainer [2022-04-18 15:50:39,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:50:39,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:50:39,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:50:39,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:50:39,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:50:37" (1/3) ... [2022-04-18 15:50:39,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb95f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:39, skipping insertion in model container [2022-04-18 15:50:39,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:38" (2/3) ... [2022-04-18 15:50:39,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb95f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:39, skipping insertion in model container [2022-04-18 15:50:39,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:39" (3/3) ... [2022-04-18 15:50:39,039 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-04-18 15:50:39,050 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:50:39,050 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:50:39,050 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-04-18 15:50:39,050 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:50:39,201 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:50:39,253 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:39,259 INFO L340 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 [2022-04-18 15:50:39,260 INFO L341 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-04-18 15:50:39,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 327 places, 345 transitions, 712 flow [2022-04-18 15:50:39,427 INFO L129 PetriNetUnfolder]: 52/623 cut-off events. [2022-04-18 15:50:39,428 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-04-18 15:50:39,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 623 events. 52/623 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2798 event pairs, 0 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 310. Up to 8 conditions per place. [2022-04-18 15:50:39,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 345 transitions, 712 flow [2022-04-18 15:50:39,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 345 transitions, 712 flow [2022-04-18 15:50:39,459 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2022-04-18 15:50:39,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:39,459 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:39,460 INFO L255 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] [2022-04-18 15:50:39,460 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1487042024, now seen corresponding path program 1 times [2022-04-18 15:50:39,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901096522] [2022-04-18 15:50:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:39,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:39,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901096522] [2022-04-18 15:50:39,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901096522] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:39,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:39,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439198694] [2022-04-18 15:50:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:39,688 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:39,722 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 345 [2022-04-18 15:50:39,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 345 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:39,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 345 [2022-04-18 15:50:39,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:39,992 INFO L129 PetriNetUnfolder]: 49/1160 cut-off events. [2022-04-18 15:50:39,992 INFO L130 PetriNetUnfolder]: For 96/108 co-relation queries the response was YES. [2022-04-18 15:50:39,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 1160 events. 49/1160 cut-off events. For 96/108 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6081 event pairs, 24 based on Foata normal form. 92/1128 useless extension candidates. Maximal degree in co-relation 805. Up to 79 conditions per place. [2022-04-18 15:50:40,001 INFO L132 encePairwiseOnDemand]: 326/345 looper letters, 18 selfloop transitions, 2 changer transitions 0/327 dead transitions. [2022-04-18 15:50:40,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 327 transitions, 716 flow [2022-04-18 15:50:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 958 transitions. [2022-04-18 15:50:40,018 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9256038647342996 [2022-04-18 15:50:40,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 958 transitions. [2022-04-18 15:50:40,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 958 transitions. [2022-04-18 15:50:40,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:40,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 958 transitions. [2022-04-18 15:50:40,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,037 INFO L186 Difference]: Start difference. First operand has 327 places, 345 transitions, 712 flow. Second operand 3 states and 958 transitions. [2022-04-18 15:50:40,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 327 transitions, 716 flow [2022-04-18 15:50:40,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 327 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:40,049 INFO L242 Difference]: Finished difference. Result has 327 places, 327 transitions, 680 flow [2022-04-18 15:50:40,051 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=327, PETRI_TRANSITIONS=327} [2022-04-18 15:50:40,054 INFO L335 CegarLoopForPetriNet]: 327 programPoint places, 0 predicate places. [2022-04-18 15:50:40,054 INFO L478 AbstractCegarLoop]: Abstraction has has 327 places, 327 transitions, 680 flow [2022-04-18 15:50:40,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,055 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:40,055 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:40,055 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:50:40,056 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1272635081, now seen corresponding path program 1 times [2022-04-18 15:50:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:40,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807062313] [2022-04-18 15:50:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:40,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807062313] [2022-04-18 15:50:40,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807062313] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:40,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:40,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040342614] [2022-04-18 15:50:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:40,117 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:40,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:40,119 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 345 [2022-04-18 15:50:40,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 327 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:40,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 345 [2022-04-18 15:50:40,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:40,301 INFO L129 PetriNetUnfolder]: 38/1063 cut-off events. [2022-04-18 15:50:40,302 INFO L130 PetriNetUnfolder]: For 81/91 co-relation queries the response was YES. [2022-04-18 15:50:40,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 1063 events. 38/1063 cut-off events. For 81/91 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5274 event pairs, 14 based on Foata normal form. 0/964 useless extension candidates. Maximal degree in co-relation 1105. Up to 51 conditions per place. [2022-04-18 15:50:40,312 INFO L132 encePairwiseOnDemand]: 341/345 looper letters, 13 selfloop transitions, 1 changer transitions 0/324 dead transitions. [2022-04-18 15:50:40,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 324 transitions, 702 flow [2022-04-18 15:50:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2022-04-18 15:50:40,315 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.914975845410628 [2022-04-18 15:50:40,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 947 transitions. [2022-04-18 15:50:40,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 947 transitions. [2022-04-18 15:50:40,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:40,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 947 transitions. [2022-04-18 15:50:40,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,320 INFO L186 Difference]: Start difference. First operand has 327 places, 327 transitions, 680 flow. Second operand 3 states and 947 transitions. [2022-04-18 15:50:40,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 324 transitions, 702 flow [2022-04-18 15:50:40,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 324 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:40,329 INFO L242 Difference]: Finished difference. Result has 324 places, 324 transitions, 672 flow [2022-04-18 15:50:40,330 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=324, PETRI_TRANSITIONS=324} [2022-04-18 15:50:40,331 INFO L335 CegarLoopForPetriNet]: 327 programPoint places, -3 predicate places. [2022-04-18 15:50:40,331 INFO L478 AbstractCegarLoop]: Abstraction has has 324 places, 324 transitions, 672 flow [2022-04-18 15:50:40,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:40,332 INFO L255 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] [2022-04-18 15:50:40,332 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:50:40,333 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1382513203, now seen corresponding path program 1 times [2022-04-18 15:50:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:40,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613538816] [2022-04-18 15:50:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:40,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613538816] [2022-04-18 15:50:40,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613538816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:40,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:40,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:50:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919914439] [2022-04-18 15:50:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:40,513 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:40,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:40,516 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 345 [2022-04-18 15:50:40,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 324 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:40,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 345 [2022-04-18 15:50:40,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:48,475 INFO L129 PetriNetUnfolder]: 34434/75502 cut-off events. [2022-04-18 15:50:48,475 INFO L130 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2022-04-18 15:50:48,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128207 conditions, 75502 events. 34434/75502 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 799761 event pairs, 33402 based on Foata normal form. 0/65269 useless extension candidates. Maximal degree in co-relation 128157. Up to 52452 conditions per place. [2022-04-18 15:50:48,972 INFO L132 encePairwiseOnDemand]: 339/345 looper letters, 102 selfloop transitions, 5 changer transitions 0/323 dead transitions. [2022-04-18 15:50:48,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 323 transitions, 884 flow [2022-04-18 15:50:48,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:50:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:50:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1428 transitions. [2022-04-18 15:50:48,977 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6898550724637681 [2022-04-18 15:50:48,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1428 transitions. [2022-04-18 15:50:48,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1428 transitions. [2022-04-18 15:50:48,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:48,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1428 transitions. [2022-04-18 15:50:48,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:48,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:48,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:48,983 INFO L186 Difference]: Start difference. First operand has 324 places, 324 transitions, 672 flow. Second operand 6 states and 1428 transitions. [2022-04-18 15:50:48,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 323 transitions, 884 flow [2022-04-18 15:50:48,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 323 transitions, 883 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:48,996 INFO L242 Difference]: Finished difference. Result has 327 places, 323 transitions, 679 flow [2022-04-18 15:50:48,996 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=327, PETRI_TRANSITIONS=323} [2022-04-18 15:50:48,998 INFO L335 CegarLoopForPetriNet]: 327 programPoint places, 0 predicate places. [2022-04-18 15:50:48,998 INFO L478 AbstractCegarLoop]: Abstraction has has 327 places, 323 transitions, 679 flow [2022-04-18 15:50:48,999 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:48,999 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:48,999 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:49,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:50:49,000 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:49,001 INFO L85 PathProgramCache]: Analyzing trace with hash -952656655, now seen corresponding path program 1 times [2022-04-18 15:50:49,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:49,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430523371] [2022-04-18 15:50:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:49,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:49,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:49,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430523371] [2022-04-18 15:50:49,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430523371] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:49,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:49,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:50:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663914006] [2022-04-18 15:50:49,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:49,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:49,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:49,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:49,149 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 345 [2022-04-18 15:50:49,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 323 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:49,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:49,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 345 [2022-04-18 15:50:49,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:56,498 INFO L129 PetriNetUnfolder]: 34434/75501 cut-off events. [2022-04-18 15:50:56,498 INFO L130 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-04-18 15:50:56,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128210 conditions, 75501 events. 34434/75501 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 799684 event pairs, 33402 based on Foata normal form. 0/65269 useless extension candidates. Maximal degree in co-relation 128160. Up to 52451 conditions per place. [2022-04-18 15:50:56,967 INFO L132 encePairwiseOnDemand]: 339/345 looper letters, 101 selfloop transitions, 5 changer transitions 0/322 dead transitions. [2022-04-18 15:50:56,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 322 transitions, 889 flow [2022-04-18 15:50:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:50:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:50:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2022-04-18 15:50:56,970 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6893719806763285 [2022-04-18 15:50:56,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2022-04-18 15:50:56,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2022-04-18 15:50:56,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:56,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2022-04-18 15:50:56,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:56,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:56,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 345.0) internal successors, (2415), 7 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:56,981 INFO L186 Difference]: Start difference. First operand has 327 places, 323 transitions, 679 flow. Second operand 6 states and 1427 transitions. [2022-04-18 15:50:56,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 322 transitions, 889 flow [2022-04-18 15:50:56,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 322 transitions, 879 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:50:56,996 INFO L242 Difference]: Finished difference. Result has 326 places, 322 transitions, 677 flow [2022-04-18 15:50:56,997 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=677, PETRI_PLACES=326, PETRI_TRANSITIONS=322} [2022-04-18 15:50:56,998 INFO L335 CegarLoopForPetriNet]: 327 programPoint places, -1 predicate places. [2022-04-18 15:50:56,999 INFO L478 AbstractCegarLoop]: Abstraction has has 326 places, 322 transitions, 677 flow [2022-04-18 15:50:56,999 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:56,999 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:57,000 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:57,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:50:57,000 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1870969522, now seen corresponding path program 1 times [2022-04-18 15:50:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:57,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053220080] [2022-04-18 15:50:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:57,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053220080] [2022-04-18 15:50:57,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053220080] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:57,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:57,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844891710] [2022-04-18 15:50:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:57,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:57,089 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 345 [2022-04-18 15:50:57,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 322 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:57,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 345 [2022-04-18 15:50:57,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:57,147 INFO L129 PetriNetUnfolder]: 9/433 cut-off events. [2022-04-18 15:50:57,148 INFO L130 PetriNetUnfolder]: For 34/70 co-relation queries the response was YES. [2022-04-18 15:50:57,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 433 events. 9/433 cut-off events. For 34/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1140 event pairs, 0 based on Foata normal form. 2/398 useless extension candidates. Maximal degree in co-relation 426. Up to 15 conditions per place. [2022-04-18 15:50:57,154 INFO L132 encePairwiseOnDemand]: 342/345 looper letters, 13 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2022-04-18 15:50:57,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 324 transitions, 711 flow [2022-04-18 15:50:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-04-18 15:50:57,156 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9285024154589372 [2022-04-18 15:50:57,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-04-18 15:50:57,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-04-18 15:50:57,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:57,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-04-18 15:50:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,162 INFO L186 Difference]: Start difference. First operand has 326 places, 322 transitions, 677 flow. Second operand 3 states and 961 transitions. [2022-04-18 15:50:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 324 transitions, 711 flow [2022-04-18 15:50:57,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 324 transitions, 701 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:50:57,167 INFO L242 Difference]: Finished difference. Result has 324 places, 322 transitions, 675 flow [2022-04-18 15:50:57,167 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=675, PETRI_PLACES=324, PETRI_TRANSITIONS=322} [2022-04-18 15:50:57,169 INFO L335 CegarLoopForPetriNet]: 327 programPoint places, -3 predicate places. [2022-04-18 15:50:57,169 INFO L478 AbstractCegarLoop]: Abstraction has has 324 places, 322 transitions, 675 flow [2022-04-18 15:50:57,170 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,170 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:57,170 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:57,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:50:57,171 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 15:50:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 982598802, now seen corresponding path program 1 times [2022-04-18 15:50:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:57,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220695368] [2022-04-18 15:50:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:57,205 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:57,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:57,255 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:57,255 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-04-18 15:50:57,257 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-04-18 15:50:57,258 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-04-18 15:50:57,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-04-18 15:50:57,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-04-18 15:50:57,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2022-04-18 15:50:57,262 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-04-18 15:50:57,263 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-04-18 15:50:57,264 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-04-18 15:50:57,265 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-04-18 15:50:57,265 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-04-18 15:50:57,265 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-04-18 15:50:57,265 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-04-18 15:50:57,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:50:57,268 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:50:57,269 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:57,269 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:50:57,343 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 15:50:57,345 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:57,347 INFO L340 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 [2022-04-18 15:50:57,348 INFO L341 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-04-18 15:50:57,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 521 places, 554 transitions, 1156 flow [2022-04-18 15:50:57,726 INFO L129 PetriNetUnfolder]: 191/1805 cut-off events. [2022-04-18 15:50:57,727 INFO L130 PetriNetUnfolder]: For 72/120 co-relation queries the response was YES. [2022-04-18 15:50:57,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1805 events. 191/1805 cut-off events. For 72/120 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12501 event pairs, 2 based on Foata normal form. 0/1517 useless extension candidates. Maximal degree in co-relation 1122. Up to 32 conditions per place. [2022-04-18 15:50:57,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 521 places, 554 transitions, 1156 flow [2022-04-18 15:50:57,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 521 places, 554 transitions, 1156 flow [2022-04-18 15:50:57,783 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2022-04-18 15:50:57,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:57,783 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:57,783 INFO L255 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] [2022-04-18 15:50:57,783 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-04-18 15:50:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -922081216, now seen corresponding path program 1 times [2022-04-18 15:50:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046509074] [2022-04-18 15:50:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:57,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046509074] [2022-04-18 15:50:57,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046509074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:57,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:57,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380151361] [2022-04-18 15:50:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:57,804 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:57,806 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 554 [2022-04-18 15:50:57,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 554 transitions, 1156 flow. Second operand has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:57,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:57,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 554 [2022-04-18 15:50:57,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:02,974 INFO L129 PetriNetUnfolder]: 3136/30409 cut-off events. [2022-04-18 15:51:02,974 INFO L130 PetriNetUnfolder]: For 4507/4867 co-relation queries the response was YES. [2022-04-18 15:51:03,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35905 conditions, 30409 events. 3136/30409 cut-off events. For 4507/4867 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 417094 event pairs, 2284 based on Foata normal form. 3470/29981 useless extension candidates. Maximal degree in co-relation 18879. Up to 3939 conditions per place. [2022-04-18 15:51:03,396 INFO L132 encePairwiseOnDemand]: 523/554 looper letters, 30 selfloop transitions, 2 changer transitions 0/523 dead transitions. [2022-04-18 15:51:03,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 523 transitions, 1158 flow [2022-04-18 15:51:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1534 transitions. [2022-04-18 15:51:03,402 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9229843561973526 [2022-04-18 15:51:03,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1534 transitions. [2022-04-18 15:51:03,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1534 transitions. [2022-04-18 15:51:03,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:03,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1534 transitions. [2022-04-18 15:51:03,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 511.3333333333333) internal successors, (1534), 3 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:03,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:03,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:03,409 INFO L186 Difference]: Start difference. First operand has 521 places, 554 transitions, 1156 flow. Second operand 3 states and 1534 transitions. [2022-04-18 15:51:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 523 transitions, 1158 flow [2022-04-18 15:51:03,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 523 transitions, 1158 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:03,429 INFO L242 Difference]: Finished difference. Result has 520 places, 523 transitions, 1098 flow [2022-04-18 15:51:03,430 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1098, PETRI_PLACES=520, PETRI_TRANSITIONS=523} [2022-04-18 15:51:03,431 INFO L335 CegarLoopForPetriNet]: 521 programPoint places, -1 predicate places. [2022-04-18 15:51:03,431 INFO L478 AbstractCegarLoop]: Abstraction has has 520 places, 523 transitions, 1098 flow [2022-04-18 15:51:03,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 492.3333333333333) internal successors, (1477), 3 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:03,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:03,432 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:03,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:51:03,432 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-04-18 15:51:03,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:03,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1832874737, now seen corresponding path program 1 times [2022-04-18 15:51:03,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:03,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377648066] [2022-04-18 15:51:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:03,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:03,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377648066] [2022-04-18 15:51:03,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377648066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:03,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:03,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:51:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698508507] [2022-04-18 15:51:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:03,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:03,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:03,453 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 554 [2022-04-18 15:51:03,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 523 transitions, 1098 flow. Second operand has 3 states, 3 states have (on average 495.3333333333333) internal successors, (1486), 3 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:03,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:03,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 554 [2022-04-18 15:51:03,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:06,909 INFO L129 PetriNetUnfolder]: 1430/19989 cut-off events. [2022-04-18 15:51:06,909 INFO L130 PetriNetUnfolder]: For 2343/2517 co-relation queries the response was YES. [2022-04-18 15:51:07,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 19989 events. 1430/19989 cut-off events. For 2343/2517 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 254225 event pairs, 853 based on Foata normal form. 0/18070 useless extension candidates. Maximal degree in co-relation 22420. Up to 1658 conditions per place. [2022-04-18 15:51:07,170 INFO L132 encePairwiseOnDemand]: 548/554 looper letters, 23 selfloop transitions, 1 changer transitions 0/518 dead transitions. [2022-04-18 15:51:07,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 518 transitions, 1136 flow [2022-04-18 15:51:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1511 transitions. [2022-04-18 15:51:07,174 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9091456077015644 [2022-04-18 15:51:07,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1511 transitions. [2022-04-18 15:51:07,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1511 transitions. [2022-04-18 15:51:07,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:07,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1511 transitions. [2022-04-18 15:51:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 503.6666666666667) internal successors, (1511), 3 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:07,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:07,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:07,180 INFO L186 Difference]: Start difference. First operand has 520 places, 523 transitions, 1098 flow. Second operand 3 states and 1511 transitions. [2022-04-18 15:51:07,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 518 transitions, 1136 flow [2022-04-18 15:51:07,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 518 transitions, 1132 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:51:07,188 INFO L242 Difference]: Finished difference. Result has 515 places, 518 transitions, 1086 flow [2022-04-18 15:51:07,189 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1086, PETRI_PLACES=515, PETRI_TRANSITIONS=518} [2022-04-18 15:51:07,189 INFO L335 CegarLoopForPetriNet]: 521 programPoint places, -6 predicate places. [2022-04-18 15:51:07,189 INFO L478 AbstractCegarLoop]: Abstraction has has 515 places, 518 transitions, 1086 flow [2022-04-18 15:51:07,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 495.3333333333333) internal successors, (1486), 3 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:07,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:07,190 INFO L255 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] [2022-04-18 15:51:07,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:51:07,190 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-04-18 15:51:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash -948989491, now seen corresponding path program 1 times [2022-04-18 15:51:07,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:07,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464662725] [2022-04-18 15:51:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:07,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464662725] [2022-04-18 15:51:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464662725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:07,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:07,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:07,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358150421] [2022-04-18 15:51:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:07,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:07,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:07,247 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 554 [2022-04-18 15:51:07,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 518 transitions, 1086 flow. Second operand has 6 states, 6 states have (on average 339.5) internal successors, (2037), 6 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:07,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:07,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 554 [2022-04-18 15:51:07,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand