./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:57:48,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:57:48,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:57:48,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:57:48,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:57:48,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:57:48,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:57:48,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:57:48,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:57:48,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:57:48,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:57:48,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:57:48,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:57:48,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:57:48,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:57:48,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:57:48,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:57:48,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:57:48,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:57:48,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:57:48,864 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:57:48,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:57:48,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:57:48,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:57:48,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:57:48,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:57:48,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:57:48,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:57:48,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:57:48,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:57:48,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:57:48,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:57:48,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:57:48,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:57:48,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:57:48,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:57:48,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:57:48,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:57:48,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:57:48,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:57:48,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:57:48,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:57:48,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:57:48,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:57:48,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:57:48,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:57:48,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:57:48,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:57:48,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:57:48,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:57:48,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:57:48,922 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:57:48,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:57:48,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:57:48,923 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:57:48,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:57:48,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:57:48,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:57:48,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:57:48,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:57:48,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:57:48,925 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:57:48,925 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:57:48,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:57:48,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:57:48,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:57:48,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:57:48,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:57:48,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:57:48,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:48,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:57:48,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:57:48,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:57:48,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:57:48,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:57:48,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:57:48,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:57:48,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:57:48,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-04-18 15:57:49,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:57:49,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:57:49,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:57:49,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:57:49,161 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:57:49,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i [2022-04-18 15:57:49,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c678f3ee/eac4bf6f17234d58998428ec00d94d60/FLAG5ceea0960 [2022-04-18 15:57:49,676 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:57:49,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i [2022-04-18 15:57:49,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c678f3ee/eac4bf6f17234d58998428ec00d94d60/FLAG5ceea0960 [2022-04-18 15:57:50,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c678f3ee/eac4bf6f17234d58998428ec00d94d60 [2022-04-18 15:57:50,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:57:50,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:57:50,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:50,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:57:50,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:57:50,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77675bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50, skipping insertion in model container [2022-04-18 15:57:50,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:57:50,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:57:50,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i[46865,46878] [2022-04-18 15:57:50,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:50,577 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:57:50,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/sssc12.i[46865,46878] [2022-04-18 15:57:50,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:50,695 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:57:50,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50 WrapperNode [2022-04-18 15:57:50,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:50,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:50,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:57:50,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:57:50,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,766 INFO L137 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2022-04-18 15:57:50,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:50,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:57:50,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:57:50,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:57:50,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:57:50,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:57:50,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:57:50,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:57:50,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (1/1) ... [2022-04-18 15:57:50,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:57:50,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:57:50,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:57:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 15:57:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-04-18 15:57:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-04-18 15:57:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:57:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:57:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 15:57:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:57:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:57:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:57:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:57:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:57:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:57:50,909 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:57:51,002 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:57:51,003 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:57:51,284 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:57:51,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:57:51,351 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 15:57:51,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:51 BoogieIcfgContainer [2022-04-18 15:57:51,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:57:51,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:57:51,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:57:51,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:57:51,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:57:50" (1/3) ... [2022-04-18 15:57:51,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21aa653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:51, skipping insertion in model container [2022-04-18 15:57:51,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:50" (2/3) ... [2022-04-18 15:57:51,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21aa653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:51, skipping insertion in model container [2022-04-18 15:57:51,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:51" (3/3) ... [2022-04-18 15:57:51,369 INFO L111 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-04-18 15:57:51,375 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:57:51,375 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:57:51,375 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-04-18 15:57:51,375 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:57:51,428 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:51,465 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:51,471 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:57:51,471 INFO L341 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-04-18 15:57:51,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 149 transitions, 303 flow [2022-04-18 15:57:51,549 INFO L129 PetriNetUnfolder]: 8/161 cut-off events. [2022-04-18 15:57:51,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:51,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 161 events. 8/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2022-04-18 15:57:51,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 149 transitions, 303 flow [2022-04-18 15:57:51,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 149 transitions, 303 flow [2022-04-18 15:57:51,585 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2022-04-18 15:57:51,585 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:51,586 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:51,586 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:51,587 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1271010167, now seen corresponding path program 1 times [2022-04-18 15:57:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:51,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272116836] [2022-04-18 15:57:51,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:51,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272116836] [2022-04-18 15:57:51,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272116836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:51,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:51,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658508956] [2022-04-18 15:57:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:51,794 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:51,817 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 149 [2022-04-18 15:57:51,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:51,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:51,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 149 [2022-04-18 15:57:51,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:51,870 INFO L129 PetriNetUnfolder]: 3/136 cut-off events. [2022-04-18 15:57:51,870 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:51,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 136 events. 3/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 19/137 useless extension candidates. Maximal degree in co-relation 87. Up to 19 conditions per place. [2022-04-18 15:57:51,872 INFO L132 encePairwiseOnDemand]: 137/149 looper letters, 18 selfloop transitions, 2 changer transitions 1/132 dead transitions. [2022-04-18 15:57:51,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 132 transitions, 309 flow [2022-04-18 15:57:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-04-18 15:57:51,893 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8590604026845637 [2022-04-18 15:57:51,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-04-18 15:57:51,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-04-18 15:57:51,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:51,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-04-18 15:57:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:51,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:51,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:51,914 INFO L186 Difference]: Start difference. First operand has 145 places, 149 transitions, 303 flow. Second operand 3 states and 384 transitions. [2022-04-18 15:57:51,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 132 transitions, 309 flow [2022-04-18 15:57:51,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 132 transitions, 309 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:51,921 INFO L242 Difference]: Finished difference. Result has 134 places, 131 transitions, 271 flow [2022-04-18 15:57:51,923 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=134, PETRI_TRANSITIONS=131} [2022-04-18 15:57:51,927 INFO L335 CegarLoopForPetriNet]: 145 programPoint places, -11 predicate places. [2022-04-18 15:57:51,928 INFO L478 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 271 flow [2022-04-18 15:57:51,928 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:51,929 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:51,929 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:51,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:57:51,929 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash 520916139, now seen corresponding path program 1 times [2022-04-18 15:57:51,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:51,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784481176] [2022-04-18 15:57:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:52,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784481176] [2022-04-18 15:57:52,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784481176] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:52,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:52,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289514762] [2022-04-18 15:57:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:52,016 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:52,018 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 149 [2022-04-18 15:57:52,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:52,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 149 [2022-04-18 15:57:52,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:52,066 INFO L129 PetriNetUnfolder]: 3/134 cut-off events. [2022-04-18 15:57:52,068 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:52,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 3/134 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 122. Up to 7 conditions per place. [2022-04-18 15:57:52,070 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 6 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2022-04-18 15:57:52,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 130 transitions, 285 flow [2022-04-18 15:57:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-04-18 15:57:52,073 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8926174496644296 [2022-04-18 15:57:52,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-04-18 15:57:52,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-04-18 15:57:52,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:52,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-04-18 15:57:52,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,077 INFO L186 Difference]: Start difference. First operand has 134 places, 131 transitions, 271 flow. Second operand 3 states and 399 transitions. [2022-04-18 15:57:52,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 130 transitions, 285 flow [2022-04-18 15:57:52,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 130 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:52,085 INFO L242 Difference]: Finished difference. Result has 132 places, 130 transitions, 269 flow [2022-04-18 15:57:52,085 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2022-04-18 15:57:52,086 INFO L335 CegarLoopForPetriNet]: 145 programPoint places, -13 predicate places. [2022-04-18 15:57:52,086 INFO L478 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 269 flow [2022-04-18 15:57:52,087 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,087 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:52,087 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,088 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:57:52,088 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1090552516, now seen corresponding path program 1 times [2022-04-18 15:57:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526160972] [2022-04-18 15:57:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526160972] [2022-04-18 15:57:52,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526160972] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:52,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387447684] [2022-04-18 15:57:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:52,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:52,157 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 149 [2022-04-18 15:57:52,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:52,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 149 [2022-04-18 15:57:52,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:52,197 INFO L129 PetriNetUnfolder]: 3/133 cut-off events. [2022-04-18 15:57:52,197 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:52,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 133 events. 3/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 128. Up to 19 conditions per place. [2022-04-18 15:57:52,199 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 18 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-04-18 15:57:52,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 129 transitions, 307 flow [2022-04-18 15:57:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2022-04-18 15:57:52,201 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8389261744966443 [2022-04-18 15:57:52,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2022-04-18 15:57:52,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2022-04-18 15:57:52,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:52,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2022-04-18 15:57:52,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,204 INFO L186 Difference]: Start difference. First operand has 132 places, 130 transitions, 269 flow. Second operand 3 states and 375 transitions. [2022-04-18 15:57:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 129 transitions, 307 flow [2022-04-18 15:57:52,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 129 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:52,211 INFO L242 Difference]: Finished difference. Result has 131 places, 129 transitions, 267 flow [2022-04-18 15:57:52,211 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2022-04-18 15:57:52,213 INFO L335 CegarLoopForPetriNet]: 145 programPoint places, -14 predicate places. [2022-04-18 15:57:52,213 INFO L478 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 267 flow [2022-04-18 15:57:52,214 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:52,214 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,214 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:57:52,215 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:52,215 INFO L85 PathProgramCache]: Analyzing trace with hash 215070359, now seen corresponding path program 1 times [2022-04-18 15:57:52,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:52,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689425154] [2022-04-18 15:57:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:52,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:52,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689425154] [2022-04-18 15:57:52,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689425154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:52,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:52,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:52,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138236010] [2022-04-18 15:57:52,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:52,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:52,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:52,268 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 149 [2022-04-18 15:57:52,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:52,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 149 [2022-04-18 15:57:52,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:52,305 INFO L129 PetriNetUnfolder]: 3/129 cut-off events. [2022-04-18 15:57:52,305 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:57:52,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 129 events. 3/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 109. Up to 11 conditions per place. [2022-04-18 15:57:52,306 INFO L132 encePairwiseOnDemand]: 144/149 looper letters, 12 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2022-04-18 15:57:52,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 285 flow [2022-04-18 15:57:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-04-18 15:57:52,309 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8501118568232662 [2022-04-18 15:57:52,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-04-18 15:57:52,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-04-18 15:57:52,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:52,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-04-18 15:57:52,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,317 INFO L186 Difference]: Start difference. First operand has 131 places, 129 transitions, 267 flow. Second operand 3 states and 380 transitions. [2022-04-18 15:57:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 285 flow [2022-04-18 15:57:52,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:52,327 INFO L242 Difference]: Finished difference. Result has 127 places, 125 transitions, 257 flow [2022-04-18 15:57:52,327 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2022-04-18 15:57:52,329 INFO L335 CegarLoopForPetriNet]: 145 programPoint places, -18 predicate places. [2022-04-18 15:57:52,329 INFO L478 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 257 flow [2022-04-18 15:57:52,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:52,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:57:52,335 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash -560908456, now seen corresponding path program 1 times [2022-04-18 15:57:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:52,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205741900] [2022-04-18 15:57:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:52,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:52,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:52,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205741900] [2022-04-18 15:57:52,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205741900] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:52,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:52,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39911620] [2022-04-18 15:57:52,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:52,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:52,411 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 149 [2022-04-18 15:57:52,411 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 125 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:52,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 149 [2022-04-18 15:57:52,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:52,442 INFO L129 PetriNetUnfolder]: 3/128 cut-off events. [2022-04-18 15:57:52,443 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:57:52,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 128 events. 3/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 106. Up to 10 conditions per place. [2022-04-18 15:57:52,445 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 9 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2022-04-18 15:57:52,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 124 transitions, 277 flow [2022-04-18 15:57:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:52,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-04-18 15:57:52,447 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8791946308724832 [2022-04-18 15:57:52,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-04-18 15:57:52,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-04-18 15:57:52,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:52,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-04-18 15:57:52,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,451 INFO L186 Difference]: Start difference. First operand has 127 places, 125 transitions, 257 flow. Second operand 3 states and 393 transitions. [2022-04-18 15:57:52,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 124 transitions, 277 flow [2022-04-18 15:57:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:52,454 INFO L242 Difference]: Finished difference. Result has 127 places, 124 transitions, 258 flow [2022-04-18 15:57:52,454 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2022-04-18 15:57:52,457 INFO L335 CegarLoopForPetriNet]: 145 programPoint places, -18 predicate places. [2022-04-18 15:57:52,457 INFO L478 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 258 flow [2022-04-18 15:57:52,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:52,458 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:57:52,458 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:57:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1083154368, now seen corresponding path program 1 times [2022-04-18 15:57:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:52,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80267682] [2022-04-18 15:57:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:52,492 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:52,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:52,560 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:52,561 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-04-18 15:57:52,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-04-18 15:57:52,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-04-18 15:57:52,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-04-18 15:57:52,563 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-04-18 15:57:52,564 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-04-18 15:57:52,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-04-18 15:57:52,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-04-18 15:57:52,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-04-18 15:57:52,565 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-04-18 15:57:52,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-04-18 15:57:52,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-04-18 15:57:52,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-04-18 15:57:52,566 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-04-18 15:57:52,567 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-04-18 15:57:52,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-04-18 15:57:52,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-04-18 15:57:52,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-04-18 15:57:52,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-04-18 15:57:52,568 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-04-18 15:57:52,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-04-18 15:57:52,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-04-18 15:57:52,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-04-18 15:57:52,569 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-04-18 15:57:52,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-04-18 15:57:52,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-04-18 15:57:52,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-04-18 15:57:52,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-04-18 15:57:52,570 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-04-18 15:57:52,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-04-18 15:57:52,571 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-04-18 15:57:52,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:57:52,575 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,576 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:52,576 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:57:52,624 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:52,626 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:52,626 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:57:52,626 INFO L341 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-04-18 15:57:52,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 217 places, 224 transitions, 460 flow [2022-04-18 15:57:52,658 INFO L129 PetriNetUnfolder]: 14/250 cut-off events. [2022-04-18 15:57:52,659 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:57:52,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 250 events. 14/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 534 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2022-04-18 15:57:52,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 224 transitions, 460 flow [2022-04-18 15:57:52,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 224 transitions, 460 flow [2022-04-18 15:57:52,669 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2022-04-18 15:57:52,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:52,670 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:52,670 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:52,671 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2123027817, now seen corresponding path program 1 times [2022-04-18 15:57:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:52,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276785879] [2022-04-18 15:57:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:52,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:52,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276785879] [2022-04-18 15:57:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276785879] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057198742] [2022-04-18 15:57:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:52,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:52,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:52,719 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 224 [2022-04-18 15:57:52,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 224 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:52,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:52,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 224 [2022-04-18 15:57:52,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:52,983 INFO L129 PetriNetUnfolder]: 269/1283 cut-off events. [2022-04-18 15:57:52,984 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:57:52,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 1283 events. 269/1283 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9024 event pairs, 210 based on Foata normal form. 284/1305 useless extension candidates. Maximal degree in co-relation 1333. Up to 471 conditions per place. [2022-04-18 15:57:52,997 INFO L132 encePairwiseOnDemand]: 206/224 looper letters, 33 selfloop transitions, 2 changer transitions 1/200 dead transitions. [2022-04-18 15:57:52,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 200 transitions, 482 flow [2022-04-18 15:57:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-04-18 15:57:52,999 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-04-18 15:57:52,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-04-18 15:57:53,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-04-18 15:57:53,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:53,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-04-18 15:57:53,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,006 INFO L186 Difference]: Start difference. First operand has 217 places, 224 transitions, 460 flow. Second operand 3 states and 564 transitions. [2022-04-18 15:57:53,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 200 transitions, 482 flow [2022-04-18 15:57:53,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 200 transitions, 480 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:53,011 INFO L242 Difference]: Finished difference. Result has 201 places, 199 transitions, 412 flow [2022-04-18 15:57:53,011 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-04-18 15:57:53,013 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -16 predicate places. [2022-04-18 15:57:53,013 INFO L478 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 412 flow [2022-04-18 15:57:53,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:53,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:53,015 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:57:53,015 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1401682091, now seen corresponding path program 1 times [2022-04-18 15:57:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:53,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747276243] [2022-04-18 15:57:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:53,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747276243] [2022-04-18 15:57:53,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747276243] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:53,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:53,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485987938] [2022-04-18 15:57:53,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:53,049 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:53,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:53,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:53,051 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 224 [2022-04-18 15:57:53,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:53,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 224 [2022-04-18 15:57:53,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:53,106 INFO L129 PetriNetUnfolder]: 18/364 cut-off events. [2022-04-18 15:57:53,107 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-04-18 15:57:53,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 364 events. 18/364 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1305 event pairs, 6 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 378. Up to 22 conditions per place. [2022-04-18 15:57:53,111 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 9 selfloop transitions, 2 changer transitions 0/198 dead transitions. [2022-04-18 15:57:53,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 198 transitions, 432 flow [2022-04-18 15:57:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-04-18 15:57:53,114 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8883928571428571 [2022-04-18 15:57:53,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-04-18 15:57:53,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-04-18 15:57:53,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:53,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-04-18 15:57:53,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,119 INFO L186 Difference]: Start difference. First operand has 201 places, 199 transitions, 412 flow. Second operand 3 states and 597 transitions. [2022-04-18 15:57:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 198 transitions, 432 flow [2022-04-18 15:57:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 198 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:53,124 INFO L242 Difference]: Finished difference. Result has 199 places, 198 transitions, 410 flow [2022-04-18 15:57:53,124 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=199, PETRI_TRANSITIONS=198} [2022-04-18 15:57:53,125 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -18 predicate places. [2022-04-18 15:57:53,125 INFO L478 AbstractCegarLoop]: Abstraction has has 199 places, 198 transitions, 410 flow [2022-04-18 15:57:53,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,126 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:53,126 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:53,126 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:57:53,126 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:53,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 70860092, now seen corresponding path program 1 times [2022-04-18 15:57:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:53,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212987775] [2022-04-18 15:57:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:53,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:53,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212987775] [2022-04-18 15:57:53,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212987775] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:53,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:53,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220412948] [2022-04-18 15:57:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:53,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:53,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:53,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:53,164 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 224 [2022-04-18 15:57:53,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 198 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:53,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 224 [2022-04-18 15:57:53,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:53,342 INFO L129 PetriNetUnfolder]: 119/1001 cut-off events. [2022-04-18 15:57:53,343 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-04-18 15:57:53,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 1001 events. 119/1001 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6173 event pairs, 72 based on Foata normal form. 0/811 useless extension candidates. Maximal degree in co-relation 1186. Up to 180 conditions per place. [2022-04-18 15:57:53,353 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 27 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2022-04-18 15:57:53,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 197 transitions, 466 flow [2022-04-18 15:57:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2022-04-18 15:57:53,355 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8348214285714286 [2022-04-18 15:57:53,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2022-04-18 15:57:53,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2022-04-18 15:57:53,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:53,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2022-04-18 15:57:53,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,359 INFO L186 Difference]: Start difference. First operand has 199 places, 198 transitions, 410 flow. Second operand 3 states and 561 transitions. [2022-04-18 15:57:53,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 197 transitions, 466 flow [2022-04-18 15:57:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 197 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:53,363 INFO L242 Difference]: Finished difference. Result has 198 places, 197 transitions, 408 flow [2022-04-18 15:57:53,364 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=198, PETRI_TRANSITIONS=197} [2022-04-18 15:57:53,366 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -19 predicate places. [2022-04-18 15:57:53,366 INFO L478 AbstractCegarLoop]: Abstraction has has 198 places, 197 transitions, 408 flow [2022-04-18 15:57:53,366 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,367 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:53,367 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:53,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:57:53,367 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1617645929, now seen corresponding path program 1 times [2022-04-18 15:57:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095103393] [2022-04-18 15:57:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:53,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095103393] [2022-04-18 15:57:53,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095103393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:53,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:53,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:53,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90830850] [2022-04-18 15:57:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:53,422 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:53,424 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 224 [2022-04-18 15:57:53,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 197 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:53,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 224 [2022-04-18 15:57:53,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:53,537 INFO L129 PetriNetUnfolder]: 81/826 cut-off events. [2022-04-18 15:57:53,538 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-04-18 15:57:53,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 826 events. 81/826 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4693 event pairs, 42 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 925. Up to 107 conditions per place. [2022-04-18 15:57:53,545 INFO L132 encePairwiseOnDemand]: 217/224 looper letters, 19 selfloop transitions, 1 changer transitions 0/191 dead transitions. [2022-04-18 15:57:53,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 191 transitions, 436 flow [2022-04-18 15:57:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-04-18 15:57:53,547 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2022-04-18 15:57:53,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-04-18 15:57:53,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-04-18 15:57:53,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:53,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-04-18 15:57:53,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,552 INFO L186 Difference]: Start difference. First operand has 198 places, 197 transitions, 408 flow. Second operand 3 states and 566 transitions. [2022-04-18 15:57:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 191 transitions, 436 flow [2022-04-18 15:57:53,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 191 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:53,556 INFO L242 Difference]: Finished difference. Result has 192 places, 191 transitions, 394 flow [2022-04-18 15:57:53,556 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=192, PETRI_TRANSITIONS=191} [2022-04-18 15:57:53,557 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -25 predicate places. [2022-04-18 15:57:53,557 INFO L478 AbstractCegarLoop]: Abstraction has has 192 places, 191 transitions, 394 flow [2022-04-18 15:57:53,558 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,558 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:53,558 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:53,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:57:53,558 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 506370104, now seen corresponding path program 1 times [2022-04-18 15:57:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:53,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969252124] [2022-04-18 15:57:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:53,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:53,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969252124] [2022-04-18 15:57:53,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969252124] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:53,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:53,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117112140] [2022-04-18 15:57:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:53,590 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:53,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:53,593 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 224 [2022-04-18 15:57:53,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 191 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:53,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 224 [2022-04-18 15:57:53,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:53,677 INFO L129 PetriNetUnfolder]: 59/637 cut-off events. [2022-04-18 15:57:53,677 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:57:53,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 637 events. 59/637 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2872 event pairs, 30 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 710. Up to 84 conditions per place. [2022-04-18 15:57:53,684 INFO L132 encePairwiseOnDemand]: 221/224 looper letters, 15 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2022-04-18 15:57:53,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 190 transitions, 426 flow [2022-04-18 15:57:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2022-04-18 15:57:53,686 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8705357142857143 [2022-04-18 15:57:53,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2022-04-18 15:57:53,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2022-04-18 15:57:53,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:53,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2022-04-18 15:57:53,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,690 INFO L186 Difference]: Start difference. First operand has 192 places, 191 transitions, 394 flow. Second operand 3 states and 585 transitions. [2022-04-18 15:57:53,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 190 transitions, 426 flow [2022-04-18 15:57:53,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 190 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:53,694 INFO L242 Difference]: Finished difference. Result has 192 places, 190 transitions, 395 flow [2022-04-18 15:57:53,695 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=192, PETRI_TRANSITIONS=190} [2022-04-18 15:57:53,696 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -25 predicate places. [2022-04-18 15:57:53,696 INFO L478 AbstractCegarLoop]: Abstraction has has 192 places, 190 transitions, 395 flow [2022-04-18 15:57:53,697 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,697 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:53,697 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:53,697 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:57:53,697 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1488345119, now seen corresponding path program 1 times [2022-04-18 15:57:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046785028] [2022-04-18 15:57:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:53,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:53,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046785028] [2022-04-18 15:57:53,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046785028] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:53,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:53,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:53,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056518574] [2022-04-18 15:57:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:53,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:53,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:53,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:53,754 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 224 [2022-04-18 15:57:53,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 190 transitions, 395 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:53,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:53,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 224 [2022-04-18 15:57:53,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:53,994 INFO L129 PetriNetUnfolder]: 290/1973 cut-off events. [2022-04-18 15:57:53,994 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-04-18 15:57:54,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 1973 events. 290/1973 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 16035 event pairs, 83 based on Foata normal form. 0/1687 useless extension candidates. Maximal degree in co-relation 2442. Up to 280 conditions per place. [2022-04-18 15:57:54,012 INFO L132 encePairwiseOnDemand]: 204/224 looper letters, 41 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2022-04-18 15:57:54,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 213 transitions, 556 flow [2022-04-18 15:57:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-04-18 15:57:54,015 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8675595238095238 [2022-04-18 15:57:54,015 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-04-18 15:57:54,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-04-18 15:57:54,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:54,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-04-18 15:57:54,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:54,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:54,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:54,019 INFO L186 Difference]: Start difference. First operand has 192 places, 190 transitions, 395 flow. Second operand 3 states and 583 transitions. [2022-04-18 15:57:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 213 transitions, 556 flow [2022-04-18 15:57:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 213 transitions, 552 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:54,023 INFO L242 Difference]: Finished difference. Result has 194 places, 204 transitions, 515 flow [2022-04-18 15:57:54,023 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=194, PETRI_TRANSITIONS=204} [2022-04-18 15:57:54,024 INFO L335 CegarLoopForPetriNet]: 217 programPoint places, -23 predicate places. [2022-04-18 15:57:54,024 INFO L478 AbstractCegarLoop]: Abstraction has has 194 places, 204 transitions, 515 flow [2022-04-18 15:57:54,024 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:54,025 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:54,025 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:54,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:57:54,025 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-04-18 15:57:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1791564932, now seen corresponding path program 1 times [2022-04-18 15:57:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:54,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192195586] [2022-04-18 15:57:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:54,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:54,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:54,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:54,056 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:54,056 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (41 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (40 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (39 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (38 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (37 of 43 remaining) [2022-04-18 15:57:54,057 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (36 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (35 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (34 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (33 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (32 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (31 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (30 of 43 remaining) [2022-04-18 15:57:54,058 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (29 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (28 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (27 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (26 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (25 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (24 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (23 of 43 remaining) [2022-04-18 15:57:54,059 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (22 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (21 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (20 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (19 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (18 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (17 of 43 remaining) [2022-04-18 15:57:54,060 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (16 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (15 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (14 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (13 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (12 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 43 remaining) [2022-04-18 15:57:54,061 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (8 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (7 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (6 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (5 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (4 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (3 of 43 remaining) [2022-04-18 15:57:54,062 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (2 of 43 remaining) [2022-04-18 15:57:54,063 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (1 of 43 remaining) [2022-04-18 15:57:54,063 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (0 of 43 remaining) [2022-04-18 15:57:54,063 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:57:54,063 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:54,064 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:57:54,064 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:57:54,107 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:54,109 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:54,109 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:57:54,109 INFO L341 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-04-18 15:57:54,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 299 transitions, 619 flow [2022-04-18 15:57:54,150 INFO L129 PetriNetUnfolder]: 20/339 cut-off events. [2022-04-18 15:57:54,150 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:57:54,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 339 events. 20/339 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1027 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 254. Up to 8 conditions per place. [2022-04-18 15:57:54,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 299 transitions, 619 flow [2022-04-18 15:57:54,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 299 transitions, 619 flow [2022-04-18 15:57:54,162 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2022-04-18 15:57:54,162 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:54,162 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:54,162 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:54,163 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:57:54,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash 421925076, now seen corresponding path program 1 times [2022-04-18 15:57:54,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:54,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761827705] [2022-04-18 15:57:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:54,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:54,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761827705] [2022-04-18 15:57:54,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761827705] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:54,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:54,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315818025] [2022-04-18 15:57:54,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:54,180 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:54,182 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 299 [2022-04-18 15:57:54,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 299 transitions, 619 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:54,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:54,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 299 [2022-04-18 15:57:54,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:56,960 INFO L129 PetriNetUnfolder]: 7598/21155 cut-off events. [2022-04-18 15:57:56,961 INFO L130 PetriNetUnfolder]: For 1447/1447 co-relation queries the response was YES. [2022-04-18 15:57:57,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32785 conditions, 21155 events. 7598/21155 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 238841 event pairs, 6510 based on Foata normal form. 4722/21126 useless extension candidates. Maximal degree in co-relation 14969. Up to 10626 conditions per place. [2022-04-18 15:57:57,286 INFO L132 encePairwiseOnDemand]: 275/299 looper letters, 48 selfloop transitions, 2 changer transitions 1/268 dead transitions. [2022-04-18 15:57:57,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 268 transitions, 657 flow [2022-04-18 15:57:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2022-04-18 15:57:57,406 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8294314381270903 [2022-04-18 15:57:57,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2022-04-18 15:57:57,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2022-04-18 15:57:57,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2022-04-18 15:57:57,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,410 INFO L186 Difference]: Start difference. First operand has 289 places, 299 transitions, 619 flow. Second operand 3 states and 744 transitions. [2022-04-18 15:57:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 268 transitions, 657 flow [2022-04-18 15:57:57,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 268 transitions, 651 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:57:57,416 INFO L242 Difference]: Finished difference. Result has 268 places, 267 transitions, 553 flow [2022-04-18 15:57:57,416 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=553, PETRI_PLACES=268, PETRI_TRANSITIONS=267} [2022-04-18 15:57:57,417 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -21 predicate places. [2022-04-18 15:57:57,417 INFO L478 AbstractCegarLoop]: Abstraction has has 268 places, 267 transitions, 553 flow [2022-04-18 15:57:57,417 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,417 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,418 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:57:57,418 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:57:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1755967861, now seen corresponding path program 1 times [2022-04-18 15:57:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386015806] [2022-04-18 15:57:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386015806] [2022-04-18 15:57:57,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386015806] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843349251] [2022-04-18 15:57:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,442 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:57,444 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 299 [2022-04-18 15:57:57,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 267 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 299 [2022-04-18 15:57:57,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:57,595 INFO L129 PetriNetUnfolder]: 81/1072 cut-off events. [2022-04-18 15:57:57,595 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-04-18 15:57:57,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 1072 events. 81/1072 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6989 event pairs, 42 based on Foata normal form. 0/904 useless extension candidates. Maximal degree in co-relation 1182. Up to 85 conditions per place. [2022-04-18 15:57:57,615 INFO L132 encePairwiseOnDemand]: 296/299 looper letters, 12 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2022-04-18 15:57:57,615 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 266 transitions, 579 flow [2022-04-18 15:57:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-04-18 15:57:57,618 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8862876254180602 [2022-04-18 15:57:57,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-04-18 15:57:57,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-04-18 15:57:57,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:57,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-04-18 15:57:57,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,622 INFO L186 Difference]: Start difference. First operand has 268 places, 267 transitions, 553 flow. Second operand 3 states and 795 transitions. [2022-04-18 15:57:57,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 266 transitions, 579 flow [2022-04-18 15:57:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 266 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:57,628 INFO L242 Difference]: Finished difference. Result has 266 places, 266 transitions, 551 flow [2022-04-18 15:57:57,628 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=551, PETRI_PLACES=266, PETRI_TRANSITIONS=266} [2022-04-18 15:57:57,629 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -23 predicate places. [2022-04-18 15:57:57,629 INFO L478 AbstractCegarLoop]: Abstraction has has 266 places, 266 transitions, 551 flow [2022-04-18 15:57:57,629 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,629 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:57,630 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:57,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:57:57,630 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:57:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 68047676, now seen corresponding path program 1 times [2022-04-18 15:57:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:57,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260657950] [2022-04-18 15:57:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260657950] [2022-04-18 15:57:57,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260657950] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:57,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634195485] [2022-04-18 15:57:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:57,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:57,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:57,651 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 299 [2022-04-18 15:57:57,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 266 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:57,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:57,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 299 [2022-04-18 15:57:57,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:58,797 INFO L129 PetriNetUnfolder]: 1904/9917 cut-off events. [2022-04-18 15:57:58,798 INFO L130 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-04-18 15:57:58,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 9917 events. 1904/9917 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 111591 event pairs, 1368 based on Foata normal form. 0/7827 useless extension candidates. Maximal degree in co-relation 12534. Up to 2355 conditions per place. [2022-04-18 15:57:58,891 INFO L132 encePairwiseOnDemand]: 296/299 looper letters, 36 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-04-18 15:57:58,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 265 transitions, 625 flow [2022-04-18 15:57:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2022-04-18 15:57:58,894 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8327759197324415 [2022-04-18 15:57:58,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2022-04-18 15:57:58,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2022-04-18 15:57:58,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:58,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2022-04-18 15:57:58,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,898 INFO L186 Difference]: Start difference. First operand has 266 places, 266 transitions, 551 flow. Second operand 3 states and 747 transitions. [2022-04-18 15:57:58,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 265 transitions, 625 flow [2022-04-18 15:57:58,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 265 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:58,903 INFO L242 Difference]: Finished difference. Result has 265 places, 265 transitions, 549 flow [2022-04-18 15:57:58,904 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=549, PETRI_PLACES=265, PETRI_TRANSITIONS=265} [2022-04-18 15:57:58,904 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -24 predicate places. [2022-04-18 15:57:58,904 INFO L478 AbstractCegarLoop]: Abstraction has has 265 places, 265 transitions, 549 flow [2022-04-18 15:57:58,905 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,905 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:58,905 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:58,905 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 15:57:58,905 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:57:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -478464169, now seen corresponding path program 1 times [2022-04-18 15:57:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:58,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387587200] [2022-04-18 15:57:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:58,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:58,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387587200] [2022-04-18 15:57:58,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387587200] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:58,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:58,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895492160] [2022-04-18 15:57:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:58,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:58,942 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 299 [2022-04-18 15:57:58,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 265 transitions, 549 flow. Second operand has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:58,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:58,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 299 [2022-04-18 15:57:58,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:59,758 INFO L129 PetriNetUnfolder]: 984/6462 cut-off events. [2022-04-18 15:57:59,758 INFO L130 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2022-04-18 15:57:59,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7775 conditions, 6462 events. 984/6462 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 68658 event pairs, 630 based on Foata normal form. 0/5423 useless extension candidates. Maximal degree in co-relation 7731. Up to 1118 conditions per place. [2022-04-18 15:57:59,820 INFO L132 encePairwiseOnDemand]: 290/299 looper letters, 26 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2022-04-18 15:57:59,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 257 transitions, 587 flow [2022-04-18 15:57:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2022-04-18 15:57:59,823 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8383500557413601 [2022-04-18 15:57:59,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2022-04-18 15:57:59,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2022-04-18 15:57:59,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:59,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2022-04-18 15:57:59,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,828 INFO L186 Difference]: Start difference. First operand has 265 places, 265 transitions, 549 flow. Second operand 3 states and 752 transitions. [2022-04-18 15:57:59,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 257 transitions, 587 flow [2022-04-18 15:57:59,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 257 transitions, 583 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:59,833 INFO L242 Difference]: Finished difference. Result has 257 places, 257 transitions, 531 flow [2022-04-18 15:57:59,833 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=531, PETRI_PLACES=257, PETRI_TRANSITIONS=257} [2022-04-18 15:57:59,834 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -32 predicate places. [2022-04-18 15:57:59,834 INFO L478 AbstractCegarLoop]: Abstraction has has 257 places, 257 transitions, 531 flow [2022-04-18 15:57:59,835 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,835 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:59,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:59,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-18 15:57:59,835 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:57:59,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 972298339, now seen corresponding path program 1 times [2022-04-18 15:57:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:59,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001378329] [2022-04-18 15:57:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:57:59,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001378329] [2022-04-18 15:57:59,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001378329] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:59,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:59,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575552819] [2022-04-18 15:57:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:59,860 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:59,862 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 299 [2022-04-18 15:57:59,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 257 transitions, 531 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:57:59,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:59,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 299 [2022-04-18 15:57:59,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:00,370 INFO L129 PetriNetUnfolder]: 619/4053 cut-off events. [2022-04-18 15:58:00,370 INFO L130 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2022-04-18 15:58:00,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 4053 events. 619/4053 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 36308 event pairs, 390 based on Foata normal form. 0/3358 useless extension candidates. Maximal degree in co-relation 4914. Up to 752 conditions per place. [2022-04-18 15:58:00,425 INFO L132 encePairwiseOnDemand]: 296/299 looper letters, 21 selfloop transitions, 2 changer transitions 0/256 dead transitions. [2022-04-18 15:58:00,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 256 transitions, 575 flow [2022-04-18 15:58:00,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2022-04-18 15:58:00,428 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-04-18 15:58:00,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2022-04-18 15:58:00,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2022-04-18 15:58:00,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:00,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2022-04-18 15:58:00,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,433 INFO L186 Difference]: Start difference. First operand has 257 places, 257 transitions, 531 flow. Second operand 3 states and 777 transitions. [2022-04-18 15:58:00,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 256 transitions, 575 flow [2022-04-18 15:58:00,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 256 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:58:00,438 INFO L242 Difference]: Finished difference. Result has 257 places, 256 transitions, 532 flow [2022-04-18 15:58:00,438 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=257, PETRI_TRANSITIONS=256} [2022-04-18 15:58:00,439 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -32 predicate places. [2022-04-18 15:58:00,439 INFO L478 AbstractCegarLoop]: Abstraction has has 257 places, 256 transitions, 532 flow [2022-04-18 15:58:00,439 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:00,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:00,440 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:00,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 15:58:00,440 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:58:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1346091178, now seen corresponding path program 1 times [2022-04-18 15:58:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307560430] [2022-04-18 15:58:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:00,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:00,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307560430] [2022-04-18 15:58:00,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307560430] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:00,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:00,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405895122] [2022-04-18 15:58:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:00,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:00,473 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-04-18 15:58:00,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 256 transitions, 532 flow. Second operand has 3 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) [2022-04-18 15:58:00,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:00,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-04-18 15:58:00,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:58:04,212 INFO L129 PetriNetUnfolder]: 8905/34992 cut-off events. [2022-04-18 15:58:04,213 INFO L130 PetriNetUnfolder]: For 721/721 co-relation queries the response was YES. [2022-04-18 15:58:04,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47917 conditions, 34992 events. 8905/34992 cut-off events. For 721/721 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 478334 event pairs, 3043 based on Foata normal form. 0/29108 useless extension candidates. Maximal degree in co-relation 47873. Up to 7470 conditions per place. [2022-04-18 15:58:04,695 INFO L132 encePairwiseOnDemand]: 269/299 looper letters, 61 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2022-04-18 15:58:04,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 291 transitions, 776 flow [2022-04-18 15:58:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:58:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:58:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-04-18 15:58:04,697 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8606465997770345 [2022-04-18 15:58:04,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-04-18 15:58:04,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-04-18 15:58:04,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:58:04,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-04-18 15:58:04,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 299.0) internal successors, (1196), 4 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,702 INFO L186 Difference]: Start difference. First operand has 257 places, 256 transitions, 532 flow. Second operand 3 states and 772 transitions. [2022-04-18 15:58:04,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 291 transitions, 776 flow [2022-04-18 15:58:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 772 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:58:04,707 INFO L242 Difference]: Finished difference. Result has 259 places, 277 transitions, 714 flow [2022-04-18 15:58:04,708 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=714, PETRI_PLACES=259, PETRI_TRANSITIONS=277} [2022-04-18 15:58:04,708 INFO L335 CegarLoopForPetriNet]: 289 programPoint places, -30 predicate places. [2022-04-18 15:58:04,708 INFO L478 AbstractCegarLoop]: Abstraction has has 259 places, 277 transitions, 714 flow [2022-04-18 15:58:04,709 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-04-18 15:58:04,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:04,709 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,709 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 15:58:04,709 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 15:58:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1279858730, now seen corresponding path program 1 times [2022-04-18 15:58:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494680539] [2022-04-18 15:58:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:04,727 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:58:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:58:04,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:58:04,754 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:58:04,754 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (53 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (52 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (51 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (50 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (49 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (48 of 55 remaining) [2022-04-18 15:58:04,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (47 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (46 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (45 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (44 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (43 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (42 of 55 remaining) [2022-04-18 15:58:04,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (41 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (40 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (39 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (38 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (37 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (36 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (35 of 55 remaining) [2022-04-18 15:58:04,757 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (34 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (33 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (32 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (31 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (30 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (29 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (28 of 55 remaining) [2022-04-18 15:58:04,758 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (27 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (26 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (25 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (24 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (23 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (22 of 55 remaining) [2022-04-18 15:58:04,759 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (21 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (20 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (19 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (18 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (17 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (16 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (15 of 55 remaining) [2022-04-18 15:58:04,760 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (14 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (13 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (12 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (8 of 55 remaining) [2022-04-18 15:58:04,761 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (7 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (6 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr8ASSERT_VIOLATIONDATA_RACE (5 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (4 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr9ASSERT_VIOLATIONDATA_RACE (3 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (2 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr10ASSERT_VIOLATIONDATA_RACE (1 of 55 remaining) [2022-04-18 15:58:04,762 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr11ASSERT_VIOLATIONDATA_RACE (0 of 55 remaining) [2022-04-18 15:58:04,763 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-18 15:58:04,763 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,763 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:58:04,764 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:58:04,810 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:58:04,811 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:58:04,812 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:58:04,812 INFO L341 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-04-18 15:58:04,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 374 transitions, 780 flow [2022-04-18 15:58:04,869 INFO L129 PetriNetUnfolder]: 26/428 cut-off events. [2022-04-18 15:58:04,869 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:58:04,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 428 events. 26/428 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1539 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 347. Up to 10 conditions per place. [2022-04-18 15:58:04,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 361 places, 374 transitions, 780 flow [2022-04-18 15:58:04,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 374 transitions, 780 flow [2022-04-18 15:58:04,882 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2022-04-18 15:58:04,883 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:58:04,883 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:58:04,883 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:58:04,883 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 64 more)] === [2022-04-18 15:58:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:58:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2079351094, now seen corresponding path program 1 times [2022-04-18 15:58:04,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:58:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012555226] [2022-04-18 15:58:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:58:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:58:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:58:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:58:04,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:58:04,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012555226] [2022-04-18 15:58:04,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012555226] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:58:04,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:58:04,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:58:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332764510] [2022-04-18 15:58:04,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:58:04,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:58:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:58:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:58:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:58:04,901 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 374 [2022-04-18 15:58:04,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 374 transitions, 780 flow. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:58:04,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:58:04,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 374 [2022-04-18 15:58:04,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand