./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 21:09:51,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:09:51,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:09:51,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:09:51,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:09:51,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:09:51,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:09:51,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:09:51,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:09:51,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:09:51,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:09:51,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:09:51,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:09:51,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:09:51,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:09:51,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:09:51,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:09:51,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:09:51,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:09:51,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:09:51,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:09:51,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:09:51,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:09:51,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:09:51,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:09:51,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:09:51,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:09:51,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:09:51,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:09:51,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:09:51,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:09:51,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:09:51,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:09:51,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:09:51,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:09:51,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:09:51,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:09:51,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:09:51,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:09:51,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:09:51,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:09:51,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:09:51,836 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:09:51,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:09:51,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:09:51,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:09:51,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:09:51,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:09:51,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:09:51,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:09:51,839 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:09:51,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:09:51,841 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:09:51,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:09:51,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:09:51,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:09:51,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:09:51,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:09:51,843 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:09:51,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:09:51,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:09:51,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:09:51,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:09:51,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:09:51,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:09:51,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:09:51,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:09:51,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:09:51,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:09:51,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:09:51,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:09:51,845 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:09:51,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:09:51,846 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:09:51,846 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:09:52,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:09:52,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:09:52,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:09:52,165 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:09:52,166 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:09:52,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-31 21:09:53,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:09:53,512 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:09:53,513 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-31 21:09:53,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9496474/8250f4ff6a184204adb90cd85f22ece1/FLAG3d02e40db [2023-08-31 21:09:53,554 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9496474/8250f4ff6a184204adb90cd85f22ece1 [2023-08-31 21:09:53,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:09:53,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:09:53,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:09:53,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:09:53,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:09:53,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:09:53" (1/1) ... [2023-08-31 21:09:53,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18171c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:53, skipping insertion in model container [2023-08-31 21:09:53,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:09:53" (1/1) ... [2023-08-31 21:09:53,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:09:53,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:09:53,943 WARN L247 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_86-lists_racing.i[47038,47051] [2023-08-31 21:09:53,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:09:54,099 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:09:54,138 WARN L247 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_86-lists_racing.i[47038,47051] [2023-08-31 21:09:54,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:09:54,212 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:09:54,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54 WrapperNode [2023-08-31 21:09:54,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:09:54,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:09:54,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:09:54,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:09:54,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,276 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 345 [2023-08-31 21:09:54,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:09:54,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:09:54,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:09:54,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:09:54,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,335 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:09:54,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:09:54,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:09:54,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:09:54,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (1/1) ... [2023-08-31 21:09:54,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:09:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:09:54,378 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) [2023-08-31 21:09:54,392 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 [2023-08-31 21:09:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:09:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 21:09:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 21:09:54,411 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 21:09:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:09:54,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 21:09:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:09:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:09:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:09:54,413 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 21:09:54,625 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:09:54,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:09:55,105 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:09:55,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:09:55,113 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-31 21:09:55,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:09:55 BoogieIcfgContainer [2023-08-31 21:09:55,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:09:55,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:09:55,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:09:55,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:09:55,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:09:53" (1/3) ... [2023-08-31 21:09:55,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b757eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:09:55, skipping insertion in model container [2023-08-31 21:09:55,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:09:54" (2/3) ... [2023-08-31 21:09:55,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b757eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:09:55, skipping insertion in model container [2023-08-31 21:09:55,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:09:55" (3/3) ... [2023-08-31 21:09:55,139 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-31 21:09:55,146 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:09:55,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:09:55,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-31 21:09:55,155 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:09:55,262 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 21:09:55,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 364 transitions, 750 flow [2023-08-31 21:09:55,524 INFO L130 PetriNetUnfolder]: 54/653 cut-off events. [2023-08-31 21:09:55,525 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-31 21:09:55,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 653 events. 54/653 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3054 event pairs, 0 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 327. Up to 8 conditions per place. [2023-08-31 21:09:55,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 364 transitions, 750 flow [2023-08-31 21:09:55,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 359 transitions, 734 flow [2023-08-31 21:09:55,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:09:55,567 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 341 places, 359 transitions, 734 flow [2023-08-31 21:09:55,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 341 places, 359 transitions, 734 flow [2023-08-31 21:09:55,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 359 transitions, 734 flow [2023-08-31 21:09:55,693 INFO L130 PetriNetUnfolder]: 50/638 cut-off events. [2023-08-31 21:09:55,694 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2023-08-31 21:09:55,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 638 events. 50/638 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2750 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 315. Up to 8 conditions per place. [2023-08-31 21:09:55,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 45128 [2023-08-31 21:10:10,508 WARN L222 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:20,476 WARN L222 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 148 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:22,338 INFO L134 LiptonReduction]: Checked pairs total: 193601 [2023-08-31 21:10:22,338 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-31 21:10:22,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:10:22,354 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76870809, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:10:22,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 21:10:22,360 INFO L130 PetriNetUnfolder]: 1/30 cut-off events. [2023-08-31 21:10:22,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:10:22,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:22,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-31 21:10:22,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:10:22,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:22,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1805794425, now seen corresponding path program 1 times [2023-08-31 21:10:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188589308] [2023-08-31 21:10:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:10:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:10:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188589308] [2023-08-31 21:10:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188589308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:10:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:10:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:10:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907547067] [2023-08-31 21:10:22,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:10:22,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:10:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:10:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:10:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:10:22,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 584 [2023-08-31 21:10:22,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 161 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:22,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:10:22,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 584 [2023-08-31 21:10:22,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:10:25,543 INFO L130 PetriNetUnfolder]: 7353/19141 cut-off events. [2023-08-31 21:10:25,544 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-31 21:10:25,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30565 conditions, 19141 events. 7353/19141 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 183602 event pairs, 6974 based on Foata normal form. 656/17508 useless extension candidates. Maximal degree in co-relation 28924. Up to 11326 conditions per place. [2023-08-31 21:10:25,615 INFO L137 encePairwiseOnDemand]: 570/584 looper letters, 50 selfloop transitions, 2 changer transitions 21/150 dead transitions. [2023-08-31 21:10:25,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 150 transitions, 438 flow [2023-08-31 21:10:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:10:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:10:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2023-08-31 21:10:25,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170091324200914 [2023-08-31 21:10:25,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2023-08-31 21:10:25,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2023-08-31 21:10:25,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:10:25,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2023-08-31 21:10:25,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:25,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:25,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:25,650 INFO L175 Difference]: Start difference. First operand has 150 places, 161 transitions, 338 flow. Second operand 3 states and 1081 transitions. [2023-08-31 21:10:25,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 150 transitions, 438 flow [2023-08-31 21:10:25,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 150 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:10:25,658 INFO L231 Difference]: Finished difference. Result has 152 places, 129 transitions, 278 flow [2023-08-31 21:10:25,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=152, PETRI_TRANSITIONS=129} [2023-08-31 21:10:25,664 INFO L281 CegarLoopForPetriNet]: 150 programPoint places, 2 predicate places. [2023-08-31 21:10:25,664 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 129 transitions, 278 flow [2023-08-31 21:10:25,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:25,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:25,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-31 21:10:25,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:10:25,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:10:25,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1140660114, now seen corresponding path program 1 times [2023-08-31 21:10:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:25,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782462842] [2023-08-31 21:10:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:25,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:10:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:10:25,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782462842] [2023-08-31 21:10:25,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782462842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:10:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576872799] [2023-08-31 21:10:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:25,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:10:25,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:10:25,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:10:25,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 21:10:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:10:26,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 21:10:26,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:10:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:26,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 21:10:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576872799] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 21:10:26,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 21:10:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-31 21:10:26,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995592107] [2023-08-31 21:10:26,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 21:10:26,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 21:10:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:10:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 21:10:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-31 21:10:26,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 584 [2023-08-31 21:10:26,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 129 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 336.57142857142856) internal successors, (2356), 7 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:26,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:10:26,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 584 [2023-08-31 21:10:26,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:10:27,286 INFO L130 PetriNetUnfolder]: 3003/8255 cut-off events. [2023-08-31 21:10:27,286 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-31 21:10:27,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13084 conditions, 8255 events. 3003/8255 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 69050 event pairs, 2858 based on Foata normal form. 0/7388 useless extension candidates. Maximal degree in co-relation 13071. Up to 4768 conditions per place. [2023-08-31 21:10:27,324 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 50 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2023-08-31 21:10:27,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 400 flow [2023-08-31 21:10:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:10:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:10:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2068 transitions. [2023-08-31 21:10:27,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901826484018264 [2023-08-31 21:10:27,329 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2068 transitions. [2023-08-31 21:10:27,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2068 transitions. [2023-08-31 21:10:27,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:10:27,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2068 transitions. [2023-08-31 21:10:27,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.6666666666667) internal successors, (2068), 6 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:27,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:27,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:27,343 INFO L175 Difference]: Start difference. First operand has 152 places, 129 transitions, 278 flow. Second operand 6 states and 2068 transitions. [2023-08-31 21:10:27,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 400 flow [2023-08-31 21:10:27,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 132 transitions, 396 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 21:10:27,346 INFO L231 Difference]: Finished difference. Result has 140 places, 132 transitions, 310 flow [2023-08-31 21:10:27,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2023-08-31 21:10:27,348 INFO L281 CegarLoopForPetriNet]: 150 programPoint places, -10 predicate places. [2023-08-31 21:10:27,348 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 310 flow [2023-08-31 21:10:27,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 336.57142857142856) internal successors, (2356), 7 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:27,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:27,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-31 21:10:27,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 21:10:27,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:10:27,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:10:27,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:27,557 INFO L85 PathProgramCache]: Analyzing trace with hash -420264633, now seen corresponding path program 2 times [2023-08-31 21:10:27,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:27,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883257381] [2023-08-31 21:10:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:27,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:10:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:27,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:10:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883257381] [2023-08-31 21:10:27,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883257381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:10:27,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192312629] [2023-08-31 21:10:27,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 21:10:27,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:10:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:10:27,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:10:27,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 21:10:28,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 21:10:28,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 21:10:28,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 21:10:28,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:10:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:28,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 21:10:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192312629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 21:10:28,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 21:10:28,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-31 21:10:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116666779] [2023-08-31 21:10:28,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 21:10:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 21:10:28,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:10:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 21:10:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-31 21:10:28,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 584 [2023-08-31 21:10:28,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 310 flow. Second operand has 13 states, 13 states have (on average 336.3076923076923) internal successors, (4372), 13 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:28,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:10:28,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 584 [2023-08-31 21:10:28,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:10:29,742 INFO L130 PetriNetUnfolder]: 3003/8261 cut-off events. [2023-08-31 21:10:29,743 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-31 21:10:29,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13121 conditions, 8261 events. 3003/8261 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 69080 event pairs, 2858 based on Foata normal form. 6/7401 useless extension candidates. Maximal degree in co-relation 13062. Up to 4768 conditions per place. [2023-08-31 21:10:29,782 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 50 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2023-08-31 21:10:29,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 138 transitions, 468 flow [2023-08-31 21:10:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 21:10:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 21:10:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4087 transitions. [2023-08-31 21:10:29,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5831906392694064 [2023-08-31 21:10:29,791 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4087 transitions. [2023-08-31 21:10:29,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4087 transitions. [2023-08-31 21:10:29,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:10:29,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4087 transitions. [2023-08-31 21:10:29,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 340.5833333333333) internal successors, (4087), 12 states have internal predecessors, (4087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:29,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 584.0) internal successors, (7592), 13 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:29,816 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 584.0) internal successors, (7592), 13 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:29,816 INFO L175 Difference]: Start difference. First operand has 140 places, 132 transitions, 310 flow. Second operand 12 states and 4087 transitions. [2023-08-31 21:10:29,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 138 transitions, 468 flow [2023-08-31 21:10:29,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 138 transitions, 454 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-31 21:10:29,820 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 380 flow [2023-08-31 21:10:29,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=380, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2023-08-31 21:10:29,821 INFO L281 CegarLoopForPetriNet]: 150 programPoint places, 6 predicate places. [2023-08-31 21:10:29,821 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 380 flow [2023-08-31 21:10:29,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 336.3076923076923) internal successors, (4372), 13 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 21:10:29,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:29,824 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-31 21:10:29,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 21:10:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 21:10:30,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:10:30,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1952734233, now seen corresponding path program 3 times [2023-08-31 21:10:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88997741] [2023-08-31 21:10:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:10:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:10:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:10:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88997741] [2023-08-31 21:10:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88997741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:10:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730649228] [2023-08-31 21:10:30,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 21:10:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:10:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:10:30,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:10:30,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15