./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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_37-indirect_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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:51:49,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:51:49,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:51:49,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:51:49,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:51:49,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:51:49,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:51:49,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:51:49,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:51:49,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:51:49,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:51:49,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:51:49,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:51:49,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:51:49,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:51:49,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:51:49,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:51:49,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:51:49,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:51:49,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:51:49,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:51:49,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:51:49,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:51:49,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:51:49,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:51:49,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:51:49,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:51:49,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:51:49,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:51:49,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:51:49,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:51:49,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:51:49,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:51:49,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:51:49,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:51:49,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:51:49,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:51:49,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:51:49,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:51:49,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:51:49,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:51:49,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:51:49,346 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:51:49,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:51:49,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:51:49,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:51:49,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:51:49,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:51:49,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:51:49,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:51:49,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:51:49,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:51:49,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:51:49,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:51:49,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:51:49,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:51:49,351 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:51:49,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:51:49,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:51:49,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:51:49,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:51:49,685 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:51:49,685 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:51:49,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-29 02:51:50,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:51:51,130 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:51:51,131 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-29 02:51:51,142 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e60a0f2/0168045557164884ba767f4dd97b1b49/FLAG45fe6d7d5 [2023-08-29 02:51:51,155 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e60a0f2/0168045557164884ba767f4dd97b1b49 [2023-08-29 02:51:51,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:51:51,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:51:51,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:51:51,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:51:51,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:51:51,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673c98a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51, skipping insertion in model container [2023-08-29 02:51:51,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:51:51,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:51:51,543 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_37-indirect_racing.i[30176,30189] [2023-08-29 02:51:51,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:51:51,586 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:51:51,623 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_37-indirect_racing.i[30176,30189] [2023-08-29 02:51:51,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:51:51,690 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:51:51,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51 WrapperNode [2023-08-29 02:51:51,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:51:51,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:51:51,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:51:51,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:51:51,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,748 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2023-08-29 02:51:51,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:51:51,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:51:51,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:51:51,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:51:51,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:51:51,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:51:51,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:51:51,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:51:51,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (1/1) ... [2023-08-29 02:51:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:51:51,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:51:51,852 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 02:51:51,857 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 02:51:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:51:51,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:51:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:51:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:51:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:51:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:51:51,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:51:51,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:51:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:51:51,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:51:51,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:51:51,889 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 02:51:51,989 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:51:51,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:51:52,357 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:51:52,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:51:52,376 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 02:51:52,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:51:52 BoogieIcfgContainer [2023-08-29 02:51:52,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:51:52,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:51:52,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:51:52,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:51:52,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:51:51" (1/3) ... [2023-08-29 02:51:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a42c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:51:52, skipping insertion in model container [2023-08-29 02:51:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:51" (2/3) ... [2023-08-29 02:51:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a42c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:51:52, skipping insertion in model container [2023-08-29 02:51:52,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:51:52" (3/3) ... [2023-08-29 02:51:52,391 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-29 02:51:52,397 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:51:52,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:51:52,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:51:52,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:51:52,488 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:51:52,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,636 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-29 02:51:52,637 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:52,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 02:51:52,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:51:52,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:52,730 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-29 02:51:52,730 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 02:51:52,736 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-08-29 02:51:56,352 INFO L134 LiptonReduction]: Checked pairs total: 38790 [2023-08-29 02:51:56,353 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-29 02:51:56,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:51:56,370 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;@4802ce1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:51:56,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-29 02:51:56,371 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:51:56,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:56,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:56,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:51:56,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:56,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-08-29 02:51:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017148160] [2023-08-29 02:51:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:56,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:56,467 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 02:51:56,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017148160] [2023-08-29 02:51:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017148160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:56,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:56,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:51:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535187766] [2023-08-29 02:51:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:51:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:56,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:51:56,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:51:56,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 298 [2023-08-29 02:51:56,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 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 02:51:56,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:56,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 298 [2023-08-29 02:51:56,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:56,618 INFO L130 PetriNetUnfolder]: 118/505 cut-off events. [2023-08-29 02:51:56,618 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 505 events. 118/505 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2468 event pairs, 117 based on Foata normal form. 10/468 useless extension candidates. Maximal degree in co-relation 737. Up to 269 conditions per place. [2023-08-29 02:51:56,625 INFO L137 encePairwiseOnDemand]: 284/298 looper letters, 26 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-29 02:51:56,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 180 flow [2023-08-29 02:51:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:51:56,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:51:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 350 transitions. [2023-08-29 02:51:56,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587248322147651 [2023-08-29 02:51:56,643 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 350 transitions. [2023-08-29 02:51:56,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 350 transitions. [2023-08-29 02:51:56,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:56,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 350 transitions. [2023-08-29 02:51:56,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 175.0) internal successors, (350), 2 states have internal predecessors, (350), 0 states have call successors, (0), 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 02:51:56,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 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 02:51:56,658 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 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 02:51:56,659 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 156 flow. Second operand 2 states and 350 transitions. [2023-08-29 02:51:56,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 180 flow [2023-08-29 02:51:56,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:51:56,665 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 128 flow [2023-08-29 02:51:56,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-29 02:51:56,669 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-29 02:51:56,670 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 128 flow [2023-08-29 02:51:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 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 02:51:56,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:56,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:51:56,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:56,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -615990794, now seen corresponding path program 1 times [2023-08-29 02:51:56,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:56,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930025874] [2023-08-29 02:51:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:56,820 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 02:51:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930025874] [2023-08-29 02:51:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930025874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:51:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324429506] [2023-08-29 02:51:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:56,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:51:56,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:51:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:51:56,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 298 [2023-08-29 02:51:56,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 02:51:56,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:56,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 298 [2023-08-29 02:51:56,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:56,928 INFO L130 PetriNetUnfolder]: 117/491 cut-off events. [2023-08-29 02:51:56,928 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:56,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 491 events. 117/491 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2344 event pairs, 96 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 759. Up to 248 conditions per place. [2023-08-29 02:51:56,930 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 38 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-29 02:51:56,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 236 flow [2023-08-29 02:51:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:51:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:51:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-29 02:51:56,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5525727069351231 [2023-08-29 02:51:56,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-29 02:51:56,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-29 02:51:56,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:56,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-29 02:51:56,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 02:51:56,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:51:56,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:51:56,939 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 128 flow. Second operand 3 states and 494 transitions. [2023-08-29 02:51:56,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 236 flow [2023-08-29 02:51:56,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:51:56,941 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 136 flow [2023-08-29 02:51:56,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-08-29 02:51:56,942 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-29 02:51:56,942 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 136 flow [2023-08-29 02:51:56,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 02:51:56,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:56,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:56,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:51:56,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:56,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1144722500, now seen corresponding path program 1 times [2023-08-29 02:51:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:56,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879520185] [2023-08-29 02:51:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:56,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:57,018 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 02:51:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879520185] [2023-08-29 02:51:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879520185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:51:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919224290] [2023-08-29 02:51:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:57,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:51:57,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:51:57,022 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 02:51:57,034 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 02:51:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:57,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:51:57,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:51:57,155 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 02:51:57,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:51:57,193 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 02:51:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919224290] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:51:57,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:51:57,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:51:57,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801191327] [2023-08-29 02:51:57,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:51:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:51:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:51:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:51:57,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 298 [2023-08-29 02:51:57,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:51:57,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:57,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 298 [2023-08-29 02:51:57,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:57,274 INFO L130 PetriNetUnfolder]: 26/106 cut-off events. [2023-08-29 02:51:57,274 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 02:51:57,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 106 events. 26/106 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 199 event pairs, 0 based on Foata normal form. 14/115 useless extension candidates. Maximal degree in co-relation 221. Up to 54 conditions per place. [2023-08-29 02:51:57,275 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 23 selfloop transitions, 2 changer transitions 6/54 dead transitions. [2023-08-29 02:51:57,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 181 flow [2023-08-29 02:51:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:51:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:51:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-29 02:51:57,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302013422818792 [2023-08-29 02:51:57,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-29 02:51:57,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-29 02:51:57,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:57,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-29 02:51:57,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 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 02:51:57,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 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 02:51:57,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 0 states have call successors, (0), 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 02:51:57,281 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 136 flow. Second operand 4 states and 632 transitions. [2023-08-29 02:51:57,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 181 flow [2023-08-29 02:51:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 175 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 02:51:57,283 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 83 flow [2023-08-29 02:51:57,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-29 02:51:57,284 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -21 predicate places. [2023-08-29 02:51:57,284 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 83 flow [2023-08-29 02:51:57,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:51:57,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:57,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:57,294 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 02:51:57,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:51:57,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:57,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1991419070, now seen corresponding path program 1 times [2023-08-29 02:51:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958991505] [2023-08-29 02:51:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:57,780 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 02:51:57,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:57,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958991505] [2023-08-29 02:51:57,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958991505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:57,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944082886] [2023-08-29 02:51:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:58,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 298 [2023-08-29 02:51:58,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 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 02:51:58,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:58,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 298 [2023-08-29 02:51:58,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:58,080 INFO L130 PetriNetUnfolder]: 50/146 cut-off events. [2023-08-29 02:51:58,080 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:51:58,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 146 events. 50/146 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 245 event pairs, 28 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-29 02:51:58,081 INFO L137 encePairwiseOnDemand]: 286/298 looper letters, 27 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2023-08-29 02:51:58,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 177 flow [2023-08-29 02:51:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 825 transitions. [2023-08-29 02:51:58,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46140939597315433 [2023-08-29 02:51:58,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 825 transitions. [2023-08-29 02:51:58,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 825 transitions. [2023-08-29 02:51:58,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:58,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 825 transitions. [2023-08-29 02:51:58,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.5) internal successors, (825), 6 states have internal predecessors, (825), 0 states have call successors, (0), 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 02:51:58,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:58,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:58,091 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 83 flow. Second operand 6 states and 825 transitions. [2023-08-29 02:51:58,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 177 flow [2023-08-29 02:51:58,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:51:58,097 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 96 flow [2023-08-29 02:51:58,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-29 02:51:58,098 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -23 predicate places. [2023-08-29 02:51:58,098 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 96 flow [2023-08-29 02:51:58,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 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 02:51:58,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:58,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 02:51:58,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:58,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1240303404, now seen corresponding path program 1 times [2023-08-29 02:51:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709116981] [2023-08-29 02:51:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:58,440 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 02:51:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:58,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709116981] [2023-08-29 02:51:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709116981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:58,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:58,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295959673] [2023-08-29 02:51:58,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:58,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:58,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 298 [2023-08-29 02:51:58,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 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 02:51:58,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:58,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 298 [2023-08-29 02:51:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:58,642 INFO L130 PetriNetUnfolder]: 50/143 cut-off events. [2023-08-29 02:51:58,643 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:51:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 143 events. 50/143 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 229 event pairs, 42 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 332. Up to 111 conditions per place. [2023-08-29 02:51:58,644 INFO L137 encePairwiseOnDemand]: 292/298 looper letters, 32 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-29 02:51:58,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 188 flow [2023-08-29 02:51:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-08-29 02:51:58,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306487695749441 [2023-08-29 02:51:58,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-08-29 02:51:58,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-08-29 02:51:58,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:58,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-08-29 02:51:58,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 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 02:51:58,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:58,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:58,653 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 96 flow. Second operand 6 states and 770 transitions. [2023-08-29 02:51:58,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 188 flow [2023-08-29 02:51:58,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:51:58,655 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 84 flow [2023-08-29 02:51:58,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-29 02:51:58,655 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -24 predicate places. [2023-08-29 02:51:58,656 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 84 flow [2023-08-29 02:51:58,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.66666666666667) internal successors, (748), 6 states have internal predecessors, (748), 0 states have call successors, (0), 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 02:51:58,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:58,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:51:58,657 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:58,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2081879482, now seen corresponding path program 1 times [2023-08-29 02:51:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564455278] [2023-08-29 02:51:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:59,001 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 02:51:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564455278] [2023-08-29 02:51:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564455278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:59,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:59,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590859258] [2023-08-29 02:51:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:59,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 298 [2023-08-29 02:51:59,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 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 02:51:59,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:59,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 298 [2023-08-29 02:51:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:59,188 INFO L130 PetriNetUnfolder]: 50/140 cut-off events. [2023-08-29 02:51:59,189 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 140 events. 50/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 223 event pairs, 42 based on Foata normal form. 3/143 useless extension candidates. Maximal degree in co-relation 314. Up to 111 conditions per place. [2023-08-29 02:51:59,189 INFO L137 encePairwiseOnDemand]: 293/298 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-29 02:51:59,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 176 flow [2023-08-29 02:51:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-08-29 02:51:59,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306487695749441 [2023-08-29 02:51:59,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-08-29 02:51:59,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-08-29 02:51:59,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:59,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-08-29 02:51:59,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 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 02:51:59,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:59,198 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 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 02:51:59,198 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 84 flow. Second operand 6 states and 770 transitions. [2023-08-29 02:51:59,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 176 flow [2023-08-29 02:51:59,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:51:59,199 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-29 02:51:59,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-29 02:51:59,200 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -25 predicate places. [2023-08-29 02:51:59,200 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-29 02:51:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 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 02:51:59,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2023-08-29 02:51:59,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-29 02:51:59,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-29 02:51:59,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-29 02:51:59,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-29 02:51:59,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-29 02:51:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-29 02:51:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-29 02:51:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-29 02:51:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-29 02:51:59,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-29 02:51:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-29 02:51:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-29 02:51:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-29 02:51:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-29 02:51:59,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-29 02:51:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-29 02:51:59,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-29 02:51:59,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:51:59,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:51:59,209 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:51:59,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:59,230 INFO L130 PetriNetUnfolder]: 17/215 cut-off events. [2023-08-29 02:51:59,230 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:59,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 215 events. 17/215 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 612 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 02:51:59,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 169 transitions, 346 flow [2023-08-29 02:51:59,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 161 transitions, 327 flow [2023-08-29 02:51:59,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:51:59,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 161 transitions, 327 flow [2023-08-29 02:51:59,233 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 161 transitions, 327 flow [2023-08-29 02:51:59,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 161 transitions, 327 flow [2023-08-29 02:51:59,249 INFO L130 PetriNetUnfolder]: 16/207 cut-off events. [2023-08-29 02:51:59,249 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:59,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 16/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 563 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-08-29 02:51:59,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-08-29 02:52:02,390 INFO L134 LiptonReduction]: Checked pairs total: 29520 [2023-08-29 02:52:02,391 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-29 02:52:02,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:52:02,393 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;@4802ce1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:02,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:52:02,397 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-08-29 02:52:02,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:02,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:02,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:52:02,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:52:02,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash -54280844, now seen corresponding path program 1 times [2023-08-29 02:52:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837543344] [2023-08-29 02:52:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:02,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:52:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:02,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:52:02,438 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:52:02,438 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:52:02,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:52:02,439 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:52:02,439 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:52:02,440 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:52:02,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:52:02,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:52:02,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,524 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-29 02:52:02,525 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:02,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-29 02:52:02,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:02,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:02,564 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-29 02:52:02,565 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:02,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-29 02:52:02,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 23892 [2023-08-29 02:52:05,370 INFO L134 LiptonReduction]: Checked pairs total: 137579 [2023-08-29 02:52:05,370 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-29 02:52:05,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:52:05,372 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;@4802ce1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:05,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-29 02:52:05,373 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:52:05,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:05,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:05,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:52:05,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:05,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1165, now seen corresponding path program 1 times [2023-08-29 02:52:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848151727] [2023-08-29 02:52:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:05,392 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 02:52:05,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848151727] [2023-08-29 02:52:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848151727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:05,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:52:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797570477] [2023-08-29 02:52:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:52:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:52:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:52:05,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 374 [2023-08-29 02:52:05,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 129 transitions, 276 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 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 02:52:05,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:05,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 374 [2023-08-29 02:52:05,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:06,285 INFO L130 PetriNetUnfolder]: 3147/8660 cut-off events. [2023-08-29 02:52:06,285 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 02:52:06,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 8660 events. 3147/8660 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 78890 event pairs, 3132 based on Foata normal form. 550/8333 useless extension candidates. Maximal degree in co-relation 9731. Up to 5043 conditions per place. [2023-08-29 02:52:06,334 INFO L137 encePairwiseOnDemand]: 356/374 looper letters, 39 selfloop transitions, 0 changer transitions 0/111 dead transitions. [2023-08-29 02:52:06,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 318 flow [2023-08-29 02:52:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:52:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:52:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 487 transitions. [2023-08-29 02:52:06,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510695187165776 [2023-08-29 02:52:06,337 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 487 transitions. [2023-08-29 02:52:06,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 487 transitions. [2023-08-29 02:52:06,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:06,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 487 transitions. [2023-08-29 02:52:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 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 02:52:06,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 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 02:52:06,341 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 374.0) internal successors, (1122), 3 states have internal predecessors, (1122), 0 states have call successors, (0), 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 02:52:06,341 INFO L175 Difference]: Start difference. First operand has 118 places, 129 transitions, 276 flow. Second operand 2 states and 487 transitions. [2023-08-29 02:52:06,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 318 flow [2023-08-29 02:52:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:06,344 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 240 flow [2023-08-29 02:52:06,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2023-08-29 02:52:06,345 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2023-08-29 02:52:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 240 flow [2023-08-29 02:52:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 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 02:52:06,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:06,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:52:06,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:06,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 178966882, now seen corresponding path program 1 times [2023-08-29 02:52:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808865351] [2023-08-29 02:52:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:06,366 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 02:52:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808865351] [2023-08-29 02:52:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808865351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123558869] [2023-08-29 02:52:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 374 [2023-08-29 02:52:06,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 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 02:52:06,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:06,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 374 [2023-08-29 02:52:06,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:07,466 INFO L130 PetriNetUnfolder]: 4793/11771 cut-off events. [2023-08-29 02:52:07,467 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-29 02:52:07,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19481 conditions, 11771 events. 4793/11771 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 103655 event pairs, 1833 based on Foata normal form. 0/10923 useless extension candidates. Maximal degree in co-relation 19476. Up to 7431 conditions per place. [2023-08-29 02:52:07,534 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 58 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-29 02:52:07,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 387 flow [2023-08-29 02:52:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-08-29 02:52:07,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5971479500891266 [2023-08-29 02:52:07,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-08-29 02:52:07,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-08-29 02:52:07,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:07,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-08-29 02:52:07,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 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 02:52:07,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 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 02:52:07,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 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 02:52:07,542 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 240 flow. Second operand 3 states and 670 transitions. [2023-08-29 02:52:07,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 387 flow [2023-08-29 02:52:07,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:07,546 INFO L231 Difference]: Finished difference. Result has 114 places, 109 transitions, 246 flow [2023-08-29 02:52:07,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=114, PETRI_TRANSITIONS=109} [2023-08-29 02:52:07,549 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2023-08-29 02:52:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 109 transitions, 246 flow [2023-08-29 02:52:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 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 02:52:07,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:07,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:07,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:52:07,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:07,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 459749203, now seen corresponding path program 1 times [2023-08-29 02:52:07,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710997598] [2023-08-29 02:52:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:07,593 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 02:52:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710997598] [2023-08-29 02:52:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710997598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529110662] [2023-08-29 02:52:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 374 [2023-08-29 02:52:07,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 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 02:52:07,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:07,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 374 [2023-08-29 02:52:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:08,459 INFO L130 PetriNetUnfolder]: 3258/9343 cut-off events. [2023-08-29 02:52:08,460 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-08-29 02:52:08,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 9343 events. 3258/9343 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88525 event pairs, 1551 based on Foata normal form. 0/8665 useless extension candidates. Maximal degree in co-relation 14887. Up to 5251 conditions per place. [2023-08-29 02:52:08,504 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 52 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-29 02:52:08,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 382 flow [2023-08-29 02:52:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-08-29 02:52:08,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122994652406417 [2023-08-29 02:52:08,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-08-29 02:52:08,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-08-29 02:52:08,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:08,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-08-29 02:52:08,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:52:08,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 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 02:52:08,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 0 states have call successors, (0), 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 02:52:08,511 INFO L175 Difference]: Start difference. First operand has 114 places, 109 transitions, 246 flow. Second operand 3 states and 687 transitions. [2023-08-29 02:52:08,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 382 flow [2023-08-29 02:52:08,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:08,516 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 258 flow [2023-08-29 02:52:08,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-29 02:52:08,517 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2023-08-29 02:52:08,517 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 258 flow [2023-08-29 02:52:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 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 02:52:08,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:08,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:08,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:52:08,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:08,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:08,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1414569791, now seen corresponding path program 1 times [2023-08-29 02:52:08,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:08,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373663069] [2023-08-29 02:52:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:08,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:08,553 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 02:52:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373663069] [2023-08-29 02:52:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373663069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:52:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121165588] [2023-08-29 02:52:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:08,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:08,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:52:08,557 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 02:52:08,560 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 02:52:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:08,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:52:08,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:52:08,642 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 02:52:08,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:52:08,657 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 02:52:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121165588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:52:08,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:52:08,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:52:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819563076] [2023-08-29 02:52:08,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:52:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:52:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:52:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:52:08,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 374 [2023-08-29 02:52:08,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 212.28571428571428) internal successors, (1486), 7 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:52:08,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:08,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 374 [2023-08-29 02:52:08,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:09,013 INFO L130 PetriNetUnfolder]: 828/2438 cut-off events. [2023-08-29 02:52:09,013 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2023-08-29 02:52:09,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 2438 events. 828/2438 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 17597 event pairs, 394 based on Foata normal form. 193/2571 useless extension candidates. Maximal degree in co-relation 4196. Up to 1006 conditions per place. [2023-08-29 02:52:09,027 INFO L137 encePairwiseOnDemand]: 371/374 looper letters, 67 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-08-29 02:52:09,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 127 transitions, 429 flow [2023-08-29 02:52:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:52:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:52:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1120 transitions. [2023-08-29 02:52:09,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989304812834224 [2023-08-29 02:52:09,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1120 transitions. [2023-08-29 02:52:09,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1120 transitions. [2023-08-29 02:52:09,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:09,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1120 transitions. [2023-08-29 02:52:09,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 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 02:52:09,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 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 02:52:09,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 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 02:52:09,038 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 258 flow. Second operand 5 states and 1120 transitions. [2023-08-29 02:52:09,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 127 transitions, 429 flow [2023-08-29 02:52:09,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 425 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 02:52:09,042 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 208 flow [2023-08-29 02:52:09,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2023-08-29 02:52:09,043 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -18 predicate places. [2023-08-29 02:52:09,043 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 208 flow [2023-08-29 02:52:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.28571428571428) internal successors, (1486), 7 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:52:09,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:09,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:09,053 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 02:52:09,250 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,SelfDestructingSolverStorable10 [2023-08-29 02:52:09,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:09,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1761365865, now seen corresponding path program 1 times [2023-08-29 02:52:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169739541] [2023-08-29 02:52:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:09,458 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 02:52:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169739541] [2023-08-29 02:52:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169739541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:09,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904179762] [2023-08-29 02:52:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:09,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 374 [2023-08-29 02:52:09,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 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 02:52:09,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:09,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 374 [2023-08-29 02:52:09,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:11,053 INFO L130 PetriNetUnfolder]: 7886/14170 cut-off events. [2023-08-29 02:52:11,053 INFO L131 PetriNetUnfolder]: For 5254/5254 co-relation queries the response was YES. [2023-08-29 02:52:11,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30731 conditions, 14170 events. 7886/14170 cut-off events. For 5254/5254 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 99547 event pairs, 2529 based on Foata normal form. 0/13783 useless extension candidates. Maximal degree in co-relation 30723. Up to 5412 conditions per place. [2023-08-29 02:52:11,138 INFO L137 encePairwiseOnDemand]: 330/374 looper letters, 230 selfloop transitions, 84 changer transitions 0/336 dead transitions. [2023-08-29 02:52:11,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 336 transitions, 1392 flow [2023-08-29 02:52:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-08-29 02:52:11,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-08-29 02:52:11,142 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-08-29 02:52:11,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-08-29 02:52:11,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:11,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-08-29 02:52:11,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 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 02:52:11,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:11,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:11,149 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 208 flow. Second operand 6 states and 1326 transitions. [2023-08-29 02:52:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 336 transitions, 1392 flow [2023-08-29 02:52:11,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 336 transitions, 1369 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-29 02:52:11,156 INFO L231 Difference]: Finished difference. Result has 107 places, 180 transitions, 833 flow [2023-08-29 02:52:11,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=107, PETRI_TRANSITIONS=180} [2023-08-29 02:52:11,157 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -11 predicate places. [2023-08-29 02:52:11,157 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 180 transitions, 833 flow [2023-08-29 02:52:11,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 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 02:52:11,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:11,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:52:11,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:11,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 981894656, now seen corresponding path program 1 times [2023-08-29 02:52:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:11,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580692033] [2023-08-29 02:52:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:11,348 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 02:52:11,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:11,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580692033] [2023-08-29 02:52:11,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580692033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:11,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:11,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:11,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862677771] [2023-08-29 02:52:11,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:11,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:11,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:11,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:11,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:11,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 374 [2023-08-29 02:52:11,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 180 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 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 02:52:11,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:11,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 374 [2023-08-29 02:52:11,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:12,885 INFO L130 PetriNetUnfolder]: 8981/16120 cut-off events. [2023-08-29 02:52:12,885 INFO L131 PetriNetUnfolder]: For 8795/8933 co-relation queries the response was YES. [2023-08-29 02:52:12,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45183 conditions, 16120 events. 8981/16120 cut-off events. For 8795/8933 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 116314 event pairs, 5056 based on Foata normal form. 147/16210 useless extension candidates. Maximal degree in co-relation 45172. Up to 12052 conditions per place. [2023-08-29 02:52:12,987 INFO L137 encePairwiseOnDemand]: 347/374 looper letters, 236 selfloop transitions, 86 changer transitions 0/347 dead transitions. [2023-08-29 02:52:12,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 347 transitions, 2169 flow [2023-08-29 02:52:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-29 02:52:12,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231729055258467 [2023-08-29 02:52:12,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-29 02:52:12,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-29 02:52:12,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:12,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-29 02:52:12,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 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 02:52:12,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:13,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:13,000 INFO L175 Difference]: Start difference. First operand has 107 places, 180 transitions, 833 flow. Second operand 6 states and 1174 transitions. [2023-08-29 02:52:13,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 347 transitions, 2169 flow [2023-08-29 02:52:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 347 transitions, 2169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:13,012 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-29 02:52:13,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-29 02:52:13,013 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2023-08-29 02:52:13,013 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-29 02:52:13,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 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 02:52:13,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:13,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:13,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:52:13,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:13,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 802236605, now seen corresponding path program 1 times [2023-08-29 02:52:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553507537] [2023-08-29 02:52:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:13,209 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 02:52:13,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:13,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553507537] [2023-08-29 02:52:13,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553507537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:13,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:13,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:13,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643551382] [2023-08-29 02:52:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:13,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:13,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 374 [2023-08-29 02:52:13,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 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 02:52:13,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:13,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 374 [2023-08-29 02:52:13,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:15,509 INFO L130 PetriNetUnfolder]: 10308/18422 cut-off events. [2023-08-29 02:52:15,509 INFO L131 PetriNetUnfolder]: For 20947/21145 co-relation queries the response was YES. [2023-08-29 02:52:15,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59169 conditions, 18422 events. 10308/18422 cut-off events. For 20947/21145 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 134918 event pairs, 5425 based on Foata normal form. 165/18512 useless extension candidates. Maximal degree in co-relation 59153. Up to 13762 conditions per place. [2023-08-29 02:52:15,608 INFO L137 encePairwiseOnDemand]: 347/374 looper letters, 323 selfloop transitions, 101 changer transitions 0/449 dead transitions. [2023-08-29 02:52:15,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 449 transitions, 3417 flow [2023-08-29 02:52:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-29 02:52:15,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231729055258467 [2023-08-29 02:52:15,612 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-29 02:52:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-29 02:52:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:15,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-29 02:52:15,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 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 02:52:15,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:15,620 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:15,620 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1174 transitions. [2023-08-29 02:52:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 449 transitions, 3417 flow [2023-08-29 02:52:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 449 transitions, 3401 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:15,672 INFO L231 Difference]: Finished difference. Result has 127 places, 370 transitions, 2765 flow [2023-08-29 02:52:15,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2765, PETRI_PLACES=127, PETRI_TRANSITIONS=370} [2023-08-29 02:52:15,673 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2023-08-29 02:52:15,673 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 370 transitions, 2765 flow [2023-08-29 02:52:15,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 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 02:52:15,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:15,674 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:52:15,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:15,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1467403604, now seen corresponding path program 1 times [2023-08-29 02:52:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:15,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084456247] [2023-08-29 02:52:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:52:15,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:15,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084456247] [2023-08-29 02:52:15,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084456247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:52:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437383377] [2023-08-29 02:52:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:15,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:15,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:52:15,812 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 02:52:15,814 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 02:52:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:15,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 02:52:15,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:52:15,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:52:16,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:52:16,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 02:52:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:52:16,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:52:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437383377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:16,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:52:16,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-29 02:52:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719048069] [2023-08-29 02:52:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:52:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:52:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 02:52:16,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 374 [2023-08-29 02:52:16,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 370 transitions, 2765 flow. Second operand has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 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 02:52:16,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:16,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 374 [2023-08-29 02:52:16,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:16,307 INFO L130 PetriNetUnfolder]: 423/1557 cut-off events. [2023-08-29 02:52:16,308 INFO L131 PetriNetUnfolder]: For 1534/1534 co-relation queries the response was YES. [2023-08-29 02:52:16,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 1557 events. 423/1557 cut-off events. For 1534/1534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9078 event pairs, 99 based on Foata normal form. 108/1665 useless extension candidates. Maximal degree in co-relation 4469. Up to 612 conditions per place. [2023-08-29 02:52:16,318 INFO L137 encePairwiseOnDemand]: 365/374 looper letters, 32 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-29 02:52:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 90 transitions, 524 flow [2023-08-29 02:52:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:52:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:52:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-29 02:52:16,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655080213903744 [2023-08-29 02:52:16,321 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-29 02:52:16,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-29 02:52:16,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:16,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-29 02:52:16,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 0 states have call successors, (0), 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 02:52:16,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 0 states have call successors, (0), 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 02:52:16,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 374.0) internal successors, (1870), 5 states have internal predecessors, (1870), 0 states have call successors, (0), 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 02:52:16,327 INFO L175 Difference]: Start difference. First operand has 127 places, 370 transitions, 2765 flow. Second operand 4 states and 846 transitions. [2023-08-29 02:52:16,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 90 transitions, 524 flow [2023-08-29 02:52:16,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 296 flow, removed 54 selfloop flow, removed 30 redundant places. [2023-08-29 02:52:16,337 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-29 02:52:16,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-29 02:52:16,337 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -24 predicate places. [2023-08-29 02:52:16,338 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-29 02:52:16,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 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 02:52:16,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:16,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:16,345 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 02:52:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:16,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:16,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1096942601, now seen corresponding path program 1 times [2023-08-29 02:52:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479211593] [2023-08-29 02:52:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:16,759 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 02:52:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479211593] [2023-08-29 02:52:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479211593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:16,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:16,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45570179] [2023-08-29 02:52:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:16,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:16,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:16,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:16,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 374 [2023-08-29 02:52:16,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 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 02:52:16,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:16,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 374 [2023-08-29 02:52:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:17,164 INFO L130 PetriNetUnfolder]: 932/1996 cut-off events. [2023-08-29 02:52:17,164 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-08-29 02:52:17,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 1996 events. 932/1996 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9646 event pairs, 828 based on Foata normal form. 0/1978 useless extension candidates. Maximal degree in co-relation 4340. Up to 1617 conditions per place. [2023-08-29 02:52:17,170 INFO L137 encePairwiseOnDemand]: 368/374 looper letters, 74 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-29 02:52:17,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 461 flow [2023-08-29 02:52:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:17,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1053 transitions. [2023-08-29 02:52:17,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692513368983957 [2023-08-29 02:52:17,174 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1053 transitions. [2023-08-29 02:52:17,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1053 transitions. [2023-08-29 02:52:17,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:17,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1053 transitions. [2023-08-29 02:52:17,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 0 states have call successors, (0), 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 02:52:17,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:17,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:17,180 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 1053 transitions. [2023-08-29 02:52:17,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 461 flow [2023-08-29 02:52:17,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:52:17,183 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-29 02:52:17,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-29 02:52:17,183 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -22 predicate places. [2023-08-29 02:52:17,183 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-29 02:52:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.83333333333334) internal successors, (1001), 6 states have internal predecessors, (1001), 0 states have call successors, (0), 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 02:52:17,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:17,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:17,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 02:52:17,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:17,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1310531236, now seen corresponding path program 1 times [2023-08-29 02:52:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:17,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854369423] [2023-08-29 02:52:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:17,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:17,404 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 02:52:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854369423] [2023-08-29 02:52:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854369423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:17,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:17,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36761174] [2023-08-29 02:52:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:17,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:17,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:17,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 374 [2023-08-29 02:52:17,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 02:52:17,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:17,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 374 [2023-08-29 02:52:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:17,805 INFO L130 PetriNetUnfolder]: 704/1546 cut-off events. [2023-08-29 02:52:17,805 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2023-08-29 02:52:17,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 1546 events. 704/1546 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7209 event pairs, 637 based on Foata normal form. 15/1549 useless extension candidates. Maximal degree in co-relation 3380. Up to 1261 conditions per place. [2023-08-29 02:52:17,809 INFO L137 encePairwiseOnDemand]: 369/374 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-29 02:52:17,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 387 flow [2023-08-29 02:52:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1046 transitions. [2023-08-29 02:52:17,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2023-08-29 02:52:17,812 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1046 transitions. [2023-08-29 02:52:17,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1046 transitions. [2023-08-29 02:52:17,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:17,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1046 transitions. [2023-08-29 02:52:17,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 0 states have call successors, (0), 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 02:52:17,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:17,818 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 374.0) internal successors, (2618), 7 states have internal predecessors, (2618), 0 states have call successors, (0), 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 02:52:17,818 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 1046 transitions. [2023-08-29 02:52:17,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 387 flow [2023-08-29 02:52:17,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 377 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:52:17,820 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-29 02:52:17,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-29 02:52:17,821 INFO L281 CegarLoopForPetriNet]: 118 programPoint places, -26 predicate places. [2023-08-29 02:52:17,821 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-29 02:52:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 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 02:52:17,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-29 02:52:17,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-29 02:52:17,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-29 02:52:17,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-29 02:52:17,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-29 02:52:17,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-29 02:52:17,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-29 02:52:17,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:52:17,826 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:17,826 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:52:17,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,863 INFO L130 PetriNetUnfolder]: 31/359 cut-off events. [2023-08-29 02:52:17,863 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:17,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 359 events. 31/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1331 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 217. Up to 9 conditions per place. [2023-08-29 02:52:17,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 234 transitions, 486 flow [2023-08-29 02:52:17,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:17,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 234 transitions, 486 flow [2023-08-29 02:52:17,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 234 transitions, 486 flow [2023-08-29 02:52:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 234 transitions, 486 flow [2023-08-29 02:52:17,898 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-08-29 02:52:17,899 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:17,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 356 events. 31/356 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1329 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 214. Up to 9 conditions per place. [2023-08-29 02:52:17,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 23892 [2023-08-29 02:52:20,745 INFO L134 LiptonReduction]: Checked pairs total: 137579 [2023-08-29 02:52:20,745 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-29 02:52:20,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:52:20,747 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;@4802ce1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:20,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:52:20,752 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2023-08-29 02:52:20,752 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:52:20,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:52:20,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:52:20,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1468177436, now seen corresponding path program 1 times [2023-08-29 02:52:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:20,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031988599] [2023-08-29 02:52:20,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:20,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:52:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:20,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:52:20,790 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:52:20,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:52:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:52:20,791 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:52:20,791 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:52:20,792 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:52:20,792 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:52:20,817 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:52:20,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,879 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2023-08-29 02:52:20,879 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:52:20,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2334 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 367. Up to 16 conditions per place. [2023-08-29 02:52:20,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,890 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:20,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-29 02:52:20,949 INFO L130 PetriNetUnfolder]: 50/546 cut-off events. [2023-08-29 02:52:20,949 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:52:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 546 events. 50/546 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2334 event pairs, 1 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 367. Up to 16 conditions per place. [2023-08-29 02:52:20,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 49500 [2023-08-29 02:52:23,900 INFO L134 LiptonReduction]: Checked pairs total: 340631 [2023-08-29 02:52:23,900 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-29 02:52:23,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:52:23,902 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;@4802ce1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:23,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-29 02:52:23,903 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:52:23,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:23,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:23,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:52:23,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:23,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1818, now seen corresponding path program 1 times [2023-08-29 02:52:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:23,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923656807] [2023-08-29 02:52:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:23,908 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 02:52:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923656807] [2023-08-29 02:52:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923656807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:23,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:23,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:52:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324794039] [2023-08-29 02:52:23,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:23,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:52:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:52:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:52:23,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 461 [2023-08-29 02:52:23,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 178 transitions, 386 flow. Second operand has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 0 states have call successors, (0), 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 02:52:23,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:23,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 461 [2023-08-29 02:52:23,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:34,442 INFO L130 PetriNetUnfolder]: 65024/131180 cut-off events. [2023-08-29 02:52:34,442 INFO L131 PetriNetUnfolder]: For 1935/1935 co-relation queries the response was YES. [2023-08-29 02:52:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223000 conditions, 131180 events. 65024/131180 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 1484205 event pairs, 64813 based on Foata normal form. 13055/133293 useless extension candidates. Maximal degree in co-relation 120537. Up to 90463 conditions per place. [2023-08-29 02:52:35,151 INFO L137 encePairwiseOnDemand]: 437/461 looper letters, 53 selfloop transitions, 0 changer transitions 0/154 dead transitions. [2023-08-29 02:52:35,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 154 transitions, 444 flow [2023-08-29 02:52:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:52:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:52:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 627 transitions. [2023-08-29 02:52:35,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6800433839479393 [2023-08-29 02:52:35,154 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 627 transitions. [2023-08-29 02:52:35,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 627 transitions. [2023-08-29 02:52:35,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:35,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 627 transitions. [2023-08-29 02:52:35,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.5) internal successors, (627), 2 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:52:35,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 461.0) internal successors, (1383), 3 states have internal predecessors, (1383), 0 states have call successors, (0), 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 02:52:35,157 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 461.0) internal successors, (1383), 3 states have internal predecessors, (1383), 0 states have call successors, (0), 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 02:52:35,157 INFO L175 Difference]: Start difference. First operand has 162 places, 178 transitions, 386 flow. Second operand 2 states and 627 transitions. [2023-08-29 02:52:35,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 154 transitions, 444 flow [2023-08-29 02:52:35,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 154 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:35,161 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 338 flow [2023-08-29 02:52:35,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=338, PETRI_PLACES=159, PETRI_TRANSITIONS=154} [2023-08-29 02:52:35,162 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2023-08-29 02:52:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 338 flow [2023-08-29 02:52:35,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 275.5) internal successors, (551), 2 states have internal predecessors, (551), 0 states have call successors, (0), 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 02:52:35,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:35,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:52:35,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:35,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1569194000, now seen corresponding path program 1 times [2023-08-29 02:52:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434564906] [2023-08-29 02:52:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:35,181 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 02:52:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434564906] [2023-08-29 02:52:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434564906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355860378] [2023-08-29 02:52:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:35,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:35,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 461 [2023-08-29 02:52:35,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 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 02:52:35,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:35,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 461 [2023-08-29 02:52:35,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:51,275 INFO L130 PetriNetUnfolder]: 113278/217596 cut-off events. [2023-08-29 02:52:51,275 INFO L131 PetriNetUnfolder]: For 2642/2642 co-relation queries the response was YES. [2023-08-29 02:52:51,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376105 conditions, 217596 events. 113278/217596 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 3862. Compared 2444358 event pairs, 60422 based on Foata normal form. 0/202996 useless extension candidates. Maximal degree in co-relation 376099. Up to 155960 conditions per place. [2023-08-29 02:52:52,598 INFO L137 encePairwiseOnDemand]: 452/461 looper letters, 77 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-08-29 02:52:52,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 167 transitions, 536 flow [2023-08-29 02:52:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-08-29 02:52:52,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174981923355025 [2023-08-29 02:52:52,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-08-29 02:52:52,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-08-29 02:52:52,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:52,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-08-29 02:52:52,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 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 02:52:52,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 02:52:52,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 02:52:52,606 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 338 flow. Second operand 3 states and 854 transitions. [2023-08-29 02:52:52,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 167 transitions, 536 flow [2023-08-29 02:52:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:52,614 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 347 flow [2023-08-29 02:52:52,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2023-08-29 02:52:52,614 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -6 predicate places. [2023-08-29 02:52:52,615 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 347 flow [2023-08-29 02:52:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 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 02:52:52,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:52,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:52:52,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:52,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 73002515, now seen corresponding path program 1 times [2023-08-29 02:52:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:52,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717670257] [2023-08-29 02:52:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:52,635 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 02:52:52,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:52,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717670257] [2023-08-29 02:52:52,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717670257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:52,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:52,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:52,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740615705] [2023-08-29 02:52:52,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:52,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:52,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:52,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 461 [2023-08-29 02:52:52,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 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 02:52:52,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:52,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 461 [2023-08-29 02:52:52,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:53:04,068 INFO L130 PetriNetUnfolder]: 71570/144146 cut-off events. [2023-08-29 02:53:04,068 INFO L131 PetriNetUnfolder]: For 4256/4256 co-relation queries the response was YES. [2023-08-29 02:53:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248206 conditions, 144146 events. 71570/144146 cut-off events. For 4256/4256 co-relation queries the response was YES. Maximal size of possible extension queue 2913. Compared 1648811 event pairs, 66976 based on Foata normal form. 0/133901 useless extension candidates. Maximal degree in co-relation 248199. Up to 100055 conditions per place. [2023-08-29 02:53:04,956 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 66 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2023-08-29 02:53:04,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 165 transitions, 511 flow [2023-08-29 02:53:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:53:04,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:53:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-29 02:53:04,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370209689081706 [2023-08-29 02:53:04,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-29 02:53:04,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-29 02:53:04,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:53:04,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-29 02:53:04,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 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 02:53:04,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 02:53:04,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 02:53:04,963 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 347 flow. Second operand 3 states and 881 transitions. [2023-08-29 02:53:04,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 165 transitions, 511 flow [2023-08-29 02:53:04,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 165 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:53:04,968 INFO L231 Difference]: Finished difference. Result has 159 places, 152 transitions, 359 flow [2023-08-29 02:53:04,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=159, PETRI_TRANSITIONS=152} [2023-08-29 02:53:04,968 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2023-08-29 02:53:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 152 transitions, 359 flow [2023-08-29 02:53:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 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 02:53:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:53:04,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:53:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:53:04,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:53:04,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:53:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -383859213, now seen corresponding path program 1 times [2023-08-29 02:53:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:53:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276429474] [2023-08-29 02:53:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:53:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:05,009 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 02:53:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:53:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276429474] [2023-08-29 02:53:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276429474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:53:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624205659] [2023-08-29 02:53:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:53:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:53:05,012 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 02:53:05,014 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 02:53:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:05,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:53:05,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:53:05,115 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 02:53:05,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:53:05,129 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 02:53:05,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624205659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:53:05,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:53:05,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:53:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018515987] [2023-08-29 02:53:05,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:53:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:53:05,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:53:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:53:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:53:05,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 461 [2023-08-29 02:53:05,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 272.2857142857143) internal successors, (1906), 7 states have internal predecessors, (1906), 0 states have call successors, (0), 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 02:53:05,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:53:05,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 461 [2023-08-29 02:53:05,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:53:08,272 INFO L130 PetriNetUnfolder]: 18561/38221 cut-off events. [2023-08-29 02:53:08,272 INFO L131 PetriNetUnfolder]: For 8884/8884 co-relation queries the response was YES. [2023-08-29 02:53:08,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71824 conditions, 38221 events. 18561/38221 cut-off events. For 8884/8884 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 377621 event pairs, 3747 based on Foata normal form. 2707/40022 useless extension candidates. Maximal degree in co-relation 71815. Up to 18532 conditions per place. [2023-08-29 02:53:08,444 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 118 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2023-08-29 02:53:08,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 207 transitions, 714 flow [2023-08-29 02:53:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:53:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:53:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1742 transitions. [2023-08-29 02:53:08,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297903109182935 [2023-08-29 02:53:08,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1742 transitions. [2023-08-29 02:53:08,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1742 transitions. [2023-08-29 02:53:08,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:53:08,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1742 transitions. [2023-08-29 02:53:08,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 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 02:53:08,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:53:08,454 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:53:08,454 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 359 flow. Second operand 6 states and 1742 transitions. [2023-08-29 02:53:08,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 207 transitions, 714 flow [2023-08-29 02:53:08,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 706 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 02:53:08,463 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 306 flow [2023-08-29 02:53:08,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2023-08-29 02:53:08,463 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -19 predicate places. [2023-08-29 02:53:08,463 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 306 flow [2023-08-29 02:53:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.2857142857143) internal successors, (1906), 7 states have internal predecessors, (1906), 0 states have call successors, (0), 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 02:53:08,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:53:08,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:53:08,471 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 02:53:08,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:53:08,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:53:08,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:53:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2050408009, now seen corresponding path program 1 times [2023-08-29 02:53:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:53:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387701109] [2023-08-29 02:53:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:08,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:53:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:08,822 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 02:53:08,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:53:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387701109] [2023-08-29 02:53:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387701109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:53:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:53:08,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:53:08,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970952442] [2023-08-29 02:53:08,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:53:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:53:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:53:08,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:53:08,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:53:09,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 461 [2023-08-29 02:53:09,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 0 states have call successors, (0), 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 02:53:09,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:53:09,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 461 [2023-08-29 02:53:09,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:22,322 INFO L130 PetriNetUnfolder]: 590126/881568 cut-off events. [2023-08-29 02:54:22,323 INFO L131 PetriNetUnfolder]: For 247097/247097 co-relation queries the response was YES. [2023-08-29 02:54:25,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876788 conditions, 881568 events. 590126/881568 cut-off events. For 247097/247097 co-relation queries the response was YES. Maximal size of possible extension queue 10802. Compared 8035532 event pairs, 142080 based on Foata normal form. 0/850630 useless extension candidates. Maximal degree in co-relation 1876779. Up to 279054 conditions per place. [2023-08-29 02:54:28,356 INFO L137 encePairwiseOnDemand]: 395/461 looper letters, 346 selfloop transitions, 126 changer transitions 0/504 dead transitions. [2023-08-29 02:54:28,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 504 transitions, 2094 flow [2023-08-29 02:54:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:54:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:54:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2023-08-29 02:54:28,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178597252349964 [2023-08-29 02:54:28,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2023-08-29 02:54:28,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2023-08-29 02:54:28,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:28,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2023-08-29 02:54:28,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 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 02:54:28,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:54:28,367 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:54:28,367 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 306 flow. Second operand 6 states and 1709 transitions. [2023-08-29 02:54:28,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 504 transitions, 2094 flow [2023-08-29 02:54:28,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 504 transitions, 2061 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-29 02:54:28,535 INFO L231 Difference]: Finished difference. Result has 150 places, 268 transitions, 1245 flow [2023-08-29 02:54:28,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1245, PETRI_PLACES=150, PETRI_TRANSITIONS=268} [2023-08-29 02:54:28,536 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2023-08-29 02:54:28,536 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 268 transitions, 1245 flow [2023-08-29 02:54:28,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 208.66666666666666) internal successors, (1252), 6 states have internal predecessors, (1252), 0 states have call successors, (0), 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 02:54:28,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:28,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 02:54:28,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:54:28,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1503823645, now seen corresponding path program 1 times [2023-08-29 02:54:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:28,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838869279] [2023-08-29 02:54:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:28,679 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 02:54:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838869279] [2023-08-29 02:54:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838869279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:28,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:54:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797142552] [2023-08-29 02:54:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:54:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:54:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:54:28,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 461 [2023-08-29 02:54:28,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 268 transitions, 1245 flow. Second operand has 6 states, 6 states have (on average 204.66666666666666) internal successors, (1228), 6 states have internal predecessors, (1228), 0 states have call successors, (0), 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 02:54:28,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:28,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 461 [2023-08-29 02:54:28,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:21,519 INFO L130 PetriNetUnfolder]: 668432/1007688 cut-off events. [2023-08-29 02:56:21,519 INFO L131 PetriNetUnfolder]: For 680715/692511 co-relation queries the response was YES. [2023-08-29 02:56:27,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894423 conditions, 1007688 events. 668432/1007688 cut-off events. For 680715/692511 co-relation queries the response was YES. Maximal size of possible extension queue 12997. Compared 9419052 event pairs, 350398 based on Foata normal form. 5856/1006411 useless extension candidates. Maximal degree in co-relation 2894411. Up to 800927 conditions per place. [2023-08-29 02:56:34,075 INFO L137 encePairwiseOnDemand]: 415/461 looper letters, 435 selfloop transitions, 304 changer transitions 0/776 dead transitions. [2023-08-29 02:56:34,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 776 transitions, 5181 flow [2023-08-29 02:56:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:56:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:56:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1558 transitions. [2023-08-29 02:56:34,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632682574114244 [2023-08-29 02:56:34,107 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1558 transitions. [2023-08-29 02:56:34,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1558 transitions. [2023-08-29 02:56:34,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:34,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1558 transitions. [2023-08-29 02:56:34,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.6666666666667) internal successors, (1558), 6 states have internal predecessors, (1558), 0 states have call successors, (0), 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 02:56:34,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:56:34,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 02:56:34,113 INFO L175 Difference]: Start difference. First operand has 150 places, 268 transitions, 1245 flow. Second operand 6 states and 1558 transitions. [2023-08-29 02:56:34,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 776 transitions, 5181 flow [2023-08-29 02:56:34,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 776 transitions, 5181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:34,295 INFO L231 Difference]: Finished difference. Result has 159 places, 591 transitions, 4422 flow [2023-08-29 02:56:34,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4422, PETRI_PLACES=159, PETRI_TRANSITIONS=591} [2023-08-29 02:56:34,297 INFO L281 CegarLoopForPetriNet]: 162 programPoint places, -3 predicate places. [2023-08-29 02:56:34,297 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 591 transitions, 4422 flow [2023-08-29 02:56:34,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.66666666666666) internal successors, (1228), 6 states have internal predecessors, (1228), 0 states have call successors, (0), 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 02:56:34,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:34,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:56:34,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 02:56:34,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:56:34,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -277095731, now seen corresponding path program 1 times [2023-08-29 02:56:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:34,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323960860] [2023-08-29 02:56:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:34,675 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 02:56:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323960860] [2023-08-29 02:56:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323960860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:34,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:34,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:56:34,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237999494] [2023-08-29 02:56:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:56:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:56:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:56:35,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 461 [2023-08-29 02:56:35,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 591 transitions, 4422 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 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 02:56:35,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:35,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 461 [2023-08-29 02:56:35,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand