./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_72-funloop_hard_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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:26:13,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:26:13,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:26:13,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:26:13,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:26:13,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:26:13,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:26:13,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:26:13,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:26:13,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:26:13,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:26:13,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:26:13,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:26:13,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:26:13,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:26:13,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:26:13,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:26:13,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:26:13,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:26:13,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:26:13,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:26:13,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:26:13,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:26:13,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:26:13,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:26:13,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:26:13,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:26:13,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:26:13,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:26:13,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:26:13,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:26:13,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:26:13,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:26:13,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:26:13,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:26:13,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:26:13,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:26:13,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:26:13,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:26:13,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:26:13,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:26:13,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:26:13,216 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:26:13,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:26:13,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:26:13,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:26:13,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:26:13,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:26:13,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:26:13,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:26:13,225 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:26:13,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:26:13,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:26:13,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:26:13,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:26:13,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:26:13,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:26:13,229 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:26:13,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:26:13,229 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:26:13,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:26:13,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:26:13,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:26:13,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:26:13,592 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:26:13,592 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:26:13,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-29 18:26:14,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:26:15,114 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:26:15,125 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-08-29 18:26:15,149 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9569fb7/7f922aa54332435b98896dac6fc3afd9/FLAG25dcca516 [2023-08-29 18:26:15,161 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9569fb7/7f922aa54332435b98896dac6fc3afd9 [2023-08-29 18:26:15,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:26:15,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:26:15,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:26:15,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:26:15,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:26:15,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:15,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e9d7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15, skipping insertion in model container [2023-08-29 18:26:15,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:15,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:26:15,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:26:15,688 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_72-funloop_hard_racing.i[41323,41336] [2023-08-29 18:26:15,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:15,757 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:26:15,810 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_72-funloop_hard_racing.i[41323,41336] [2023-08-29 18:26:15,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:26:15,909 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:26:15,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15 WrapperNode [2023-08-29 18:26:15,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:26:15,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:15,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:26:15,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:26:15,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:15,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:15,996 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 342 [2023-08-29 18:26:15,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:26:16,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:26:16,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:26:16,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:26:16,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:26:16,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:26:16,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:26:16,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:26:16,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (1/1) ... [2023-08-29 18:26:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:26:16,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:16,114 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) [2023-08-29 18:26:16,119 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 [2023-08-29 18:26:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:26:16,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:26:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:26:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:26:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:26:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:26:16,149 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:26:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:26:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:26:16,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:26:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:26:16,152 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:26:16,283 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:26:16,285 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:26:16,815 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:26:16,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:26:16,825 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-08-29 18:26:16,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:16 BoogieIcfgContainer [2023-08-29 18:26:16,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:26:16,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:26:16,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:26:16,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:26:16,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:26:15" (1/3) ... [2023-08-29 18:26:16,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d897982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:16, skipping insertion in model container [2023-08-29 18:26:16,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:26:15" (2/3) ... [2023-08-29 18:26:16,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d897982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:26:16, skipping insertion in model container [2023-08-29 18:26:16,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:26:16" (3/3) ... [2023-08-29 18:26:16,848 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-08-29 18:26:16,856 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:26:16,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:26:16,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-29 18:26:16,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:26:16,988 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:26:17,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,219 INFO L130 PetriNetUnfolder]: 73/558 cut-off events. [2023-08-29 18:26:17,219 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:17,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 558 events. 73/558 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3018 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-29 18:26:17,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:17,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 351 transitions, 710 flow [2023-08-29 18:26:17,334 INFO L130 PetriNetUnfolder]: 73/558 cut-off events. [2023-08-29 18:26:17,334 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:17,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 558 events. 73/558 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3018 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 314. Up to 8 conditions per place. [2023-08-29 18:26:17,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 43452 [2023-08-29 18:26:20,532 INFO L134 LiptonReduction]: Checked pairs total: 155567 [2023-08-29 18:26:20,533 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-08-29 18:26:20,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:20,560 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;@7dd53984, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:20,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:26:20,566 INFO L130 PetriNetUnfolder]: 11/48 cut-off events. [2023-08-29 18:26:20,567 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:26:20,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:20,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:26:20,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:20,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2113474524, now seen corresponding path program 1 times [2023-08-29 18:26:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544540882] [2023-08-29 18:26:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:20,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544540882] [2023-08-29 18:26:20,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544540882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:20,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338318505] [2023-08-29 18:26:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:20,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:20,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 544 [2023-08-29 18:26:20,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 192 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:20,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:20,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 544 [2023-08-29 18:26:20,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:21,345 INFO L130 PetriNetUnfolder]: 822/2911 cut-off events. [2023-08-29 18:26:21,346 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:21,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 2911 events. 822/2911 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23522 event pairs, 684 based on Foata normal form. 329/2953 useless extension candidates. Maximal degree in co-relation 4281. Up to 1527 conditions per place. [2023-08-29 18:26:21,362 INFO L137 encePairwiseOnDemand]: 510/544 looper letters, 63 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-08-29 18:26:21,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1009 transitions. [2023-08-29 18:26:21,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182598039215687 [2023-08-29 18:26:21,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1009 transitions. [2023-08-29 18:26:21,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1009 transitions. [2023-08-29 18:26:21,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:21,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1009 transitions. [2023-08-29 18:26:21,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:21,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:21,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:21,409 INFO L175 Difference]: Start difference. First operand has 157 places, 192 transitions, 392 flow. Second operand 3 states and 1009 transitions. [2023-08-29 18:26:21,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 462 flow [2023-08-29 18:26:21,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:21,419 INFO L231 Difference]: Finished difference. Result has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:21,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=160, PETRI_TRANSITIONS=162} [2023-08-29 18:26:21,425 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 3 predicate places. [2023-08-29 18:26:21,425 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 162 transitions, 342 flow [2023-08-29 18:26:21,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:21,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:21,426 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:21,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:26:21,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:21,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1336189078, now seen corresponding path program 1 times [2023-08-29 18:26:21,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:21,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877506634] [2023-08-29 18:26:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877506634] [2023-08-29 18:26:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877506634] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842459342] [2023-08-29 18:26:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:21,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:21,546 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) [2023-08-29 18:26:21,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:26:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:21,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:21,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:21,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842459342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:21,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902322843] [2023-08-29 18:26:21,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:21,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:21,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 544 [2023-08-29 18:26:21,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:21,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:21,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 544 [2023-08-29 18:26:21,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:22,247 INFO L130 PetriNetUnfolder]: 822/2914 cut-off events. [2023-08-29 18:26:22,248 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 18:26:22,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4461 conditions, 2914 events. 822/2914 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23573 event pairs, 684 based on Foata normal form. 0/2627 useless extension candidates. Maximal degree in co-relation 4449. Up to 1527 conditions per place. [2023-08-29 18:26:22,282 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 63 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2023-08-29 18:26:22,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1889 transitions. [2023-08-29 18:26:22,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787377450980392 [2023-08-29 18:26:22,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1889 transitions. [2023-08-29 18:26:22,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1889 transitions. [2023-08-29 18:26:22,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:22,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1889 transitions. [2023-08-29 18:26:22,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.8333333333333) internal successors, (1889), 6 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:22,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:22,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 544.0) internal successors, (3808), 7 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:22,300 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 342 flow. Second operand 6 states and 1889 transitions. [2023-08-29 18:26:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 165 transitions, 490 flow [2023-08-29 18:26:22,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 486 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:22,308 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:22,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2023-08-29 18:26:22,310 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 10 predicate places. [2023-08-29 18:26:22,310 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 374 flow [2023-08-29 18:26:22,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.57142857142856) internal successors, (2132), 7 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:22,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:22,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:22,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:22,516 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 [2023-08-29 18:26:22,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:22,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 735544156, now seen corresponding path program 2 times [2023-08-29 18:26:22,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858183223] [2023-08-29 18:26:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858183223] [2023-08-29 18:26:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858183223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274930729] [2023-08-29 18:26:22,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:22,656 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) [2023-08-29 18:26:22,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:26:22,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:22,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:22,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:22,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:22,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:26:22,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274930729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:22,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:22,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083940668] [2023-08-29 18:26:22,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:22,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 544 [2023-08-29 18:26:22,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 374 flow. Second operand has 13 states, 13 states have (on average 304.3076923076923) internal successors, (3956), 13 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:22,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:22,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 544 [2023-08-29 18:26:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:23,380 INFO L130 PetriNetUnfolder]: 822/2920 cut-off events. [2023-08-29 18:26:23,380 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 18:26:23,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4498 conditions, 2920 events. 822/2920 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 23522 event pairs, 684 based on Foata normal form. 6/2640 useless extension candidates. Maximal degree in co-relation 4440. Up to 1527 conditions per place. [2023-08-29 18:26:23,394 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 63 selfloop transitions, 11 changer transitions 0/171 dead transitions. [2023-08-29 18:26:23,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3716 transitions. [2023-08-29 18:26:23,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692401960784313 [2023-08-29 18:26:23,402 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3716 transitions. [2023-08-29 18:26:23,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3716 transitions. [2023-08-29 18:26:23,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:23,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3716 transitions. [2023-08-29 18:26:23,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 309.6666666666667) internal successors, (3716), 12 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,426 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,426 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 374 flow. Second operand 12 states and 3716 transitions. [2023-08-29 18:26:23,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 171 transitions, 558 flow [2023-08-29 18:26:23,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 171 transitions, 544 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:23,434 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:23,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2023-08-29 18:26:23,436 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2023-08-29 18:26:23,436 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 444 flow [2023-08-29 18:26:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 304.3076923076923) internal successors, (3956), 13 states have internal predecessors, (3956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:23,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:23,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:23,646 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 [2023-08-29 18:26:23,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:26:23,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1452513124, now seen corresponding path program 3 times [2023-08-29 18:26:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:23,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924958173] [2023-08-29 18:26:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:23,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:23,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:23,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:23,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:23,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:26:23,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:26:23,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:26:23,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:26:23,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:26:23,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:26:23,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:26:23,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:26:23,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:26:23,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:26:23,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:26:23,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:26:23,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:26:23,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:26:23,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:26:23,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:26:23,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:26:23,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:26:23,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:26:23,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:26:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:26:23,772 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:26:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:26:23,772 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:26:23,775 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:23,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:26:23,825 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:26:23,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:23,984 INFO L130 PetriNetUnfolder]: 118/899 cut-off events. [2023-08-29 18:26:23,985 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 899 events. 118/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5601 event pairs, 0 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 560. Up to 12 conditions per place. [2023-08-29 18:26:23,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:24,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:24,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:24,007 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:24,007 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:24,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 455 transitions, 928 flow [2023-08-29 18:26:24,129 INFO L130 PetriNetUnfolder]: 118/899 cut-off events. [2023-08-29 18:26:24,130 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:26:24,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 899 events. 118/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5601 event pairs, 0 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 560. Up to 12 conditions per place. [2023-08-29 18:26:24,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 109956 [2023-08-29 18:26:27,943 INFO L134 LiptonReduction]: Checked pairs total: 452033 [2023-08-29 18:26:27,944 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-29 18:26:27,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:27,953 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;@7dd53984, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:27,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:26:27,963 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:26:27,963 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:27,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:27,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:27,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:27,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1156310291, now seen corresponding path program 1 times [2023-08-29 18:26:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:27,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043479779] [2023-08-29 18:26:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:28,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:28,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043479779] [2023-08-29 18:26:28,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043479779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:28,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:28,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117964968] [2023-08-29 18:26:28,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:28,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:28,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 705 [2023-08-29 18:26:28,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 255 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:28,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:28,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 705 [2023-08-29 18:26:28,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:33,850 INFO L130 PetriNetUnfolder]: 31138/70970 cut-off events. [2023-08-29 18:26:33,850 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-29 18:26:34,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115086 conditions, 70970 events. 31138/70970 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 818009 event pairs, 27108 based on Foata normal form. 7962/71563 useless extension candidates. Maximal degree in co-relation 51463. Up to 43993 conditions per place. [2023-08-29 18:26:34,342 INFO L137 encePairwiseOnDemand]: 661/705 looper letters, 84 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-08-29 18:26:34,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 620 flow [2023-08-29 18:26:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1307 transitions. [2023-08-29 18:26:34,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6179669030732861 [2023-08-29 18:26:34,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1307 transitions. [2023-08-29 18:26:34,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1307 transitions. [2023-08-29 18:26:34,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:34,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1307 transitions. [2023-08-29 18:26:34,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.6666666666667) internal successors, (1307), 3 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:34,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:34,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:34,357 INFO L175 Difference]: Start difference. First operand has 209 places, 255 transitions, 528 flow. Second operand 3 states and 1307 transitions. [2023-08-29 18:26:34,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 620 flow [2023-08-29 18:26:34,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 215 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:34,364 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 458 flow [2023-08-29 18:26:34,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2023-08-29 18:26:34,367 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2023-08-29 18:26:34,368 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 458 flow [2023-08-29 18:26:34,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:34,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:34,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:34,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:26:34,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:34,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1552499289, now seen corresponding path program 1 times [2023-08-29 18:26:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834244459] [2023-08-29 18:26:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:34,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834244459] [2023-08-29 18:26:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834244459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:34,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447294376] [2023-08-29 18:26:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:34,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:34,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:34,433 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) [2023-08-29 18:26:34,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:26:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:26:34,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:26:34,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:26:34,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447294376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:34,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:26:34,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:26:34,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897728285] [2023-08-29 18:26:34,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:34,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:34,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:34,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:26:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 705 [2023-08-29 18:26:34,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:34,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:34,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 705 [2023-08-29 18:26:34,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:39,849 INFO L130 PetriNetUnfolder]: 31206/71248 cut-off events. [2023-08-29 18:26:39,849 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-29 18:26:39,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115336 conditions, 71248 events. 31206/71248 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 823622 event pairs, 22416 based on Foata normal form. 0/63720 useless extension candidates. Maximal degree in co-relation 115323. Up to 43937 conditions per place. [2023-08-29 18:26:40,292 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 105 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-08-29 18:26:40,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 714 flow [2023-08-29 18:26:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2023-08-29 18:26:40,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080378250591016 [2023-08-29 18:26:40,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1286 transitions. [2023-08-29 18:26:40,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1286 transitions. [2023-08-29 18:26:40,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:40,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1286 transitions. [2023-08-29 18:26:40,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:40,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:40,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 705.0) internal successors, (2820), 4 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:40,304 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 458 flow. Second operand 3 states and 1286 transitions. [2023-08-29 18:26:40,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 714 flow [2023-08-29 18:26:40,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 236 transitions, 710 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:40,309 INFO L231 Difference]: Finished difference. Result has 214 places, 216 transitions, 466 flow [2023-08-29 18:26:40,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=214, PETRI_TRANSITIONS=216} [2023-08-29 18:26:40,312 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 5 predicate places. [2023-08-29 18:26:40,313 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 216 transitions, 466 flow [2023-08-29 18:26:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:40,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:40,314 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:40,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:40,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:40,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:40,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash -369078628, now seen corresponding path program 1 times [2023-08-29 18:26:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182542088] [2023-08-29 18:26:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:40,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:40,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182542088] [2023-08-29 18:26:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182542088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:40,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166953862] [2023-08-29 18:26:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:40,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:40,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:40,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:40,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:26:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:40,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:26:40,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:40,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166953862] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:40,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:40,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:26:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049264205] [2023-08-29 18:26:40,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:26:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:26:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:26:40,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 705 [2023-08-29 18:26:40,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 216 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 393.7142857142857) internal successors, (2756), 7 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:40,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:40,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 705 [2023-08-29 18:26:40,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:45,799 INFO L130 PetriNetUnfolder]: 31206/71350 cut-off events. [2023-08-29 18:26:45,799 INFO L131 PetriNetUnfolder]: For 940/940 co-relation queries the response was YES. [2023-08-29 18:26:45,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116223 conditions, 71350 events. 31206/71350 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 1715. Compared 824590 event pairs, 27108 based on Foata normal form. 3/64193 useless extension candidates. Maximal degree in co-relation 116195. Up to 43958 conditions per place. [2023-08-29 18:26:46,191 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 85 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2023-08-29 18:26:46,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 219 transitions, 658 flow [2023-08-29 18:26:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:26:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:26:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2444 transitions. [2023-08-29 18:26:46,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2023-08-29 18:26:46,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2444 transitions. [2023-08-29 18:26:46,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2444 transitions. [2023-08-29 18:26:46,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:46,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2444 transitions. [2023-08-29 18:26:46,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 407.3333333333333) internal successors, (2444), 6 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:46,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 705.0) internal successors, (4935), 7 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:46,214 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 705.0) internal successors, (4935), 7 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:46,214 INFO L175 Difference]: Start difference. First operand has 214 places, 216 transitions, 466 flow. Second operand 6 states and 2444 transitions. [2023-08-29 18:26:46,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 219 transitions, 658 flow [2023-08-29 18:26:46,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 219 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:46,220 INFO L231 Difference]: Finished difference. Result has 221 places, 219 transitions, 500 flow [2023-08-29 18:26:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2023-08-29 18:26:46,221 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 12 predicate places. [2023-08-29 18:26:46,221 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 500 flow [2023-08-29 18:26:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 393.7142857142857) internal successors, (2756), 7 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:46,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:46,223 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:46,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:46,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:46,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:46,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash -307985538, now seen corresponding path program 2 times [2023-08-29 18:26:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:46,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994779971] [2023-08-29 18:26:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:46,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994779971] [2023-08-29 18:26:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994779971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:26:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387171593] [2023-08-29 18:26:46,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:26:46,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:46,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:26:46,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:26:46,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 18:26:46,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:26:46,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:26:46,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:26:46,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:26:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:46,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:26:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:26:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387171593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:26:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:26:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:26:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866536146] [2023-08-29 18:26:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:26:46,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:26:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:26:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:26:46,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 705 [2023-08-29 18:26:46,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 500 flow. Second operand has 13 states, 13 states have (on average 393.38461538461536) internal successors, (5114), 13 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:46,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:46,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 705 [2023-08-29 18:26:46,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:26:52,204 INFO L130 PetriNetUnfolder]: 31206/71356 cut-off events. [2023-08-29 18:26:52,205 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-08-29 18:26:52,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116243 conditions, 71356 events. 31206/71356 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 824345 event pairs, 27108 based on Foata normal form. 6/64202 useless extension candidates. Maximal degree in co-relation 116183. Up to 43958 conditions per place. [2023-08-29 18:26:52,618 INFO L137 encePairwiseOnDemand]: 702/705 looper letters, 85 selfloop transitions, 11 changer transitions 0/225 dead transitions. [2023-08-29 18:26:52,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 728 flow [2023-08-29 18:26:52,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:26:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:26:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4805 transitions. [2023-08-29 18:26:52,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567966903073286 [2023-08-29 18:26:52,629 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4805 transitions. [2023-08-29 18:26:52,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4805 transitions. [2023-08-29 18:26:52,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:52,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4805 transitions. [2023-08-29 18:26:52,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 400.4166666666667) internal successors, (4805), 12 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 705.0) internal successors, (9165), 13 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,653 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 705.0) internal successors, (9165), 13 states have internal predecessors, (9165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,654 INFO L175 Difference]: Start difference. First operand has 221 places, 219 transitions, 500 flow. Second operand 12 states and 4805 transitions. [2023-08-29 18:26:52,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 728 flow [2023-08-29 18:26:52,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 225 transitions, 714 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:26:52,660 INFO L231 Difference]: Finished difference. Result has 237 places, 225 transitions, 570 flow [2023-08-29 18:26:52,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=705, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=570, PETRI_PLACES=237, PETRI_TRANSITIONS=225} [2023-08-29 18:26:52,661 INFO L281 CegarLoopForPetriNet]: 209 programPoint places, 28 predicate places. [2023-08-29 18:26:52,661 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 225 transitions, 570 flow [2023-08-29 18:26:52,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 393.38461538461536) internal successors, (5114), 13 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:52,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:52,663 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:26:52,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 18:26:52,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:26:52,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:26:52,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash -545780034, now seen corresponding path program 3 times [2023-08-29 18:26:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:52,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694476030] [2023-08-29 18:26:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:52,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:26:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:26:52,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:26:52,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:26:52,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-08-29 18:26:52,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-08-29 18:26:52,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-08-29 18:26:52,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-08-29 18:26:52,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-08-29 18:26:52,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-08-29 18:26:52,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-08-29 18:26:52,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-08-29 18:26:52,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-08-29 18:26:52,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-08-29 18:26:52,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-08-29 18:26:52,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-08-29 18:26:52,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-08-29 18:26:52,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-08-29 18:26:52,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-08-29 18:26:52,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-08-29 18:26:52,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-08-29 18:26:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:26:52,942 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:26:52,943 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:26:52,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:26:52,998 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:26:53,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,162 INFO L130 PetriNetUnfolder]: 168/1283 cut-off events. [2023-08-29 18:26:53,162 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:53,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 1283 events. 168/1283 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8481 event pairs, 1 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 907. Up to 16 conditions per place. [2023-08-29 18:26:53,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:26:53,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 559 transitions, 1148 flow [2023-08-29 18:26:53,589 INFO L130 PetriNetUnfolder]: 168/1283 cut-off events. [2023-08-29 18:26:53,590 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:26:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 1283 events. 168/1283 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8481 event pairs, 1 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 907. Up to 16 conditions per place. [2023-08-29 18:26:53,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 197064 [2023-08-29 18:26:57,516 INFO L134 LiptonReduction]: Checked pairs total: 812329 [2023-08-29 18:26:57,516 INFO L136 LiptonReduction]: Total number of compositions: 306 [2023-08-29 18:26:57,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:26:57,521 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;@7dd53984, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:26:57,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 18:26:57,527 INFO L130 PetriNetUnfolder]: 26/116 cut-off events. [2023-08-29 18:26:57,528 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:26:57,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:57,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:57,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 18:26:57,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:57,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1811251786, now seen corresponding path program 1 times [2023-08-29 18:26:57,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165710232] [2023-08-29 18:26:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:26:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165710232] [2023-08-29 18:26:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165710232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:57,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763164611] [2023-08-29 18:26:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:57,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 865 [2023-08-29 18:26:57,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 318 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:57,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:57,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 865 [2023-08-29 18:26:57,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand