./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:52:39,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:52:39,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:52:39,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:52:39,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:52:39,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:52:39,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:52:39,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:52:39,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:52:39,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:52:39,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:52:39,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:52:39,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:52:39,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:52:39,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:52:39,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:52:39,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:52:39,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:52:39,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:52:39,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:52:39,800 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:52:39,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:52:39,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:52:39,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:52:39,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:52:39,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:52:39,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:52:39,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:52:39,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:52:39,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:52:39,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:52:39,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:52:39,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:52:39,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:52:39,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:52:39,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:52:39,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:52:39,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:52:39,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:52:39,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:52:39,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:52:39,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:52:39,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:52:39,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:52:39,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:52:39,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:52:39,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:52:39,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:52:39,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:52:39,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:52:39,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:52:39,842 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:52:39,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:52:39,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:52:39,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:52:39,844 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:52:39,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:52:39,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:52:39,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:52:39,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:52:39,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:52:39,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:52:39,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:52:39,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:52:39,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:52:39,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:52:39,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:52:39,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:52:39,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:52:39,847 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:52:39,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:52:39,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:52:39,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-04-18 15:52:40,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:52:40,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:52:40,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:52:40,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:52:40,082 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:52:40,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-04-18 15:52:40,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d00cc1d/1028d7ef0c7f47d3b94c0af6814e4cb6/FLAG682de1181 [2022-04-18 15:52:40,533 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:52:40,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2022-04-18 15:52:40,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d00cc1d/1028d7ef0c7f47d3b94c0af6814e4cb6/FLAG682de1181 [2022-04-18 15:52:40,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d00cc1d/1028d7ef0c7f47d3b94c0af6814e4cb6 [2022-04-18 15:52:40,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:52:40,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:52:40,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:52:40,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:52:40,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:52:40,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:40,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce1a77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40, skipping insertion in model container [2022-04-18 15:52:40,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:40,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:52:40,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:52:40,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-04-18 15:52:40,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:52:40,861 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:52:40,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-04-18 15:52:40,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:52:40,962 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:52:40,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40 WrapperNode [2022-04-18 15:52:40,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:52:40,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:52:40,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:52:40,965 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:52:40,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:40,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,015 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 103 [2022-04-18 15:52:41,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:52:41,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:52:41,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:52:41,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:52:41,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:52:41,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:52:41,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:52:41,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:52:41,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (1/1) ... [2022-04-18 15:52:41,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:52:41,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:41,111 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 15:52:41,132 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 15:52:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:52:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:52:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-04-18 15:52:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:52:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 15:52:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 15:52:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 15:52:41,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 15:52:41,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:52:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:52:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:52:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:52:41,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:52:41,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:52:41,146 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 15:52:41,262 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:52:41,263 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:52:41,523 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:52:41,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:52:41,534 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 15:52:41,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:52:41 BoogieIcfgContainer [2022-04-18 15:52:41,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:52:41,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:52:41,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:52:41,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:52:41,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:52:40" (1/3) ... [2022-04-18 15:52:41,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bed0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:52:41, skipping insertion in model container [2022-04-18 15:52:41,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:52:40" (2/3) ... [2022-04-18 15:52:41,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bed0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:52:41, skipping insertion in model container [2022-04-18 15:52:41,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:52:41" (3/3) ... [2022-04-18 15:52:41,545 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-04-18 15:52:41,549 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:52:41,549 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:52:41,549 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-04-18 15:52:41,549 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:52:41,633 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:52:41,685 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:52:41,690 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 15:52:41,691 INFO L341 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-04-18 15:52:41,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 205 transitions, 426 flow [2022-04-18 15:52:41,774 INFO L129 PetriNetUnfolder]: 10/203 cut-off events. [2022-04-18 15:52:41,774 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:52:41,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 10/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 344 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2022-04-18 15:52:41,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 205 transitions, 426 flow [2022-04-18 15:52:41,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 189 transitions, 390 flow [2022-04-18 15:52:41,799 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2022-04-18 15:52:41,800 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:52:41,800 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:41,800 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] [2022-04-18 15:52:41,801 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1639965915, now seen corresponding path program 1 times [2022-04-18 15:52:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184135948] [2022-04-18 15:52:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:42,016 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 15:52:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184135948] [2022-04-18 15:52:42,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184135948] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:42,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:42,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154910306] [2022-04-18 15:52:42,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:42,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:42,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:42,052 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 205 [2022-04-18 15:52:42,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 189 transitions, 390 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:42,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:42,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 205 [2022-04-18 15:52:42,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:42,254 INFO L129 PetriNetUnfolder]: 154/922 cut-off events. [2022-04-18 15:52:42,254 INFO L130 PetriNetUnfolder]: For 78/79 co-relation queries the response was YES. [2022-04-18 15:52:42,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 922 events. 154/922 cut-off events. For 78/79 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5402 event pairs, 99 based on Foata normal form. 36/780 useless extension candidates. Maximal degree in co-relation 1014. Up to 264 conditions per place. [2022-04-18 15:52:42,264 INFO L132 encePairwiseOnDemand]: 198/205 looper letters, 25 selfloop transitions, 2 changer transitions 0/184 dead transitions. [2022-04-18 15:52:42,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 184 transitions, 434 flow [2022-04-18 15:52:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2022-04-18 15:52:42,279 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8861788617886179 [2022-04-18 15:52:42,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2022-04-18 15:52:42,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2022-04-18 15:52:42,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:42,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2022-04-18 15:52:42,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 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 15:52:42,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,298 INFO L186 Difference]: Start difference. First operand has 188 places, 189 transitions, 390 flow. Second operand 3 states and 545 transitions. [2022-04-18 15:52:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 184 transitions, 434 flow [2022-04-18 15:52:42,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 15:52:42,307 INFO L242 Difference]: Finished difference. Result has 185 places, 184 transitions, 376 flow [2022-04-18 15:52:42,308 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=185, PETRI_TRANSITIONS=184} [2022-04-18 15:52:42,311 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -3 predicate places. [2022-04-18 15:52:42,312 INFO L478 AbstractCegarLoop]: Abstraction has has 185 places, 184 transitions, 376 flow [2022-04-18 15:52:42,312 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:42,312 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:42,313 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] [2022-04-18 15:52:42,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:52:42,313 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1321126414, now seen corresponding path program 1 times [2022-04-18 15:52:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786849647] [2022-04-18 15:52:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:42,375 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 15:52:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:42,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786849647] [2022-04-18 15:52:42,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786849647] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:42,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:42,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824868832] [2022-04-18 15:52:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:42,377 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:42,384 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 205 [2022-04-18 15:52:42,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 184 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 15:52:42,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:42,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 205 [2022-04-18 15:52:42,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:42,436 INFO L129 PetriNetUnfolder]: 19/258 cut-off events. [2022-04-18 15:52:42,436 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-04-18 15:52:42,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 258 events. 19/258 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 785 event pairs, 12 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 255. Up to 48 conditions per place. [2022-04-18 15:52:42,438 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 21 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2022-04-18 15:52:42,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 420 flow [2022-04-18 15:52:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-04-18 15:52:42,441 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8878048780487805 [2022-04-18 15:52:42,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-04-18 15:52:42,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-04-18 15:52:42,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:42,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-04-18 15:52:42,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 15:52:42,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,445 INFO L186 Difference]: Start difference. First operand has 185 places, 184 transitions, 376 flow. Second operand 3 states and 546 transitions. [2022-04-18 15:52:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 420 flow [2022-04-18 15:52:42,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:42,451 INFO L242 Difference]: Finished difference. Result has 184 places, 183 transitions, 374 flow [2022-04-18 15:52:42,452 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=184, PETRI_TRANSITIONS=183} [2022-04-18 15:52:42,452 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -4 predicate places. [2022-04-18 15:52:42,453 INFO L478 AbstractCegarLoop]: Abstraction has has 184 places, 183 transitions, 374 flow [2022-04-18 15:52:42,453 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 15:52:42,454 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:42,454 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, 1, 1, 1] [2022-04-18 15:52:42,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:52:42,454 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash 55836945, now seen corresponding path program 1 times [2022-04-18 15:52:42,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:42,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182654341] [2022-04-18 15:52:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:42,535 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 15:52:42,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182654341] [2022-04-18 15:52:42,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182654341] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:42,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:42,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589329588] [2022-04-18 15:52:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:42,537 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:42,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:42,539 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 205 [2022-04-18 15:52:42,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 183 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 15:52:42,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:42,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 205 [2022-04-18 15:52:42,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:42,652 INFO L129 PetriNetUnfolder]: 157/1012 cut-off events. [2022-04-18 15:52:42,652 INFO L130 PetriNetUnfolder]: For 24/27 co-relation queries the response was YES. [2022-04-18 15:52:42,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 1012 events. 157/1012 cut-off events. For 24/27 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6296 event pairs, 37 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 1256. Up to 185 conditions per place. [2022-04-18 15:52:42,659 INFO L132 encePairwiseOnDemand]: 191/205 looper letters, 30 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2022-04-18 15:52:42,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 199 transitions, 488 flow [2022-04-18 15:52:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-04-18 15:52:42,661 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9203252032520325 [2022-04-18 15:52:42,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-04-18 15:52:42,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-04-18 15:52:42,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:42,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-04-18 15:52:42,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:42,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,664 INFO L186 Difference]: Start difference. First operand has 184 places, 183 transitions, 374 flow. Second operand 3 states and 566 transitions. [2022-04-18 15:52:42,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 199 transitions, 488 flow [2022-04-18 15:52:42,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 199 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:42,667 INFO L242 Difference]: Finished difference. Result has 186 places, 193 transitions, 458 flow [2022-04-18 15:52:42,668 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=186, PETRI_TRANSITIONS=193} [2022-04-18 15:52:42,668 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -2 predicate places. [2022-04-18 15:52:42,669 INFO L478 AbstractCegarLoop]: Abstraction has has 186 places, 193 transitions, 458 flow [2022-04-18 15:52:42,669 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 15:52:42,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:42,669 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, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:42,669 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:52:42,670 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:42,670 INFO L85 PathProgramCache]: Analyzing trace with hash 267198114, now seen corresponding path program 1 times [2022-04-18 15:52:42,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715138393] [2022-04-18 15:52:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:42,729 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 15:52:42,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715138393] [2022-04-18 15:52:42,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715138393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:42,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:42,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:52:42,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119869747] [2022-04-18 15:52:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:42,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:42,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:42,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:42,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:42,732 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 205 [2022-04-18 15:52:42,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 193 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:42,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:42,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 205 [2022-04-18 15:52:42,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:42,862 INFO L129 PetriNetUnfolder]: 146/1184 cut-off events. [2022-04-18 15:52:42,863 INFO L130 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-04-18 15:52:42,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 1184 events. 146/1184 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7676 event pairs, 37 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 1238. Up to 194 conditions per place. [2022-04-18 15:52:42,871 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 15 selfloop transitions, 2 changer transitions 0/198 dead transitions. [2022-04-18 15:52:42,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 198 transitions, 503 flow [2022-04-18 15:52:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2022-04-18 15:52:42,873 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9414634146341463 [2022-04-18 15:52:42,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2022-04-18 15:52:42,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2022-04-18 15:52:42,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:42,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2022-04-18 15:52:42,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 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 15:52:42,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:42,877 INFO L186 Difference]: Start difference. First operand has 186 places, 193 transitions, 458 flow. Second operand 3 states and 579 transitions. [2022-04-18 15:52:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 198 transitions, 503 flow [2022-04-18 15:52:42,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 198 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:42,881 INFO L242 Difference]: Finished difference. Result has 187 places, 194 transitions, 450 flow [2022-04-18 15:52:42,882 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=187, PETRI_TRANSITIONS=194} [2022-04-18 15:52:42,882 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -1 predicate places. [2022-04-18 15:52:42,883 INFO L478 AbstractCegarLoop]: Abstraction has has 187 places, 194 transitions, 450 flow [2022-04-18 15:52:42,883 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:42,883 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:42,883 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:42,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:52:42,884 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash 978735364, now seen corresponding path program 1 times [2022-04-18 15:52:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570889021] [2022-04-18 15:52:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:42,985 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 15:52:42,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:42,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570889021] [2022-04-18 15:52:42,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570889021] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:42,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:42,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:52:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215436346] [2022-04-18 15:52:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:42,988 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:52:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:52:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:52:42,990 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 205 [2022-04-18 15:52:42,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 194 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 178.83333333333334) internal successors, (1073), 6 states have internal predecessors, (1073), 0 states have call successors, (0), 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 15:52:42,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:42,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 205 [2022-04-18 15:52:42,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:43,125 INFO L129 PetriNetUnfolder]: 114/1058 cut-off events. [2022-04-18 15:52:43,126 INFO L130 PetriNetUnfolder]: For 12/85 co-relation queries the response was YES. [2022-04-18 15:52:43,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 1058 events. 114/1058 cut-off events. For 12/85 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6438 event pairs, 32 based on Foata normal form. 44/969 useless extension candidates. Maximal degree in co-relation 1116. Up to 179 conditions per place. [2022-04-18 15:52:43,133 INFO L132 encePairwiseOnDemand]: 200/205 looper letters, 15 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-04-18 15:52:43,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 193 transitions, 486 flow [2022-04-18 15:52:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:52:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:52:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1082 transitions. [2022-04-18 15:52:43,136 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8796747967479674 [2022-04-18 15:52:43,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1082 transitions. [2022-04-18 15:52:43,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1082 transitions. [2022-04-18 15:52:43,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:43,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1082 transitions. [2022-04-18 15:52:43,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 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 15:52:43,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 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 15:52:43,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 0 states have call successors, (0), 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 15:52:43,141 INFO L186 Difference]: Start difference. First operand has 187 places, 194 transitions, 450 flow. Second operand 6 states and 1082 transitions. [2022-04-18 15:52:43,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 193 transitions, 486 flow [2022-04-18 15:52:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 193 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:52:43,145 INFO L242 Difference]: Finished difference. Result has 190 places, 193 transitions, 454 flow [2022-04-18 15:52:43,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=190, PETRI_TRANSITIONS=193} [2022-04-18 15:52:43,148 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 2 predicate places. [2022-04-18 15:52:43,148 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 193 transitions, 454 flow [2022-04-18 15:52:43,148 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.83333333333334) internal successors, (1073), 6 states have internal predecessors, (1073), 0 states have call successors, (0), 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 15:52:43,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:43,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:43,149 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:52:43,149 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 693612851, now seen corresponding path program 1 times [2022-04-18 15:52:43,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:43,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020671405] [2022-04-18 15:52:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:43,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:43,198 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 15:52:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:43,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020671405] [2022-04-18 15:52:43,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020671405] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:43,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:43,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841646989] [2022-04-18 15:52:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:43,201 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:43,203 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 205 [2022-04-18 15:52:43,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 193 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 15:52:43,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:43,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 205 [2022-04-18 15:52:43,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:43,424 INFO L129 PetriNetUnfolder]: 357/2027 cut-off events. [2022-04-18 15:52:43,424 INFO L130 PetriNetUnfolder]: For 272/310 co-relation queries the response was YES. [2022-04-18 15:52:43,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 2027 events. 357/2027 cut-off events. For 272/310 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 15244 event pairs, 118 based on Foata normal form. 10/1768 useless extension candidates. Maximal degree in co-relation 2777. Up to 559 conditions per place. [2022-04-18 15:52:43,437 INFO L132 encePairwiseOnDemand]: 198/205 looper letters, 43 selfloop transitions, 10 changer transitions 0/210 dead transitions. [2022-04-18 15:52:43,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 210 transitions, 619 flow [2022-04-18 15:52:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2022-04-18 15:52:43,439 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9024390243902439 [2022-04-18 15:52:43,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2022-04-18 15:52:43,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2022-04-18 15:52:43,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:43,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2022-04-18 15:52:43,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 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 15:52:43,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,443 INFO L186 Difference]: Start difference. First operand has 190 places, 193 transitions, 454 flow. Second operand 3 states and 555 transitions. [2022-04-18 15:52:43,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 210 transitions, 619 flow [2022-04-18 15:52:43,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 210 transitions, 612 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 15:52:43,446 INFO L242 Difference]: Finished difference. Result has 190 places, 201 transitions, 533 flow [2022-04-18 15:52:43,447 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=190, PETRI_TRANSITIONS=201} [2022-04-18 15:52:43,449 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 2 predicate places. [2022-04-18 15:52:43,449 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 201 transitions, 533 flow [2022-04-18 15:52:43,449 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 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 15:52:43,450 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:43,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:43,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:52:43,450 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -559250248, now seen corresponding path program 1 times [2022-04-18 15:52:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:43,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533834170] [2022-04-18 15:52:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:43,503 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 15:52:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:43,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533834170] [2022-04-18 15:52:43,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533834170] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:43,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:43,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:52:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263166963] [2022-04-18 15:52:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:43,509 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:43,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:43,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:43,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:43,511 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 205 [2022-04-18 15:52:43,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 201 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:52:43,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:43,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 205 [2022-04-18 15:52:43,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:43,584 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([464] L880-4-->L880-1: Formula: (= |v_#race~num~0_1| 0) InVars {} OutVars{#race~num~0=|v_#race~num~0_1|} AuxVars[] AssignedVars[#race~num~0][101], [136#L894-2true, 231#true, 221#(= thread2Thread1of1ForFork1_~j~0 0), Black: 213#true, 71#L914-4true, Black: 233#(= |#race~num~0| |thread1Thread1of1ForFork0_#t~nondet7|), 239#(= ~num~0 0), 158#L880-1true]) [2022-04-18 15:52:43,584 INFO L384 tUnfolder$Statistics]: this new event has 115 ancestors and is cut-off event [2022-04-18 15:52:43,584 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-04-18 15:52:43,585 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is cut-off event [2022-04-18 15:52:43,585 INFO L387 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-04-18 15:52:43,690 INFO L129 PetriNetUnfolder]: 333/2073 cut-off events. [2022-04-18 15:52:43,690 INFO L130 PetriNetUnfolder]: For 368/393 co-relation queries the response was YES. [2022-04-18 15:52:43,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 2073 events. 333/2073 cut-off events. For 368/393 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15622 event pairs, 105 based on Foata normal form. 12/1815 useless extension candidates. Maximal degree in co-relation 2476. Up to 357 conditions per place. [2022-04-18 15:52:43,704 INFO L132 encePairwiseOnDemand]: 200/205 looper letters, 17 selfloop transitions, 3 changer transitions 0/207 dead transitions. [2022-04-18 15:52:43,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 207 transitions, 587 flow [2022-04-18 15:52:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-04-18 15:52:43,707 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9382113821138212 [2022-04-18 15:52:43,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-04-18 15:52:43,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-04-18 15:52:43,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:43,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-04-18 15:52:43,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 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 15:52:43,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,710 INFO L186 Difference]: Start difference. First operand has 190 places, 201 transitions, 533 flow. Second operand 3 states and 577 transitions. [2022-04-18 15:52:43,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 207 transitions, 587 flow [2022-04-18 15:52:43,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 207 transitions, 567 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:43,716 INFO L242 Difference]: Finished difference. Result has 192 places, 203 transitions, 537 flow [2022-04-18 15:52:43,716 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=537, PETRI_PLACES=192, PETRI_TRANSITIONS=203} [2022-04-18 15:52:43,717 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 4 predicate places. [2022-04-18 15:52:43,717 INFO L478 AbstractCegarLoop]: Abstraction has has 192 places, 203 transitions, 537 flow [2022-04-18 15:52:43,718 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 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 15:52:43,718 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:43,718 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, 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 15:52:43,718 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:52:43,718 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1839800243, now seen corresponding path program 1 times [2022-04-18 15:52:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:43,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471236770] [2022-04-18 15:52:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:43,777 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 15:52:43,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:43,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471236770] [2022-04-18 15:52:43,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471236770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:43,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:43,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:52:43,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251823735] [2022-04-18 15:52:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:43,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:43,782 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 205 [2022-04-18 15:52:43,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 203 transitions, 537 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 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 15:52:43,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:43,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 205 [2022-04-18 15:52:43,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:43,951 INFO L129 PetriNetUnfolder]: 362/2280 cut-off events. [2022-04-18 15:52:43,952 INFO L130 PetriNetUnfolder]: For 311/352 co-relation queries the response was YES. [2022-04-18 15:52:43,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 2280 events. 362/2280 cut-off events. For 311/352 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 17685 event pairs, 97 based on Foata normal form. 17/2063 useless extension candidates. Maximal degree in co-relation 3420. Up to 432 conditions per place. [2022-04-18 15:52:43,968 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 12 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2022-04-18 15:52:43,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 207 transitions, 574 flow [2022-04-18 15:52:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:43,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2022-04-18 15:52:43,970 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9463414634146341 [2022-04-18 15:52:43,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2022-04-18 15:52:43,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2022-04-18 15:52:43,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:43,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2022-04-18 15:52:43,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 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 15:52:43,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:43,972 INFO L186 Difference]: Start difference. First operand has 192 places, 203 transitions, 537 flow. Second operand 3 states and 582 transitions. [2022-04-18 15:52:43,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 207 transitions, 574 flow [2022-04-18 15:52:43,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 207 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:43,977 INFO L242 Difference]: Finished difference. Result has 193 places, 204 transitions, 543 flow [2022-04-18 15:52:43,977 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=193, PETRI_TRANSITIONS=204} [2022-04-18 15:52:43,979 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 5 predicate places. [2022-04-18 15:52:43,979 INFO L478 AbstractCegarLoop]: Abstraction has has 193 places, 204 transitions, 543 flow [2022-04-18 15:52:43,980 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 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 15:52:43,980 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:43,980 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, 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 15:52:43,980 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:52:43,980 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 271674362, now seen corresponding path program 1 times [2022-04-18 15:52:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:43,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724558465] [2022-04-18 15:52:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:44,028 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 15:52:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:44,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724558465] [2022-04-18 15:52:44,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724558465] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:44,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:44,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:52:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002912049] [2022-04-18 15:52:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:44,029 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:44,031 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 205 [2022-04-18 15:52:44,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 204 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 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 15:52:44,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:44,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 205 [2022-04-18 15:52:44,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:44,133 INFO L129 PetriNetUnfolder]: 54/739 cut-off events. [2022-04-18 15:52:44,133 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-04-18 15:52:44,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 739 events. 54/739 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3512 event pairs, 10 based on Foata normal form. 30/721 useless extension candidates. Maximal degree in co-relation 927. Up to 102 conditions per place. [2022-04-18 15:52:44,138 INFO L132 encePairwiseOnDemand]: 197/205 looper letters, 16 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-04-18 15:52:44,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 185 transitions, 495 flow [2022-04-18 15:52:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2022-04-18 15:52:44,140 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9089430894308943 [2022-04-18 15:52:44,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2022-04-18 15:52:44,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2022-04-18 15:52:44,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:44,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2022-04-18 15:52:44,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 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 15:52:44,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,143 INFO L186 Difference]: Start difference. First operand has 193 places, 204 transitions, 543 flow. Second operand 3 states and 559 transitions. [2022-04-18 15:52:44,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 185 transitions, 495 flow [2022-04-18 15:52:44,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 185 transitions, 467 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-04-18 15:52:44,147 INFO L242 Difference]: Finished difference. Result has 187 places, 183 transitions, 429 flow [2022-04-18 15:52:44,147 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=429, PETRI_PLACES=187, PETRI_TRANSITIONS=183} [2022-04-18 15:52:44,148 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -1 predicate places. [2022-04-18 15:52:44,148 INFO L478 AbstractCegarLoop]: Abstraction has has 187 places, 183 transitions, 429 flow [2022-04-18 15:52:44,149 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 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 15:52:44,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:44,149 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, 1, 1, 1, 1, 1, 1, 1, 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 15:52:44,149 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:52:44,149 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1940912349, now seen corresponding path program 1 times [2022-04-18 15:52:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:44,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744828728] [2022-04-18 15:52:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:44,181 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 15:52:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:44,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744828728] [2022-04-18 15:52:44,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744828728] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:44,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:44,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075383289] [2022-04-18 15:52:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:44,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:44,188 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 205 [2022-04-18 15:52:44,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 183 transitions, 429 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 15:52:44,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:44,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 205 [2022-04-18 15:52:44,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:44,251 INFO L129 PetriNetUnfolder]: 48/665 cut-off events. [2022-04-18 15:52:44,252 INFO L130 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-04-18 15:52:44,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 665 events. 48/665 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3168 event pairs, 12 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 841. Up to 54 conditions per place. [2022-04-18 15:52:44,255 INFO L132 encePairwiseOnDemand]: 197/205 looper letters, 13 selfloop transitions, 4 changer transitions 3/181 dead transitions. [2022-04-18 15:52:44,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 181 transitions, 462 flow [2022-04-18 15:52:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2022-04-18 15:52:44,257 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8975609756097561 [2022-04-18 15:52:44,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2022-04-18 15:52:44,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2022-04-18 15:52:44,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:44,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2022-04-18 15:52:44,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 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 15:52:44,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,261 INFO L186 Difference]: Start difference. First operand has 187 places, 183 transitions, 429 flow. Second operand 3 states and 552 transitions. [2022-04-18 15:52:44,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 181 transitions, 462 flow [2022-04-18 15:52:44,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 181 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:52:44,264 INFO L242 Difference]: Finished difference. Result has 185 places, 177 transitions, 417 flow [2022-04-18 15:52:44,264 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=185, PETRI_TRANSITIONS=177} [2022-04-18 15:52:44,265 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -3 predicate places. [2022-04-18 15:52:44,265 INFO L478 AbstractCegarLoop]: Abstraction has has 185 places, 177 transitions, 417 flow [2022-04-18 15:52:44,266 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 15:52:44,266 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:44,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:44,266 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:52:44,266 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1746515462, now seen corresponding path program 1 times [2022-04-18 15:52:44,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:44,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558841952] [2022-04-18 15:52:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:44,302 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 15:52:44,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:44,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558841952] [2022-04-18 15:52:44,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558841952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:44,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:44,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631757567] [2022-04-18 15:52:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:44,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:44,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:44,304 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-04-18 15:52:44,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 177 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 15:52:44,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:44,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-04-18 15:52:44,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:44,362 INFO L129 PetriNetUnfolder]: 50/656 cut-off events. [2022-04-18 15:52:44,362 INFO L130 PetriNetUnfolder]: For 37/38 co-relation queries the response was YES. [2022-04-18 15:52:44,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 656 events. 50/656 cut-off events. For 37/38 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3114 event pairs, 16 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 825. Up to 74 conditions per place. [2022-04-18 15:52:44,365 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 16 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2022-04-18 15:52:44,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 177 transitions, 454 flow [2022-04-18 15:52:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2022-04-18 15:52:44,367 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8845528455284553 [2022-04-18 15:52:44,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2022-04-18 15:52:44,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2022-04-18 15:52:44,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:44,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2022-04-18 15:52:44,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:44,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:44,369 INFO L186 Difference]: Start difference. First operand has 185 places, 177 transitions, 417 flow. Second operand 3 states and 544 transitions. [2022-04-18 15:52:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 177 transitions, 454 flow [2022-04-18 15:52:44,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 177 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:44,371 INFO L242 Difference]: Finished difference. Result has 181 places, 176 transitions, 411 flow [2022-04-18 15:52:44,372 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=181, PETRI_TRANSITIONS=176} [2022-04-18 15:52:44,372 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -7 predicate places. [2022-04-18 15:52:44,372 INFO L478 AbstractCegarLoop]: Abstraction has has 181 places, 176 transitions, 411 flow [2022-04-18 15:52:44,372 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 15:52:44,373 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:44,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:44,373 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:52:44,373 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -140885311, now seen corresponding path program 1 times [2022-04-18 15:52:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469051386] [2022-04-18 15:52:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:44,411 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 15:52:44,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:44,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469051386] [2022-04-18 15:52:44,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469051386] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:52:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138749824] [2022-04-18 15:52:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:44,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:44,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:44,427 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 15:52:44,451 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 15:52:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:44,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:52:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:44,773 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 15:52:44,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:52:44,898 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 15:52:44,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138749824] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:52:44,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:52:44,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:52:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350981638] [2022-04-18 15:52:44,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:52:44,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:52:44,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:52:44,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:52:44,901 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 205 [2022-04-18 15:52:44,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 176 transitions, 411 flow. Second operand has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 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 15:52:44,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:44,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 205 [2022-04-18 15:52:44,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:45,068 INFO L129 PetriNetUnfolder]: 71/959 cut-off events. [2022-04-18 15:52:45,068 INFO L130 PetriNetUnfolder]: For 4/9 co-relation queries the response was YES. [2022-04-18 15:52:45,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1299 conditions, 959 events. 71/959 cut-off events. For 4/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4718 event pairs, 12 based on Foata normal form. 8/932 useless extension candidates. Maximal degree in co-relation 1052. Up to 53 conditions per place. [2022-04-18 15:52:45,074 INFO L132 encePairwiseOnDemand]: 199/205 looper letters, 18 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2022-04-18 15:52:45,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 191 transitions, 504 flow [2022-04-18 15:52:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:52:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:52:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1721 transitions. [2022-04-18 15:52:45,077 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9327913279132791 [2022-04-18 15:52:45,077 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1721 transitions. [2022-04-18 15:52:45,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1721 transitions. [2022-04-18 15:52:45,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:45,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1721 transitions. [2022-04-18 15:52:45,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.22222222222223) internal successors, (1721), 9 states have internal predecessors, (1721), 0 states have call successors, (0), 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 15:52:45,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 15:52:45,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 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 15:52:45,083 INFO L186 Difference]: Start difference. First operand has 181 places, 176 transitions, 411 flow. Second operand 9 states and 1721 transitions. [2022-04-18 15:52:45,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 191 transitions, 504 flow [2022-04-18 15:52:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:45,086 INFO L242 Difference]: Finished difference. Result has 190 places, 182 transitions, 457 flow [2022-04-18 15:52:45,087 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-04-18 15:52:45,087 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 2 predicate places. [2022-04-18 15:52:45,087 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 457 flow [2022-04-18 15:52:45,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 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 15:52:45,088 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:45,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:45,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 15:52:45,304 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,SelfDestructingSolverStorable11 [2022-04-18 15:52:45,305 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1424089686, now seen corresponding path program 1 times [2022-04-18 15:52:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:45,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013937192] [2022-04-18 15:52:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:45,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:45,329 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 15:52:45,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:45,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013937192] [2022-04-18 15:52:45,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013937192] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:45,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:52:45,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:52:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435473886] [2022-04-18 15:52:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:45,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:45,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:52:45,331 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 205 [2022-04-18 15:52:45,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 15:52:45,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:45,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 205 [2022-04-18 15:52:45,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:45,422 INFO L129 PetriNetUnfolder]: 97/1058 cut-off events. [2022-04-18 15:52:45,423 INFO L130 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-04-18 15:52:45,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 1058 events. 97/1058 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5768 event pairs, 42 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 1299. Up to 257 conditions per place. [2022-04-18 15:52:45,429 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 21 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-04-18 15:52:45,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 182 transitions, 504 flow [2022-04-18 15:52:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2022-04-18 15:52:45,430 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8747967479674796 [2022-04-18 15:52:45,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2022-04-18 15:52:45,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2022-04-18 15:52:45,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:45,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2022-04-18 15:52:45,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 15:52:45,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:45,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:45,433 INFO L186 Difference]: Start difference. First operand has 190 places, 182 transitions, 457 flow. Second operand 3 states and 538 transitions. [2022-04-18 15:52:45,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 182 transitions, 504 flow [2022-04-18 15:52:45,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 182 transitions, 498 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-04-18 15:52:45,436 INFO L242 Difference]: Finished difference. Result has 190 places, 181 transitions, 453 flow [2022-04-18 15:52:45,436 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=190, PETRI_TRANSITIONS=181} [2022-04-18 15:52:45,436 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 2 predicate places. [2022-04-18 15:52:45,436 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 181 transitions, 453 flow [2022-04-18 15:52:45,437 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 15:52:45,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:45,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:45,437 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:52:45,437 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1970423152, now seen corresponding path program 1 times [2022-04-18 15:52:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:45,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013190596] [2022-04-18 15:52:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:45,479 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 15:52:45,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:45,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013190596] [2022-04-18 15:52:45,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013190596] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:52:45,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969897800] [2022-04-18 15:52:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:45,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:45,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:52:45,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:52:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:52:45,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:52:45,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:52:45,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969897800] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:45,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:52:45,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:52:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062057603] [2022-04-18 15:52:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:45,719 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:52:45,720 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-04-18 15:52:45,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 181 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 15:52:45,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:45,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-04-18 15:52:45,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:45,802 INFO L129 PetriNetUnfolder]: 69/938 cut-off events. [2022-04-18 15:52:45,802 INFO L130 PetriNetUnfolder]: For 40/41 co-relation queries the response was YES. [2022-04-18 15:52:45,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 938 events. 69/938 cut-off events. For 40/41 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4768 event pairs, 20 based on Foata normal form. 0/918 useless extension candidates. Maximal degree in co-relation 1239. Up to 93 conditions per place. [2022-04-18 15:52:45,808 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 15 selfloop transitions, 2 changer transitions 0/181 dead transitions. [2022-04-18 15:52:45,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 181 transitions, 488 flow [2022-04-18 15:52:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2022-04-18 15:52:45,809 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8829268292682927 [2022-04-18 15:52:45,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2022-04-18 15:52:45,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2022-04-18 15:52:45,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:45,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2022-04-18 15:52:45,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 15:52:45,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:45,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:45,812 INFO L186 Difference]: Start difference. First operand has 190 places, 181 transitions, 453 flow. Second operand 3 states and 543 transitions. [2022-04-18 15:52:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 181 transitions, 488 flow [2022-04-18 15:52:45,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 181 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:45,815 INFO L242 Difference]: Finished difference. Result has 189 places, 180 transitions, 451 flow [2022-04-18 15:52:45,815 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-04-18 15:52:45,816 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 1 predicate places. [2022-04-18 15:52:45,816 INFO L478 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 451 flow [2022-04-18 15:52:45,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 15:52:45,816 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:45,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:45,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 15:52:46,031 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-18 15:52:46,031 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1396871358, now seen corresponding path program 1 times [2022-04-18 15:52:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281647863] [2022-04-18 15:52:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:46,080 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 15:52:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281647863] [2022-04-18 15:52:46,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281647863] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:52:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509316139] [2022-04-18 15:52:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:46,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:52:46,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:52:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:46,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:52:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:52:46,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:52:46,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509316139] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:46,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:52:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:52:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136239249] [2022-04-18 15:52:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:46,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:52:46,323 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 205 [2022-04-18 15:52:46,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:46,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:46,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 205 [2022-04-18 15:52:46,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:46,392 INFO L129 PetriNetUnfolder]: 57/869 cut-off events. [2022-04-18 15:52:46,392 INFO L130 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-04-18 15:52:46,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 869 events. 57/869 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4086 event pairs, 10 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 1075. Up to 48 conditions per place. [2022-04-18 15:52:46,402 INFO L132 encePairwiseOnDemand]: 202/205 looper letters, 9 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-04-18 15:52:46,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 180 transitions, 474 flow [2022-04-18 15:52:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-04-18 15:52:46,403 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9317073170731708 [2022-04-18 15:52:46,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2022-04-18 15:52:46,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2022-04-18 15:52:46,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:46,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2022-04-18 15:52:46,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 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 15:52:46,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:46,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:46,406 INFO L186 Difference]: Start difference. First operand has 189 places, 180 transitions, 451 flow. Second operand 3 states and 573 transitions. [2022-04-18 15:52:46,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 180 transitions, 474 flow [2022-04-18 15:52:46,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 180 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:46,409 INFO L242 Difference]: Finished difference. Result has 188 places, 179 transitions, 449 flow [2022-04-18 15:52:46,409 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2022-04-18 15:52:46,409 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 0 predicate places. [2022-04-18 15:52:46,409 INFO L478 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 449 flow [2022-04-18 15:52:46,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:46,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:46,410 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:46,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 15:52:46,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:46,628 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:46,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -94616519, now seen corresponding path program 2 times [2022-04-18 15:52:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:46,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415555609] [2022-04-18 15:52:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-04-18 15:52:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415555609] [2022-04-18 15:52:46,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415555609] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:52:46,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589510916] [2022-04-18 15:52:46,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:52:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:46,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:52:46,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:52:46,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:52:46,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:52:46,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-18 15:52:46,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:46,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:52:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:46,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:52:47,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,012 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 15:52:47,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:52:47,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:52:47,041 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 15:52:47,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:52:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-18 15:52:47,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:52:47,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589510916] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:47,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:52:47,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-04-18 15:52:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932722913] [2022-04-18 15:52:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:47,057 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 15:52:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 15:52:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:52:47,058 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 205 [2022-04-18 15:52:47,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 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 15:52:47,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:47,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 205 [2022-04-18 15:52:47,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:47,145 INFO L129 PetriNetUnfolder]: 53/848 cut-off events. [2022-04-18 15:52:47,145 INFO L130 PetriNetUnfolder]: For 14/43 co-relation queries the response was YES. [2022-04-18 15:52:47,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 848 events. 53/848 cut-off events. For 14/43 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3957 event pairs, 8 based on Foata normal form. 4/842 useless extension candidates. Maximal degree in co-relation 1092. Up to 48 conditions per place. [2022-04-18 15:52:47,150 INFO L132 encePairwiseOnDemand]: 199/205 looper letters, 13 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2022-04-18 15:52:47,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 178 transitions, 483 flow [2022-04-18 15:52:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-18 15:52:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-04-18 15:52:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1258 transitions. [2022-04-18 15:52:47,152 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8766550522648083 [2022-04-18 15:52:47,152 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1258 transitions. [2022-04-18 15:52:47,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1258 transitions. [2022-04-18 15:52:47,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:47,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1258 transitions. [2022-04-18 15:52:47,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.71428571428572) internal successors, (1258), 7 states have internal predecessors, (1258), 0 states have call successors, (0), 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 15:52:47,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 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 15:52:47,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 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 15:52:47,156 INFO L186 Difference]: Start difference. First operand has 188 places, 179 transitions, 449 flow. Second operand 7 states and 1258 transitions. [2022-04-18 15:52:47,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 178 transitions, 483 flow [2022-04-18 15:52:47,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 178 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:47,159 INFO L242 Difference]: Finished difference. Result has 191 places, 178 transitions, 453 flow [2022-04-18 15:52:47,160 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=191, PETRI_TRANSITIONS=178} [2022-04-18 15:52:47,160 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, 3 predicate places. [2022-04-18 15:52:47,160 INFO L478 AbstractCegarLoop]: Abstraction has has 191 places, 178 transitions, 453 flow [2022-04-18 15:52:47,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 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 15:52:47,160 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:47,161 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:52:47,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 15:52:47,375 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-18 15:52:47,375 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err5ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 15:52:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -417964140, now seen corresponding path program 1 times [2022-04-18 15:52:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847637961] [2022-04-18 15:52:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-18 15:52:47,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:47,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847637961] [2022-04-18 15:52:47,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847637961] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:52:47,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55351836] [2022-04-18 15:52:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:47,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:47,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:52:47,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 15:52:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:52:47,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:52:47,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-04-18 15:52:47,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:52:47,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55351836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:52:47,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:52:47,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:52:47,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53012549] [2022-04-18 15:52:47,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:52:47,774 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:52:47,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:52:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:52:47,775 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 205 [2022-04-18 15:52:47,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 178 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 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 15:52:47,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:47,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 205 [2022-04-18 15:52:47,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:47,867 INFO L129 PetriNetUnfolder]: 55/861 cut-off events. [2022-04-18 15:52:47,867 INFO L130 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-04-18 15:52:47,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1152 conditions, 861 events. 55/861 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4019 event pairs, 10 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 1058. Up to 48 conditions per place. [2022-04-18 15:52:47,870 INFO L132 encePairwiseOnDemand]: 203/205 looper letters, 0 selfloop transitions, 0 changer transitions 177/177 dead transitions. [2022-04-18 15:52:47,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 177 transitions, 465 flow [2022-04-18 15:52:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:52:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:52:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2022-04-18 15:52:47,872 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9349593495934959 [2022-04-18 15:52:47,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2022-04-18 15:52:47,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2022-04-18 15:52:47,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:47,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2022-04-18 15:52:47,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 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 15:52:47,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:47,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 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 15:52:47,875 INFO L186 Difference]: Start difference. First operand has 191 places, 178 transitions, 453 flow. Second operand 3 states and 575 transitions. [2022-04-18 15:52:47,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 177 transitions, 465 flow [2022-04-18 15:52:47,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 177 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:52:47,878 INFO L242 Difference]: Finished difference. Result has 187 places, 0 transitions, 0 flow [2022-04-18 15:52:47,878 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=187, PETRI_TRANSITIONS=0} [2022-04-18 15:52:47,879 INFO L335 CegarLoopForPetriNet]: 188 programPoint places, -1 predicate places. [2022-04-18 15:52:47,879 INFO L478 AbstractCegarLoop]: Abstraction has has 187 places, 0 transitions, 0 flow [2022-04-18 15:52:47,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 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 15:52:47,881 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (29 of 30 remaining) [2022-04-18 15:52:47,882 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2022-04-18 15:52:47,882 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2022-04-18 15:52:47,882 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2022-04-18 15:52:47,882 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2022-04-18 15:52:47,882 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2022-04-18 15:52:47,883 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 30 remaining) [2022-04-18 15:52:47,884 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2022-04-18 15:52:47,885 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2022-04-18 15:52:47,886 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2022-04-18 15:52:47,886 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2022-04-18 15:52:47,886 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2022-04-18 15:52:47,886 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2022-04-18 15:52:47,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-18 15:52:48,099 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-18 15:52:48,102 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:48,105 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 15:52:48,105 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 15:52:48,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:52:48 BasicIcfg [2022-04-18 15:52:48,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 15:52:48,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 15:52:48,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 15:52:48,108 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 15:52:48,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:52:41" (3/4) ... [2022-04-18 15:52:48,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-04-18 15:52:48,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-04-18 15:52:48,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-04-18 15:52:48,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-04-18 15:52:48,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-04-18 15:52:48,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-04-18 15:52:48,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-04-18 15:52:48,143 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-04-18 15:52:48,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 15:52:48,144 INFO L158 Benchmark]: Toolchain (without parser) took 7578.84ms. Allocated memory was 104.9MB in the beginning and 262.1MB in the end (delta: 157.3MB). Free memory was 46.0MB in the beginning and 204.3MB in the end (delta: -158.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:52:48,144 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:52:48,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.00ms. Allocated memory is still 104.9MB. Free memory was 45.8MB in the beginning and 65.1MB in the end (delta: -19.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.18ms. Allocated memory is still 104.9MB. Free memory was 65.1MB in the beginning and 62.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,144 INFO L158 Benchmark]: Boogie Preprocessor took 53.55ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,145 INFO L158 Benchmark]: RCFGBuilder took 465.74ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 42.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,145 INFO L158 Benchmark]: TraceAbstraction took 6568.84ms. Allocated memory was 104.9MB in the beginning and 262.1MB in the end (delta: 157.3MB). Free memory was 41.5MB in the beginning and 207.5MB in the end (delta: -166.0MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,145 INFO L158 Benchmark]: Witness Printer took 35.84ms. Allocated memory is still 262.1MB. Free memory was 207.5MB in the beginning and 204.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:52:48,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.00ms. Allocated memory is still 104.9MB. Free memory was 45.8MB in the beginning and 65.1MB in the end (delta: -19.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.18ms. Allocated memory is still 104.9MB. Free memory was 65.1MB in the beginning and 62.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.55ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.74ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 42.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6568.84ms. Allocated memory was 104.9MB in the beginning and 262.1MB in the end (delta: 157.3MB). Free memory was 41.5MB in the beginning and 207.5MB in the end (delta: -166.0MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. * Witness Printer took 35.84ms. Allocated memory is still 262.1MB. Free memory was 207.5MB in the beginning and 204.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 880]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 882]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 894]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 902]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 896]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 903]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 897]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 908]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 909]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 915]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 916]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 917]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 918]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 284 locations, 30 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 421 IncrementalHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 183 mSDtfsCounter, 421 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 875 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=8, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2401 NumberOfCodeBlocks, 2344 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2488 ConstructedInterpolants, 0 QuantifiedInterpolants, 3435 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1700 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 232/249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-18 15:52:48,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE