./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:49:44,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:49:44,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:49:44,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:49:44,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:49:44,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:49:44,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:49:44,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:49:44,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:49:44,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:49:44,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:49:44,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:49:44,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:49:44,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:49:44,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:49:44,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:49:44,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:49:44,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:49:44,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:49:44,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:49:44,821 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:49:44,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:49:44,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:49:44,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:49:44,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:49:44,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:49:44,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:49:44,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:49:44,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:49:44,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:49:44,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:49:44,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:49:44,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:49:44,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:49:44,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:49:44,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:49:44,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:49:44,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:49:44,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:49:44,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:49:44,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:49:44,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:49:44,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:49:44,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:49:44,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:49:44,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:49:44,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:49:44,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:49:44,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:49:44,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:49:44,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:49:44,868 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:49:44,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:49:44,869 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:49:44,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:49:44,870 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:49:44,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:49:44,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:49:44,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:44,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:49:44,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:49:44,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:49:44,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:49:44,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:49:44,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:49:44,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:49:44,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:49:44,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2022-04-18 15:49:45,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:49:45,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:49:45,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:49:45,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:49:45,111 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:49:45,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-04-18 15:49:45,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad85ec5ed/0cfc5a2aa1554dd6bcb505b367403e7e/FLAGb24a56aea [2022-04-18 15:49:45,560 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:49:45,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2022-04-18 15:49:45,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad85ec5ed/0cfc5a2aa1554dd6bcb505b367403e7e/FLAGb24a56aea [2022-04-18 15:49:45,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad85ec5ed/0cfc5a2aa1554dd6bcb505b367403e7e [2022-04-18 15:49:45,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:45,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:45,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:45,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:45,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:45,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d92658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45, skipping insertion in model container [2022-04-18 15:49:45,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:45,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:46,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-04-18 15:49:46,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:46,196 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:46,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i[30176,30189] [2022-04-18 15:49:46,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:46,278 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:46,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46 WrapperNode [2022-04-18 15:49:46,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:46,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:46,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:46,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:46,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,323 INFO L137 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-04-18 15:49:46,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:46,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:46,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:46,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:46,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:46,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:46,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:46,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:46,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (1/1) ... [2022-04-18 15:49:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:46,447 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 15:49:46,456 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 15:49:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:49:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:49:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:46,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:46,481 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 15:49:46,599 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:46,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:46,904 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:46,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:46,910 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-04-18 15:49:46,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:46 BoogieIcfgContainer [2022-04-18 15:49:46,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:46,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:46,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:46,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:46,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:45" (1/3) ... [2022-04-18 15:49:46,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:46, skipping insertion in model container [2022-04-18 15:49:46,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:46" (2/3) ... [2022-04-18 15:49:46,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:46, skipping insertion in model container [2022-04-18 15:49:46,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:46" (3/3) ... [2022-04-18 15:49:46,917 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2022-04-18 15:49:46,920 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:46,921 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:46,921 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-04-18 15:49:46,921 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:46,968 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:49:46,998 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:47,003 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 15:49:47,003 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-04-18 15:49:47,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 178 transitions, 364 flow [2022-04-18 15:49:47,080 INFO L129 PetriNetUnfolder]: 17/230 cut-off events. [2022-04-18 15:49:47,080 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:49:47,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 230 events. 17/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 684 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 123. Up to 4 conditions per place. [2022-04-18 15:49:47,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 178 transitions, 364 flow [2022-04-18 15:49:47,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 178 transitions, 364 flow [2022-04-18 15:49:47,108 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2022-04-18 15:49:47,109 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:47,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,110 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] [2022-04-18 15:49:47,110 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -621177877, now seen corresponding path program 1 times [2022-04-18 15:49:47,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135256424] [2022-04-18 15:49:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,257 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 15:49:47,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135256424] [2022-04-18 15:49:47,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135256424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098022442] [2022-04-18 15:49:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,266 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,287 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-04-18 15:49:47,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 178 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 15:49:47,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-04-18 15:49:47,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,340 INFO L129 PetriNetUnfolder]: 1/211 cut-off events. [2022-04-18 15:49:47,340 INFO L130 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-04-18 15:49:47,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 211 events. 1/211 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 356 event pairs, 0 based on Foata normal form. 22/213 useless extension candidates. Maximal degree in co-relation 4. Up to 15 conditions per place. [2022-04-18 15:49:47,342 INFO L132 encePairwiseOnDemand]: 164/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/165 dead transitions. [2022-04-18 15:49:47,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 364 flow [2022-04-18 15:49:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-04-18 15:49:47,356 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.900749063670412 [2022-04-18 15:49:47,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 15:49:47,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,373 INFO L186 Difference]: Start difference. First operand has 169 places, 178 transitions, 364 flow. Second operand 3 states and 481 transitions. [2022-04-18 15:49:47,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 364 flow [2022-04-18 15:49:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:47,382 INFO L242 Difference]: Finished difference. Result has 169 places, 165 transitions, 342 flow [2022-04-18 15:49:47,384 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2022-04-18 15:49:47,388 INFO L335 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-04-18 15:49:47,388 INFO L478 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 342 flow [2022-04-18 15:49:47,389 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 15:49:47,389 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,390 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] [2022-04-18 15:49:47,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:47,390 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,391 INFO L85 PathProgramCache]: Analyzing trace with hash 48527258, now seen corresponding path program 1 times [2022-04-18 15:49:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337486706] [2022-04-18 15:49:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,441 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 15:49:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337486706] [2022-04-18 15:49:47,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337486706] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846252366] [2022-04-18 15:49:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,443 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,445 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-04-18 15:49:47,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 15:49:47,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-04-18 15:49:47,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,482 INFO L129 PetriNetUnfolder]: 1/208 cut-off events. [2022-04-18 15:49:47,482 INFO L130 PetriNetUnfolder]: For 5/8 co-relation queries the response was YES. [2022-04-18 15:49:47,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 208 events. 1/208 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 345 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 183. Up to 8 conditions per place. [2022-04-18 15:49:47,483 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/163 dead transitions. [2022-04-18 15:49:47,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 354 flow [2022-04-18 15:49:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-04-18 15:49:47,486 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-04-18 15:49:47,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 15:49:47,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,493 INFO L186 Difference]: Start difference. First operand has 169 places, 165 transitions, 342 flow. Second operand 3 states and 475 transitions. [2022-04-18 15:49:47,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 354 flow [2022-04-18 15:49:47,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 163 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:47,499 INFO L242 Difference]: Finished difference. Result has 167 places, 163 transitions, 336 flow [2022-04-18 15:49:47,499 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-04-18 15:49:47,500 INFO L335 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-04-18 15:49:47,500 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 336 flow [2022-04-18 15:49:47,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 15:49:47,501 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,501 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:47,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:47,502 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2030100948, now seen corresponding path program 1 times [2022-04-18 15:49:47,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726116347] [2022-04-18 15:49:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,563 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 15:49:47,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726116347] [2022-04-18 15:49:47,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726116347] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718036201] [2022-04-18 15:49:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,565 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,566 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 178 [2022-04-18 15:49:47,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 15:49:47,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 178 [2022-04-18 15:49:47,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,593 INFO L129 PetriNetUnfolder]: 1/207 cut-off events. [2022-04-18 15:49:47,594 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-04-18 15:49:47,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 207 events. 1/207 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 343 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 187. Up to 12 conditions per place. [2022-04-18 15:49:47,594 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 11 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2022-04-18 15:49:47,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 360 flow [2022-04-18 15:49:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-04-18 15:49:47,596 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8801498127340824 [2022-04-18 15:49:47,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-04-18 15:49:47,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-04-18 15:49:47,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-04-18 15:49:47,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 15:49:47,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,599 INFO L186 Difference]: Start difference. First operand has 167 places, 163 transitions, 336 flow. Second operand 3 states and 470 transitions. [2022-04-18 15:49:47,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 360 flow [2022-04-18 15:49:47,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:47,602 INFO L242 Difference]: Finished difference. Result has 167 places, 162 transitions, 337 flow [2022-04-18 15:49:47,602 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-04-18 15:49:47,603 INFO L335 CegarLoopForPetriNet]: 169 programPoint places, -2 predicate places. [2022-04-18 15:49:47,603 INFO L478 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 337 flow [2022-04-18 15:49:47,604 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 15:49:47,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,604 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] [2022-04-18 15:49:47,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:47,604 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash 613365282, now seen corresponding path program 1 times [2022-04-18 15:49:47,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366534132] [2022-04-18 15:49:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,649 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 15:49:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366534132] [2022-04-18 15:49:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366534132] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852124372] [2022-04-18 15:49:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,652 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 178 [2022-04-18 15:49:47,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 15:49:47,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 178 [2022-04-18 15:49:47,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,694 INFO L129 PetriNetUnfolder]: 0/181 cut-off events. [2022-04-18 15:49:47,695 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-04-18 15:49:47,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 181 events. 0/181 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 166 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-04-18 15:49:47,695 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 9 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-04-18 15:49:47,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 363 flow [2022-04-18 15:49:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-04-18 15:49:47,697 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9044943820224719 [2022-04-18 15:49:47,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-04-18 15:49:47,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-04-18 15:49:47,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-04-18 15:49:47,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 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 15:49:47,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,700 INFO L186 Difference]: Start difference. First operand has 167 places, 162 transitions, 337 flow. Second operand 3 states and 483 transitions. [2022-04-18 15:49:47,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 363 flow [2022-04-18 15:49:47,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:47,703 INFO L242 Difference]: Finished difference. Result has 168 places, 162 transitions, 341 flow [2022-04-18 15:49:47,703 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2022-04-18 15:49:47,704 INFO L335 CegarLoopForPetriNet]: 169 programPoint places, -1 predicate places. [2022-04-18 15:49:47,704 INFO L478 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 341 flow [2022-04-18 15:49:47,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 15:49:47,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,705 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] [2022-04-18 15:49:47,705 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:47,705 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash -176435115, now seen corresponding path program 1 times [2022-04-18 15:49:47,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287381207] [2022-04-18 15:49:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,736 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 15:49:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287381207] [2022-04-18 15:49:47,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287381207] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097720212] [2022-04-18 15:49:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,737 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,739 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2022-04-18 15:49:47,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 15:49:47,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2022-04-18 15:49:47,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,760 INFO L129 PetriNetUnfolder]: 0/179 cut-off events. [2022-04-18 15:49:47,760 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-04-18 15:49:47,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 179 events. 0/179 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2022-04-18 15:49:47,761 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 7 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2022-04-18 15:49:47,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 160 transitions, 353 flow [2022-04-18 15:49:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2022-04-18 15:49:47,762 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8895131086142322 [2022-04-18 15:49:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2022-04-18 15:49:47,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 15:49:47,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 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 15:49:47,765 INFO L186 Difference]: Start difference. First operand has 168 places, 162 transitions, 341 flow. Second operand 3 states and 475 transitions. [2022-04-18 15:49:47,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 160 transitions, 353 flow [2022-04-18 15:49:47,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:47,768 INFO L242 Difference]: Finished difference. Result has 166 places, 160 transitions, 335 flow [2022-04-18 15:49:47,768 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2022-04-18 15:49:47,769 INFO L335 CegarLoopForPetriNet]: 169 programPoint places, -3 predicate places. [2022-04-18 15:49:47,769 INFO L478 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 335 flow [2022-04-18 15:49:47,770 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 15:49:47,770 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,770 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] [2022-04-18 15:49:47,770 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:49:47,770 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2022-04-18 15:49:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 961455302, now seen corresponding path program 1 times [2022-04-18 15:49:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408192888] [2022-04-18 15:49:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:47,788 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:47,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:47,815 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:47,816 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-04-18 15:49:47,817 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-04-18 15:49:47,818 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-04-18 15:49:47,818 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-04-18 15:49:47,818 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-04-18 15:49:47,818 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-04-18 15:49:47,818 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-04-18 15:49:47,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-04-18 15:49:47,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-04-18 15:49:47,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-04-18 15:49:47,819 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-04-18 15:49:47,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-04-18 15:49:47,820 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-04-18 15:49:47,821 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-04-18 15:49:47,824 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-04-18 15:49:47,824 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-04-18 15:49:47,824 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-04-18 15:49:47,824 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-04-18 15:49:47,824 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-04-18 15:49:47,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:49:47,827 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:49:47,828 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:47,828 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:47,869 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:49:47,871 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:47,873 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 15:49:47,873 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 15:49:47,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 232 places, 246 transitions, 510 flow [2022-04-18 15:49:47,933 INFO L129 PetriNetUnfolder]: 31/381 cut-off events. [2022-04-18 15:49:47,933 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:49:47,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 381 events. 31/381 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1478 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-04-18 15:49:47,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 246 transitions, 510 flow [2022-04-18 15:49:47,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 246 transitions, 510 flow [2022-04-18 15:49:47,946 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2022-04-18 15:49:47,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:47,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,946 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] [2022-04-18 15:49:47,946 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -949591519, now seen corresponding path program 1 times [2022-04-18 15:49:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597644511] [2022-04-18 15:49:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,994 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 15:49:47,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597644511] [2022-04-18 15:49:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597644511] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720764276] [2022-04-18 15:49:47,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,997 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:48,000 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 246 [2022-04-18 15:49:48,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 246 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 15:49:48,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 246 [2022-04-18 15:49:48,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,079 INFO L129 PetriNetUnfolder]: 3/349 cut-off events. [2022-04-18 15:49:48,079 INFO L130 PetriNetUnfolder]: For 28/66 co-relation queries the response was YES. [2022-04-18 15:49:48,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 349 events. 3/349 cut-off events. For 28/66 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 973 event pairs, 0 based on Foata normal form. 60/374 useless extension candidates. Maximal degree in co-relation 229. Up to 22 conditions per place. [2022-04-18 15:49:48,082 INFO L132 encePairwiseOnDemand]: 226/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/227 dead transitions. [2022-04-18 15:49:48,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 227 transitions, 502 flow [2022-04-18 15:49:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2022-04-18 15:49:48,083 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-04-18 15:49:48,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2022-04-18 15:49:48,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2022-04-18 15:49:48,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2022-04-18 15:49:48,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 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 15:49:48,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,088 INFO L186 Difference]: Start difference. First operand has 232 places, 246 transitions, 510 flow. Second operand 3 states and 669 transitions. [2022-04-18 15:49:48,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 227 transitions, 502 flow [2022-04-18 15:49:48,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 227 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:48,091 INFO L242 Difference]: Finished difference. Result has 232 places, 227 transitions, 476 flow [2022-04-18 15:49:48,092 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=232, PETRI_TRANSITIONS=227} [2022-04-18 15:49:48,093 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, 0 predicate places. [2022-04-18 15:49:48,094 INFO L478 AbstractCegarLoop]: Abstraction has has 232 places, 227 transitions, 476 flow [2022-04-18 15:49:48,096 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 15:49:48,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,096 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] [2022-04-18 15:49:48,096 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:49:48,096 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2024362224, now seen corresponding path program 1 times [2022-04-18 15:49:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044720845] [2022-04-18 15:49:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:48,130 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 15:49:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:48,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044720845] [2022-04-18 15:49:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044720845] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:48,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554321074] [2022-04-18 15:49:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:48,132 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:48,133 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 246 [2022-04-18 15:49:48,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 227 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 15:49:48,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 246 [2022-04-18 15:49:48,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,184 INFO L129 PetriNetUnfolder]: 3/345 cut-off events. [2022-04-18 15:49:48,185 INFO L130 PetriNetUnfolder]: For 26/54 co-relation queries the response was YES. [2022-04-18 15:49:48,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 345 events. 3/345 cut-off events. For 26/54 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 951 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 333. Up to 14 conditions per place. [2022-04-18 15:49:48,187 INFO L132 encePairwiseOnDemand]: 243/246 looper letters, 9 selfloop transitions, 1 changer transitions 0/225 dead transitions. [2022-04-18 15:49:48,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 225 transitions, 492 flow [2022-04-18 15:49:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2022-04-18 15:49:48,190 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8902439024390244 [2022-04-18 15:49:48,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2022-04-18 15:49:48,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2022-04-18 15:49:48,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2022-04-18 15:49:48,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 15:49:48,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,193 INFO L186 Difference]: Start difference. First operand has 232 places, 227 transitions, 476 flow. Second operand 3 states and 657 transitions. [2022-04-18 15:49:48,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 225 transitions, 492 flow [2022-04-18 15:49:48,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 225 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:48,197 INFO L242 Difference]: Finished difference. Result has 230 places, 225 transitions, 470 flow [2022-04-18 15:49:48,198 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=230, PETRI_TRANSITIONS=225} [2022-04-18 15:49:48,199 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-04-18 15:49:48,199 INFO L478 AbstractCegarLoop]: Abstraction has has 230 places, 225 transitions, 470 flow [2022-04-18 15:49:48,199 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 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 15:49:48,199 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,200 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:48,200 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:49:48,200 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1871693790, now seen corresponding path program 1 times [2022-04-18 15:49:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625679422] [2022-04-18 15:49:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:48,224 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 15:49:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625679422] [2022-04-18 15:49:48,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625679422] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:48,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:48,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014597932] [2022-04-18 15:49:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:48,226 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:48,228 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 246 [2022-04-18 15:49:48,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 225 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 15:49:48,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 246 [2022-04-18 15:49:48,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,398 INFO L129 PetriNetUnfolder]: 58/1081 cut-off events. [2022-04-18 15:49:48,398 INFO L130 PetriNetUnfolder]: For 102/116 co-relation queries the response was YES. [2022-04-18 15:49:48,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 1081 events. 58/1081 cut-off events. For 102/116 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6084 event pairs, 54 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 1218. Up to 131 conditions per place. [2022-04-18 15:49:48,406 INFO L132 encePairwiseOnDemand]: 243/246 looper letters, 19 selfloop transitions, 2 changer transitions 0/224 dead transitions. [2022-04-18 15:49:48,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 224 transitions, 510 flow [2022-04-18 15:49:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2022-04-18 15:49:48,408 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8672086720867209 [2022-04-18 15:49:48,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2022-04-18 15:49:48,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2022-04-18 15:49:48,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2022-04-18 15:49:48,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 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 15:49:48,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,413 INFO L186 Difference]: Start difference. First operand has 230 places, 225 transitions, 470 flow. Second operand 3 states and 640 transitions. [2022-04-18 15:49:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 224 transitions, 510 flow [2022-04-18 15:49:48,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 224 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:48,416 INFO L242 Difference]: Finished difference. Result has 230 places, 224 transitions, 471 flow [2022-04-18 15:49:48,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=230, PETRI_TRANSITIONS=224} [2022-04-18 15:49:48,419 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, -2 predicate places. [2022-04-18 15:49:48,419 INFO L478 AbstractCegarLoop]: Abstraction has has 230 places, 224 transitions, 471 flow [2022-04-18 15:49:48,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 15:49:48,419 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,419 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] [2022-04-18 15:49:48,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:49:48,420 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash 335253986, now seen corresponding path program 1 times [2022-04-18 15:49:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996528716] [2022-04-18 15:49:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:48,452 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 15:49:48,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:48,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996528716] [2022-04-18 15:49:48,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996528716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:48,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:48,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064226258] [2022-04-18 15:49:48,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:48,453 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:48,455 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 246 [2022-04-18 15:49:48,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 224 transitions, 471 flow. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 15:49:48,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 246 [2022-04-18 15:49:48,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,497 INFO L129 PetriNetUnfolder]: 2/318 cut-off events. [2022-04-18 15:49:48,498 INFO L130 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-04-18 15:49:48,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 318 events. 2/318 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 774 event pairs, 0 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 314. Up to 16 conditions per place. [2022-04-18 15:49:48,500 INFO L132 encePairwiseOnDemand]: 243/246 looper letters, 13 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-04-18 15:49:48,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 228 transitions, 509 flow [2022-04-18 15:49:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 667 transitions. [2022-04-18 15:49:48,502 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9037940379403794 [2022-04-18 15:49:48,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 667 transitions. [2022-04-18 15:49:48,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 667 transitions. [2022-04-18 15:49:48,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 667 transitions. [2022-04-18 15:49:48,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 15:49:48,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,505 INFO L186 Difference]: Start difference. First operand has 230 places, 224 transitions, 471 flow. Second operand 3 states and 667 transitions. [2022-04-18 15:49:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 228 transitions, 509 flow [2022-04-18 15:49:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 228 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:48,508 INFO L242 Difference]: Finished difference. Result has 231 places, 225 transitions, 479 flow [2022-04-18 15:49:48,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=479, PETRI_PLACES=231, PETRI_TRANSITIONS=225} [2022-04-18 15:49:48,509 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, -1 predicate places. [2022-04-18 15:49:48,509 INFO L478 AbstractCegarLoop]: Abstraction has has 231 places, 225 transitions, 479 flow [2022-04-18 15:49:48,510 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 15:49:48,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,510 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] [2022-04-18 15:49:48,510 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:49:48,510 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash 512543319, now seen corresponding path program 1 times [2022-04-18 15:49:48,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562444799] [2022-04-18 15:49:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:48,530 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 15:49:48,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562444799] [2022-04-18 15:49:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562444799] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885679367] [2022-04-18 15:49:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:48,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:48,533 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 246 [2022-04-18 15:49:48,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 225 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 246 [2022-04-18 15:49:48,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,657 INFO L129 PetriNetUnfolder]: 30/916 cut-off events. [2022-04-18 15:49:48,658 INFO L130 PetriNetUnfolder]: For 78/88 co-relation queries the response was YES. [2022-04-18 15:49:48,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 916 events. 30/916 cut-off events. For 78/88 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4766 event pairs, 22 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 995. Up to 69 conditions per place. [2022-04-18 15:49:48,665 INFO L132 encePairwiseOnDemand]: 240/246 looper letters, 15 selfloop transitions, 2 changer transitions 0/224 dead transitions. [2022-04-18 15:49:48,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 224 transitions, 516 flow [2022-04-18 15:49:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2022-04-18 15:49:48,667 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2022-04-18 15:49:48,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2022-04-18 15:49:48,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2022-04-18 15:49:48,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2022-04-18 15:49:48,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 15:49:48,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 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 15:49:48,671 INFO L186 Difference]: Start difference. First operand has 231 places, 225 transitions, 479 flow. Second operand 3 states and 648 transitions. [2022-04-18 15:49:48,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 224 transitions, 516 flow [2022-04-18 15:49:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 224 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:48,674 INFO L242 Difference]: Finished difference. Result has 229 places, 223 transitions, 483 flow [2022-04-18 15:49:48,675 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2022-04-18 15:49:48,675 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, -3 predicate places. [2022-04-18 15:49:48,675 INFO L478 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 483 flow [2022-04-18 15:49:48,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,676 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:48,676 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:49:48,676 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2078860065, now seen corresponding path program 1 times [2022-04-18 15:49:48,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137148485] [2022-04-18 15:49:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:48,750 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 15:49:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137148485] [2022-04-18 15:49:48,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137148485] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:48,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:48,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:49:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681067192] [2022-04-18 15:49:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:48,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:49:48,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:49:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:49:48,754 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 246 [2022-04-18 15:49:48,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 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 15:49:48,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:48,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 246 [2022-04-18 15:49:48,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:56,236 INFO L129 PetriNetUnfolder]: 40125/79221 cut-off events. [2022-04-18 15:49:56,237 INFO L130 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-04-18 15:49:56,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141946 conditions, 79221 events. 40125/79221 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 1674. Compared 798945 event pairs, 11389 based on Foata normal form. 0/69269 useless extension candidates. Maximal degree in co-relation 141902. Up to 23722 conditions per place. [2022-04-18 15:49:56,789 INFO L132 encePairwiseOnDemand]: 202/246 looper letters, 270 selfloop transitions, 84 changer transitions 0/503 dead transitions. [2022-04-18 15:49:56,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 503 transitions, 1795 flow [2022-04-18 15:49:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:49:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:49:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1282 transitions. [2022-04-18 15:49:56,792 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8685636856368564 [2022-04-18 15:49:56,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1282 transitions. [2022-04-18 15:49:56,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1282 transitions. [2022-04-18 15:49:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:56,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1282 transitions. [2022-04-18 15:49:56,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 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 15:49:56,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 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 15:49:56,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 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 15:49:56,797 INFO L186 Difference]: Start difference. First operand has 229 places, 223 transitions, 483 flow. Second operand 6 states and 1282 transitions. [2022-04-18 15:49:56,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 503 transitions, 1795 flow [2022-04-18 15:49:56,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 503 transitions, 1795 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:56,809 INFO L242 Difference]: Finished difference. Result has 239 places, 315 transitions, 1115 flow [2022-04-18 15:49:56,810 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1115, PETRI_PLACES=239, PETRI_TRANSITIONS=315} [2022-04-18 15:49:56,810 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, 7 predicate places. [2022-04-18 15:49:56,811 INFO L478 AbstractCegarLoop]: Abstraction has has 239 places, 315 transitions, 1115 flow [2022-04-18 15:49:56,811 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.5) internal successors, (933), 6 states have internal predecessors, (933), 0 states have call successors, (0), 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 15:49:56,811 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:56,811 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:56,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:49:56,812 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1603064128, now seen corresponding path program 1 times [2022-04-18 15:49:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:56,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72523807] [2022-04-18 15:49:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72523807] [2022-04-18 15:49:56,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72523807] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:49:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726084232] [2022-04-18 15:49:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:56,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:49:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:56,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:49:56,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:49:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:56,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:49:56,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:49:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:57,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:49:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:57,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726084232] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:49:57,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:49:57,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:49:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764882318] [2022-04-18 15:49:57,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:49:57,173 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:49:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:49:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:49:57,175 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 246 [2022-04-18 15:49:57,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 315 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 0 states have call successors, (0), 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 15:49:57,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:57,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 246 [2022-04-18 15:49:57,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:57,507 INFO L129 PetriNetUnfolder]: 536/2861 cut-off events. [2022-04-18 15:49:57,507 INFO L130 PetriNetUnfolder]: For 452/531 co-relation queries the response was YES. [2022-04-18 15:49:57,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5148 conditions, 2861 events. 536/2861 cut-off events. For 452/531 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 22797 event pairs, 126 based on Foata normal form. 14/2809 useless extension candidates. Maximal degree in co-relation 5099. Up to 488 conditions per place. [2022-04-18 15:49:57,527 INFO L132 encePairwiseOnDemand]: 241/246 looper letters, 9 selfloop transitions, 7 changer transitions 0/274 dead transitions. [2022-04-18 15:49:57,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 274 transitions, 1057 flow [2022-04-18 15:49:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:49:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:49:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1962 transitions. [2022-04-18 15:49:57,531 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2022-04-18 15:49:57,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1962 transitions. [2022-04-18 15:49:57,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1962 transitions. [2022-04-18 15:49:57,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:57,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1962 transitions. [2022-04-18 15:49:57,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 0 states have call successors, (0), 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 15:49:57,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 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 15:49:57,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 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 15:49:57,539 INFO L186 Difference]: Start difference. First operand has 239 places, 315 transitions, 1115 flow. Second operand 9 states and 1962 transitions. [2022-04-18 15:49:57,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 274 transitions, 1057 flow [2022-04-18 15:49:57,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 274 transitions, 1055 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:57,545 INFO L242 Difference]: Finished difference. Result has 202 places, 270 transitions, 1029 flow [2022-04-18 15:49:57,545 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=202, PETRI_TRANSITIONS=270} [2022-04-18 15:49:57,545 INFO L335 CegarLoopForPetriNet]: 232 programPoint places, -30 predicate places. [2022-04-18 15:49:57,546 INFO L478 AbstractCegarLoop]: Abstraction has has 202 places, 270 transitions, 1029 flow [2022-04-18 15:49:57,546 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 218.3) internal successors, (2183), 10 states have internal predecessors, (2183), 0 states have call successors, (0), 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 15:49:57,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:57,547 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 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] [2022-04-18 15:49:57,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:49:57,772 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-18 15:49:57,772 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-04-18 15:49:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1557342231, now seen corresponding path program 1 times [2022-04-18 15:49:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:57,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886505080] [2022-04-18 15:49:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:57,784 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:57,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:57,797 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:57,797 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-04-18 15:49:57,797 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 15:49:57,797 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 15:49:57,797 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 15:49:57,797 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 15:49:57,798 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 15:49:57,799 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 15:49:57,800 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 15:49:57,800 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 15:49:57,800 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 15:49:57,800 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 15:49:57,800 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 15:49:57,800 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:49:57,801 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:57,801 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:57,801 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:49:57,819 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:49:57,820 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:57,821 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 15:49:57,821 INFO L341 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-04-18 15:49:57,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 295 places, 314 transitions, 658 flow [2022-04-18 15:49:57,864 INFO L129 PetriNetUnfolder]: 50/577 cut-off events. [2022-04-18 15:49:57,865 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:49:57,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 577 events. 50/577 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2547 event pairs, 1 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 389. Up to 16 conditions per place. [2022-04-18 15:49:57,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 314 transitions, 658 flow [2022-04-18 15:49:57,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 314 transitions, 658 flow [2022-04-18 15:49:57,876 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2022-04-18 15:49:57,876 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:57,876 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:57,876 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] [2022-04-18 15:49:57,876 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 15:49:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash -6967269, now seen corresponding path program 1 times [2022-04-18 15:49:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:57,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141388997] [2022-04-18 15:49:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:57,890 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 15:49:57,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:57,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141388997] [2022-04-18 15:49:57,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141388997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:57,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:57,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824753630] [2022-04-18 15:49:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:57,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:57,893 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 314 [2022-04-18 15:49:57,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 314 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 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 15:49:57,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:57,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 314 [2022-04-18 15:49:57,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:57,953 INFO L129 PetriNetUnfolder]: 8/530 cut-off events. [2022-04-18 15:49:57,954 INFO L130 PetriNetUnfolder]: For 71/168 co-relation queries the response was YES. [2022-04-18 15:49:57,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 530 events. 8/530 cut-off events. For 71/168 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1952 event pairs, 1 based on Foata normal form. 144/620 useless extension candidates. Maximal degree in co-relation 380. Up to 34 conditions per place. [2022-04-18 15:49:57,958 INFO L132 encePairwiseOnDemand]: 288/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/289 dead transitions. [2022-04-18 15:49:57,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 289 transitions, 642 flow [2022-04-18 15:49:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2022-04-18 15:49:57,960 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9097664543524416 [2022-04-18 15:49:57,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2022-04-18 15:49:57,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2022-04-18 15:49:57,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:57,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2022-04-18 15:49:57,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 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 15:49:57,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:57,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:57,964 INFO L186 Difference]: Start difference. First operand has 295 places, 314 transitions, 658 flow. Second operand 3 states and 857 transitions. [2022-04-18 15:49:57,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 289 transitions, 642 flow [2022-04-18 15:49:57,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 289 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:57,967 INFO L242 Difference]: Finished difference. Result has 295 places, 289 transitions, 612 flow [2022-04-18 15:49:57,968 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=295, PETRI_TRANSITIONS=289} [2022-04-18 15:49:57,968 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, 0 predicate places. [2022-04-18 15:49:57,968 INFO L478 AbstractCegarLoop]: Abstraction has has 295 places, 289 transitions, 612 flow [2022-04-18 15:49:57,969 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 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 15:49:57,969 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:57,969 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] [2022-04-18 15:49:57,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:49:57,969 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 15:49:57,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1894419914, now seen corresponding path program 1 times [2022-04-18 15:49:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:57,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387010240] [2022-04-18 15:49:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:57,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:57,983 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 15:49:57,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:57,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387010240] [2022-04-18 15:49:57,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387010240] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:57,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:57,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51427797] [2022-04-18 15:49:57,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:57,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:57,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:57,986 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 314 [2022-04-18 15:49:57,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 289 transitions, 612 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 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 15:49:57,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:57,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 314 [2022-04-18 15:49:57,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:58,038 INFO L129 PetriNetUnfolder]: 8/525 cut-off events. [2022-04-18 15:49:58,039 INFO L130 PetriNetUnfolder]: For 66/138 co-relation queries the response was YES. [2022-04-18 15:49:58,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 525 events. 8/525 cut-off events. For 66/138 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1919 event pairs, 1 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 537. Up to 25 conditions per place. [2022-04-18 15:49:58,043 INFO L132 encePairwiseOnDemand]: 311/314 looper letters, 11 selfloop transitions, 1 changer transitions 0/287 dead transitions. [2022-04-18 15:49:58,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 632 flow [2022-04-18 15:49:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2022-04-18 15:49:58,045 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8906581740976646 [2022-04-18 15:49:58,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2022-04-18 15:49:58,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2022-04-18 15:49:58,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:58,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2022-04-18 15:49:58,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 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 15:49:58,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:58,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:58,048 INFO L186 Difference]: Start difference. First operand has 295 places, 289 transitions, 612 flow. Second operand 3 states and 839 transitions. [2022-04-18 15:49:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 632 flow [2022-04-18 15:49:58,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:58,052 INFO L242 Difference]: Finished difference. Result has 293 places, 287 transitions, 606 flow [2022-04-18 15:49:58,053 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=287} [2022-04-18 15:49:58,053 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-04-18 15:49:58,053 INFO L478 AbstractCegarLoop]: Abstraction has has 293 places, 287 transitions, 606 flow [2022-04-18 15:49:58,054 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 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 15:49:58,054 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:58,054 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:58,054 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 15:49:58,054 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 15:49:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1145722788, now seen corresponding path program 1 times [2022-04-18 15:49:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278077158] [2022-04-18 15:49:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:58,066 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 15:49:58,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:58,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278077158] [2022-04-18 15:49:58,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278077158] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:58,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:58,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:58,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271169116] [2022-04-18 15:49:58,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:58,067 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:58,069 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 314 [2022-04-18 15:49:58,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 287 transitions, 606 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 15:49:58,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:58,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 314 [2022-04-18 15:49:58,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:59,160 INFO L129 PetriNetUnfolder]: 941/8743 cut-off events. [2022-04-18 15:49:59,161 INFO L130 PetriNetUnfolder]: For 1234/1381 co-relation queries the response was YES. [2022-04-18 15:49:59,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10690 conditions, 8743 events. 941/8743 cut-off events. For 1234/1381 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 95095 event pairs, 907 based on Foata normal form. 0/7572 useless extension candidates. Maximal degree in co-relation 10646. Up to 1510 conditions per place. [2022-04-18 15:49:59,246 INFO L132 encePairwiseOnDemand]: 311/314 looper letters, 27 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-04-18 15:49:59,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 662 flow [2022-04-18 15:49:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-04-18 15:49:59,249 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8598726114649682 [2022-04-18 15:49:59,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-04-18 15:49:59,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-04-18 15:49:59,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:59,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-04-18 15:49:59,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 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 15:49:59,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:59,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:59,253 INFO L186 Difference]: Start difference. First operand has 293 places, 287 transitions, 606 flow. Second operand 3 states and 810 transitions. [2022-04-18 15:49:59,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 662 flow [2022-04-18 15:49:59,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:59,257 INFO L242 Difference]: Finished difference. Result has 293 places, 286 transitions, 607 flow [2022-04-18 15:49:59,257 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=607, PETRI_PLACES=293, PETRI_TRANSITIONS=286} [2022-04-18 15:49:59,258 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -2 predicate places. [2022-04-18 15:49:59,258 INFO L478 AbstractCegarLoop]: Abstraction has has 293 places, 286 transitions, 607 flow [2022-04-18 15:49:59,258 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 15:49:59,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:59,259 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] [2022-04-18 15:49:59,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-18 15:49:59,259 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:49:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 119940130, now seen corresponding path program 1 times [2022-04-18 15:49:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:59,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731434154] [2022-04-18 15:49:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:59,278 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 15:49:59,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:59,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731434154] [2022-04-18 15:49:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731434154] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:59,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:59,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667489034] [2022-04-18 15:49:59,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:59,279 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:59,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:59,281 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 314 [2022-04-18 15:49:59,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 286 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 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 15:49:59,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:59,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 314 [2022-04-18 15:49:59,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:59,352 INFO L129 PetriNetUnfolder]: 7/498 cut-off events. [2022-04-18 15:49:59,352 INFO L130 PetriNetUnfolder]: For 77/224 co-relation queries the response was YES. [2022-04-18 15:49:59,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 498 events. 7/498 cut-off events. For 77/224 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1741 event pairs, 1 based on Foata normal form. 1/454 useless extension candidates. Maximal degree in co-relation 521. Up to 30 conditions per place. [2022-04-18 15:49:59,357 INFO L132 encePairwiseOnDemand]: 311/314 looper letters, 15 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2022-04-18 15:49:59,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 290 transitions, 649 flow [2022-04-18 15:49:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2022-04-18 15:49:59,359 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9012738853503185 [2022-04-18 15:49:59,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2022-04-18 15:49:59,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2022-04-18 15:49:59,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:59,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2022-04-18 15:49:59,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 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 15:49:59,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:59,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 15:49:59,363 INFO L186 Difference]: Start difference. First operand has 293 places, 286 transitions, 607 flow. Second operand 3 states and 849 transitions. [2022-04-18 15:49:59,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 290 transitions, 649 flow [2022-04-18 15:49:59,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 290 transitions, 645 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:59,367 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 615 flow [2022-04-18 15:49:59,367 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-04-18 15:49:59,368 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -1 predicate places. [2022-04-18 15:49:59,368 INFO L478 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 615 flow [2022-04-18 15:49:59,368 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 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 15:49:59,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:59,368 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] [2022-04-18 15:49:59,368 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-18 15:49:59,369 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:49:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 183467225, now seen corresponding path program 1 times [2022-04-18 15:49:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032530052] [2022-04-18 15:49:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:59,389 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 15:49:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032530052] [2022-04-18 15:49:59,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032530052] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:59,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:59,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644343812] [2022-04-18 15:49:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:59,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:59,393 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 314 [2022-04-18 15:49:59,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 615 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 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 15:49:59,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:59,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 314 [2022-04-18 15:49:59,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:00,046 INFO L129 PetriNetUnfolder]: 381/5358 cut-off events. [2022-04-18 15:50:00,047 INFO L130 PetriNetUnfolder]: For 683/758 co-relation queries the response was YES. [2022-04-18 15:50:00,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6253 conditions, 5358 events. 381/5358 cut-off events. For 683/758 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 51660 event pairs, 310 based on Foata normal form. 0/4895 useless extension candidates. Maximal degree in co-relation 6209. Up to 623 conditions per place. [2022-04-18 15:50:00,120 INFO L132 encePairwiseOnDemand]: 305/314 looper letters, 22 selfloop transitions, 3 changer transitions 0/286 dead transitions. [2022-04-18 15:50:00,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 286 transitions, 675 flow [2022-04-18 15:50:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2022-04-18 15:50:00,122 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8704883227176221 [2022-04-18 15:50:00,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2022-04-18 15:50:00,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2022-04-18 15:50:00,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:00,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2022-04-18 15:50:00,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,126 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 615 flow. Second operand 3 states and 820 transitions. [2022-04-18 15:50:00,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 286 transitions, 675 flow [2022-04-18 15:50:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 286 transitions, 673 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:00,130 INFO L242 Difference]: Finished difference. Result has 290 places, 284 transitions, 622 flow [2022-04-18 15:50:00,130 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=290, PETRI_TRANSITIONS=284} [2022-04-18 15:50:00,131 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -5 predicate places. [2022-04-18 15:50:00,131 INFO L478 AbstractCegarLoop]: Abstraction has has 290 places, 284 transitions, 622 flow [2022-04-18 15:50:00,131 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,131 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:00,132 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:00,132 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-18 15:50:00,132 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-04-18 15:50:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 596000033, now seen corresponding path program 1 times [2022-04-18 15:50:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:00,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541599099] [2022-04-18 15:50:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:00,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541599099] [2022-04-18 15:50:00,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541599099] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:00,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:00,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:50:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586727222] [2022-04-18 15:50:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:00,188 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:00,190 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 314 [2022-04-18 15:50:00,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 284 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:00,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 314 [2022-04-18 15:50:00,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand