./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:50:26,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:50:26,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:50:26,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:50:26,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:50:26,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:50:26,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:50:26,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:50:26,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:50:26,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:50:26,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:50:26,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:50:26,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:50:26,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:50:26,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:50:26,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:50:26,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:50:26,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:50:26,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:50:26,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:50:26,943 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:50:26,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:50:26,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:50:26,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:50:26,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:50:26,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:50:26,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:50:26,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:50:26,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:50:26,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:50:26,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:50:26,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:50:26,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:50:26,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:50:26,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:50:26,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:50:26,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:50:26,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:50:26,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:50:26,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:50:26,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:50:26,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:50:26,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:50:27,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:50:27,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:50:27,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:50:27,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:50:27,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:50:27,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:50:27,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:50:27,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:50:27,005 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:50:27,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:50:27,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:50:27,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:50:27,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:50:27,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:50:27,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:50:27,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:50:27,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:50:27,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:50:27,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:50:27,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:50:27,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:50:27,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:27,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:50:27,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:50:27,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:50:27,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:50:27,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:50:27,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:50:27,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:50:27,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:50:27,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2022-04-18 15:50:27,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:50:27,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:50:27,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:50:27,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:50:27,282 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:50:27,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-04-18 15:50:27,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8231e50/4e4c1362edcf43b49d488382a26e2425/FLAG60d7e607a [2022-04-18 15:50:27,808 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:50:27,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2022-04-18 15:50:27,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8231e50/4e4c1362edcf43b49d488382a26e2425/FLAG60d7e607a [2022-04-18 15:50:28,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f8231e50/4e4c1362edcf43b49d488382a26e2425 [2022-04-18 15:50:28,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:50:28,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:50:28,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:28,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:50:28,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:50:28,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5046d4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28, skipping insertion in model container [2022-04-18 15:50:28,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:50:28,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:50:28,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-04-18 15:50:28,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:28,869 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:50:28,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_73-funloop_hard_racefree.i[41323,41336] [2022-04-18 15:50:28,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:28,995 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:50:28,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28 WrapperNode [2022-04-18 15:50:28,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:28,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:28,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:50:28,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:50:29,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,071 INFO L137 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-04-18 15:50:29,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:29,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:50:29,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:50:29,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:50:29,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:50:29,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:50:29,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:50:29,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:50:29,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:29,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:29,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:29,192 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 15:50:29,216 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 15:50:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:50:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:50:29,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:50:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:50:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:50:29,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:50:29,243 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 15:50:29,400 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:50:29,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:50:29,874 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:50:29,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:50:29,884 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2022-04-18 15:50:29,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:29 BoogieIcfgContainer [2022-04-18 15:50:29,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:50:29,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:50:29,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:50:29,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:50:29,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:50:28" (1/3) ... [2022-04-18 15:50:29,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ed2d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:29, skipping insertion in model container [2022-04-18 15:50:29,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (2/3) ... [2022-04-18 15:50:29,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ed2d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:29, skipping insertion in model container [2022-04-18 15:50:29,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:29" (3/3) ... [2022-04-18 15:50:29,893 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2022-04-18 15:50:29,897 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:50:29,897 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:50:29,897 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-04-18 15:50:29,897 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:50:29,967 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:50:30,005 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:30,011 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 15:50:30,011 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 15:50:30,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:30,177 INFO L129 PetriNetUnfolder]: 73/571 cut-off events. [2022-04-18 15:50:30,178 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:30,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 571 events. 73/571 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3113 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-04-18 15:50:30,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:30,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:30,234 INFO L129 PetriNetUnfolder]: 17/150 cut-off events. [2022-04-18 15:50:30,234 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:30,234 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:30,235 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:30,236 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash 675582691, now seen corresponding path program 1 times [2022-04-18 15:50:30,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:30,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367020108] [2022-04-18 15:50:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:30,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367020108] [2022-04-18 15:50:30,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367020108] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:30,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:30,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341461210] [2022-04-18 15:50:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:30,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:30,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:30,524 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 360 [2022-04-18 15:50:30,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 360 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:30,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 360 [2022-04-18 15:50:30,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:30,676 INFO L129 PetriNetUnfolder]: 10/507 cut-off events. [2022-04-18 15:50:30,676 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:50:30,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 507 events. 10/507 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2394 event pairs, 0 based on Foata normal form. 62/524 useless extension candidates. Maximal degree in co-relation 282. Up to 10 conditions per place. [2022-04-18 15:50:30,684 INFO L132 encePairwiseOnDemand]: 319/360 looper letters, 11 selfloop transitions, 2 changer transitions 0/323 dead transitions. [2022-04-18 15:50:30,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 323 transitions, 680 flow [2022-04-18 15:50:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-04-18 15:50:30,707 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9101851851851852 [2022-04-18 15:50:30,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-04-18 15:50:30,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-04-18 15:50:30,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:30,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-04-18 15:50:30,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,738 INFO L186 Difference]: Start difference. First operand has 318 places, 360 transitions, 728 flow. Second operand 3 states and 983 transitions. [2022-04-18 15:50:30,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 323 transitions, 680 flow [2022-04-18 15:50:30,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 323 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:30,757 INFO L242 Difference]: Finished difference. Result has 318 places, 320 transitions, 658 flow [2022-04-18 15:50:30,760 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=318, PETRI_TRANSITIONS=320} [2022-04-18 15:50:30,763 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 0 predicate places. [2022-04-18 15:50:30,763 INFO L478 AbstractCegarLoop]: Abstraction has has 318 places, 320 transitions, 658 flow [2022-04-18 15:50:30,764 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:30,765 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:30,765 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:50:30,765 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1096004172, now seen corresponding path program 1 times [2022-04-18 15:50:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:30,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457513599] [2022-04-18 15:50:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:30,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457513599] [2022-04-18 15:50:30,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457513599] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:30,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313149073] [2022-04-18 15:50:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:30,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:30,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:30,843 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 15:50:30,870 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 15:50:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:30,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:30,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313149073] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:31,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:31,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:31,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494557968] [2022-04-18 15:50:31,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:31,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:31,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:31,194 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:31,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 320 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:31,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:31,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:31,370 INFO L129 PetriNetUnfolder]: 10/514 cut-off events. [2022-04-18 15:50:31,370 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 15:50:31,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 514 events. 10/514 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 509. Up to 7 conditions per place. [2022-04-18 15:50:31,377 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 12 selfloop transitions, 9 changer transitions 0/330 dead transitions. [2022-04-18 15:50:31,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 330 transitions, 722 flow [2022-04-18 15:50:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2804 transitions. [2022-04-18 15:50:31,387 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8654320987654321 [2022-04-18 15:50:31,387 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2804 transitions. [2022-04-18 15:50:31,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2804 transitions. [2022-04-18 15:50:31,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:31,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2804 transitions. [2022-04-18 15:50:31,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.55555555555554) internal successors, (2804), 9 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,412 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,413 INFO L186 Difference]: Start difference. First operand has 318 places, 320 transitions, 658 flow. Second operand 9 states and 2804 transitions. [2022-04-18 15:50:31,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 330 transitions, 722 flow [2022-04-18 15:50:31,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 330 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:31,423 INFO L242 Difference]: Finished difference. Result has 328 places, 326 transitions, 706 flow [2022-04-18 15:50:31,424 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=328, PETRI_TRANSITIONS=326} [2022-04-18 15:50:31,425 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 10 predicate places. [2022-04-18 15:50:31,425 INFO L478 AbstractCegarLoop]: Abstraction has has 328 places, 326 transitions, 706 flow [2022-04-18 15:50:31,427 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,427 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:31,428 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:31,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:31,647 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:31,648 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 684620972, now seen corresponding path program 2 times [2022-04-18 15:50:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:31,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842174642] [2022-04-18 15:50:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:31,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842174642] [2022-04-18 15:50:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842174642] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:31,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444118578] [2022-04-18 15:50:31,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:31,751 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 15:50:31,790 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 15:50:31,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 15:50:31,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 15:50:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:32,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444118578] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:32,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:32,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-04-18 15:50:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195593536] [2022-04-18 15:50:32,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:32,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-18 15:50:32,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:32,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-18 15:50:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-18 15:50:32,114 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:32,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 326 transitions, 706 flow. Second operand has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:32,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:32,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:32,364 INFO L129 PetriNetUnfolder]: 10/534 cut-off events. [2022-04-18 15:50:32,364 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-04-18 15:50:32,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 534 events. 10/534 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 4/494 useless extension candidates. Maximal degree in co-relation 485. Up to 11 conditions per place. [2022-04-18 15:50:32,370 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 20 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2022-04-18 15:50:32,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 350 transitions, 896 flow [2022-04-18 15:50:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 15:50:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 15:50:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6534 transitions. [2022-04-18 15:50:32,382 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2022-04-18 15:50:32,382 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6534 transitions. [2022-04-18 15:50:32,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6534 transitions. [2022-04-18 15:50:32,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:32,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6534 transitions. [2022-04-18 15:50:32,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.14285714285717) internal successors, (6534), 21 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,411 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,412 INFO L186 Difference]: Start difference. First operand has 328 places, 326 transitions, 706 flow. Second operand 21 states and 6534 transitions. [2022-04-18 15:50:32,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 350 transitions, 896 flow [2022-04-18 15:50:32,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 350 transitions, 882 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:32,419 INFO L242 Difference]: Finished difference. Result has 352 places, 339 transitions, 830 flow [2022-04-18 15:50:32,420 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=830, PETRI_PLACES=352, PETRI_TRANSITIONS=339} [2022-04-18 15:50:32,420 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 34 predicate places. [2022-04-18 15:50:32,421 INFO L478 AbstractCegarLoop]: Abstraction has has 352 places, 339 transitions, 830 flow [2022-04-18 15:50:32,423 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,423 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:32,423 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:32,448 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 15:50:32,645 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,SelfDestructingSolverStorable2 [2022-04-18 15:50:32,646 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:32,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:32,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1675253396, now seen corresponding path program 3 times [2022-04-18 15:50:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:32,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695861398] [2022-04-18 15:50:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:32,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695861398] [2022-04-18 15:50:32,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695861398] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:32,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003443166] [2022-04-18 15:50:32,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 15:50:32,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:32,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:32,834 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 15:50:32,845 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 15:50:32,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-18 15:50:32,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 15:50:32,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:33,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:33,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003443166] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:33,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:33,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-04-18 15:50:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367389920] [2022-04-18 15:50:33,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:33,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-18 15:50:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:33,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-18 15:50:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-04-18 15:50:33,356 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:33,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 339 transitions, 830 flow. Second operand has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:33,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:33,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:33,783 INFO L129 PetriNetUnfolder]: 10/549 cut-off events. [2022-04-18 15:50:33,783 INFO L130 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-04-18 15:50:33,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 549 events. 10/549 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 489. Up to 17 conditions per place. [2022-04-18 15:50:33,789 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 26 selfloop transitions, 30 changer transitions 0/365 dead transitions. [2022-04-18 15:50:33,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 365 transitions, 1088 flow [2022-04-18 15:50:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-18 15:50:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-04-18 15:50:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9329 transitions. [2022-04-18 15:50:33,805 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8637962962962963 [2022-04-18 15:50:33,805 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9329 transitions. [2022-04-18 15:50:33,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9329 transitions. [2022-04-18 15:50:33,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:33,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9329 transitions. [2022-04-18 15:50:33,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.96666666666664) internal successors, (9329), 30 states have internal predecessors, (9329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,844 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,844 INFO L186 Difference]: Start difference. First operand has 352 places, 339 transitions, 830 flow. Second operand 30 states and 9329 transitions. [2022-04-18 15:50:33,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 365 transitions, 1088 flow [2022-04-18 15:50:33,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 365 transitions, 1058 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-04-18 15:50:33,854 INFO L242 Difference]: Finished difference. Result has 379 places, 349 transitions, 958 flow [2022-04-18 15:50:33,855 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=958, PETRI_PLACES=379, PETRI_TRANSITIONS=349} [2022-04-18 15:50:33,856 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 61 predicate places. [2022-04-18 15:50:33,856 INFO L478 AbstractCegarLoop]: Abstraction has has 379 places, 349 transitions, 958 flow [2022-04-18 15:50:33,859 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,859 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:33,859 INFO L255 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:33,886 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 15:50:34,075 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:34,076 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1762761981, now seen corresponding path program 4 times [2022-04-18 15:50:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:34,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739230530] [2022-04-18 15:50:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:34,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:34,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:34,199 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:34,200 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 15:50:34,201 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 15:50:34,202 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 15:50:34,206 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 15:50:34,206 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 15:50:34,206 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 15:50:34,207 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 15:50:34,207 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 15:50:34,208 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 15:50:34,208 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 15:50:34,208 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 15:50:34,208 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 15:50:34,209 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 15:50:34,209 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 15:50:34,209 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 15:50:34,209 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 15:50:34,209 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 15:50:34,210 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 15:50:34,210 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 15:50:34,210 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 15:50:34,210 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 15:50:34,211 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 15:50:34,211 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:50:34,214 INFO L719 BasicCegarLoop]: Path program histogram: [4, 1] [2022-04-18 15:50:34,216 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:34,216 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:50:34,276 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:50:34,278 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:34,282 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 15:50:34,283 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 15:50:34,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:34,410 INFO L129 PetriNetUnfolder]: 118/919 cut-off events. [2022-04-18 15:50:34,411 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:50:34,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 919 events. 118/919 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5816 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-04-18 15:50:34,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:34,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:34,474 INFO L129 PetriNetUnfolder]: 17/147 cut-off events. [2022-04-18 15:50:34,474 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:34,474 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:34,474 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] [2022-04-18 15:50:34,475 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:34,475 INFO L85 PathProgramCache]: Analyzing trace with hash 692731205, now seen corresponding path program 1 times [2022-04-18 15:50:34,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104392296] [2022-04-18 15:50:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:34,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:34,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104392296] [2022-04-18 15:50:34,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104392296] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:34,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:34,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:34,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725701329] [2022-04-18 15:50:34,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:34,511 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:50:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:50:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:50:34,513 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 466 [2022-04-18 15:50:34,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 466 transitions, 950 flow. Second operand has 2 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:34,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 466 [2022-04-18 15:50:34,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:34,671 INFO L129 PetriNetUnfolder]: 17/810 cut-off events. [2022-04-18 15:50:34,673 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:50:34,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 810 events. 17/810 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4784 event pairs, 0 based on Foata normal form. 124/861 useless extension candidates. Maximal degree in co-relation 507. Up to 7 conditions per place. [2022-04-18 15:50:34,687 INFO L132 encePairwiseOnDemand]: 416/466 looper letters, 4 selfloop transitions, 0 changer transitions 0/412 dead transitions. [2022-04-18 15:50:34,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 412 transitions, 850 flow [2022-04-18 15:50:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:50:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:50:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 870 transitions. [2022-04-18 15:50:34,691 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9334763948497854 [2022-04-18 15:50:34,691 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 870 transitions. [2022-04-18 15:50:34,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 870 transitions. [2022-04-18 15:50:34,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:34,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 870 transitions. [2022-04-18 15:50:34,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 435.0) internal successors, (870), 2 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,695 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,696 INFO L186 Difference]: Start difference. First operand has 411 places, 466 transitions, 950 flow. Second operand 2 states and 870 transitions. [2022-04-18 15:50:34,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 412 transitions, 850 flow [2022-04-18 15:50:34,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 412 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:34,704 INFO L242 Difference]: Finished difference. Result has 408 places, 412 transitions, 842 flow [2022-04-18 15:50:34,704 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=408, PETRI_TRANSITIONS=412} [2022-04-18 15:50:34,707 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, -3 predicate places. [2022-04-18 15:50:34,707 INFO L478 AbstractCegarLoop]: Abstraction has has 408 places, 412 transitions, 842 flow [2022-04-18 15:50:34,708 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,708 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:34,708 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] [2022-04-18 15:50:34,708 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:50:34,709 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1992012664, now seen corresponding path program 1 times [2022-04-18 15:50:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:34,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305850673] [2022-04-18 15:50:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:34,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:34,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305850673] [2022-04-18 15:50:34,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305850673] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:34,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:34,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715251556] [2022-04-18 15:50:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:34,732 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:34,734 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-04-18 15:50:34,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 412 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:34,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-04-18 15:50:34,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:34,870 INFO L129 PetriNetUnfolder]: 17/814 cut-off events. [2022-04-18 15:50:34,870 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:50:34,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 814 events. 17/814 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4781 event pairs, 0 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 842. Up to 14 conditions per place. [2022-04-18 15:50:34,886 INFO L132 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2022-04-18 15:50:34,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 416 transitions, 880 flow [2022-04-18 15:50:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-04-18 15:50:34,889 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-04-18 15:50:34,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-04-18 15:50:34,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-04-18 15:50:34,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:34,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-04-18 15:50:34,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,895 INFO L186 Difference]: Start difference. First operand has 408 places, 412 transitions, 842 flow. Second operand 3 states and 1219 transitions. [2022-04-18 15:50:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 416 transitions, 880 flow [2022-04-18 15:50:34,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 416 transitions, 880 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:34,902 INFO L242 Difference]: Finished difference. Result has 411 places, 413 transitions, 854 flow [2022-04-18 15:50:34,902 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=411, PETRI_TRANSITIONS=413} [2022-04-18 15:50:34,903 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 0 predicate places. [2022-04-18 15:50:34,903 INFO L478 AbstractCegarLoop]: Abstraction has has 411 places, 413 transitions, 854 flow [2022-04-18 15:50:34,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,904 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:34,904 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] [2022-04-18 15:50:34,904 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:50:34,904 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1902015645, now seen corresponding path program 1 times [2022-04-18 15:50:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:34,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341176138] [2022-04-18 15:50:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:34,935 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 15:50:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:34,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341176138] [2022-04-18 15:50:34,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341176138] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:34,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846910876] [2022-04-18 15:50:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:34,937 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 15:50:34,945 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 15:50:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:35,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:50:35,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:35,079 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 15:50:35,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846910876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:35,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:35,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:50:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889483106] [2022-04-18 15:50:35,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:35,082 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:35,084 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-04-18 15:50:35,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 413 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:35,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-04-18 15:50:35,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:35,215 INFO L129 PetriNetUnfolder]: 13/649 cut-off events. [2022-04-18 15:50:35,215 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-04-18 15:50:35,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 649 events. 13/649 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3432 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 685. Up to 16 conditions per place. [2022-04-18 15:50:35,232 INFO L132 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-04-18 15:50:35,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 417 transitions, 892 flow [2022-04-18 15:50:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-04-18 15:50:35,235 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-04-18 15:50:35,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-04-18 15:50:35,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-04-18 15:50:35,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:35,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-04-18 15:50:35,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,240 INFO L186 Difference]: Start difference. First operand has 411 places, 413 transitions, 854 flow. Second operand 3 states and 1219 transitions. [2022-04-18 15:50:35,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 417 transitions, 892 flow [2022-04-18 15:50:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 417 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:35,270 INFO L242 Difference]: Finished difference. Result has 413 places, 414 transitions, 864 flow [2022-04-18 15:50:35,271 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=413, PETRI_TRANSITIONS=414} [2022-04-18 15:50:35,271 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-04-18 15:50:35,271 INFO L478 AbstractCegarLoop]: Abstraction has has 413 places, 414 transitions, 864 flow [2022-04-18 15:50:35,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:35,272 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:35,299 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 15:50:35,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:35,496 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:35,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1279722779, now seen corresponding path program 1 times [2022-04-18 15:50:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:35,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156379434] [2022-04-18 15:50:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156379434] [2022-04-18 15:50:35,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156379434] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890809935] [2022-04-18 15:50:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:35,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:35,549 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 15:50:35,573 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 15:50:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:35,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:35,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890809935] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:35,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:35,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:35,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572675458] [2022-04-18 15:50:35,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:35,807 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:35,811 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:35,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 414 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:35,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:35,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,003 INFO L129 PetriNetUnfolder]: 13/656 cut-off events. [2022-04-18 15:50:36,004 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-04-18 15:50:36,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 656 events. 13/656 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 703. Up to 11 conditions per place. [2022-04-18 15:50:36,020 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 14 selfloop transitions, 9 changer transitions 0/424 dead transitions. [2022-04-18 15:50:36,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 424 transitions, 932 flow [2022-04-18 15:50:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3625 transitions. [2022-04-18 15:50:36,030 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8643299952312827 [2022-04-18 15:50:36,030 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3625 transitions. [2022-04-18 15:50:36,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3625 transitions. [2022-04-18 15:50:36,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:36,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3625 transitions. [2022-04-18 15:50:36,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.77777777777777) internal successors, (3625), 9 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,045 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,045 INFO L186 Difference]: Start difference. First operand has 413 places, 414 transitions, 864 flow. Second operand 9 states and 3625 transitions. [2022-04-18 15:50:36,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 424 transitions, 932 flow [2022-04-18 15:50:36,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 424 transitions, 930 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:36,053 INFO L242 Difference]: Finished difference. Result has 423 places, 420 transitions, 912 flow [2022-04-18 15:50:36,054 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=423, PETRI_TRANSITIONS=420} [2022-04-18 15:50:36,054 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 12 predicate places. [2022-04-18 15:50:36,054 INFO L478 AbstractCegarLoop]: Abstraction has has 423 places, 420 transitions, 912 flow [2022-04-18 15:50:36,055 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,056 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,056 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:36,082 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 15:50:36,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:36,279 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1448737851, now seen corresponding path program 2 times [2022-04-18 15:50:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431480841] [2022-04-18 15:50:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431480841] [2022-04-18 15:50:36,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431480841] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:36,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958517771] [2022-04-18 15:50:36,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:36,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:36,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:36,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-18 15:50:36,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 15:50:36,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:36,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 15:50:36,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:36,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958517771] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:36,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:36,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-04-18 15:50:36,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880584928] [2022-04-18 15:50:36,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:36,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-18 15:50:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-18 15:50:36,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-18 15:50:36,681 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:36,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 420 transitions, 912 flow. Second operand has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:36,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:36,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,944 INFO L129 PetriNetUnfolder]: 13/676 cut-off events. [2022-04-18 15:50:36,944 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-04-18 15:50:36,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 676 events. 13/676 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 790. Up to 11 conditions per place. [2022-04-18 15:50:36,966 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 22 selfloop transitions, 21 changer transitions 0/444 dead transitions. [2022-04-18 15:50:36,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 444 transitions, 1106 flow [2022-04-18 15:50:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 15:50:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 15:50:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8447 transitions. [2022-04-18 15:50:36,983 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8631718781933374 [2022-04-18 15:50:36,983 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8447 transitions. [2022-04-18 15:50:36,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8447 transitions. [2022-04-18 15:50:36,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:36,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8447 transitions. [2022-04-18 15:50:37,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 402.23809523809524) internal successors, (8447), 21 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,020 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,020 INFO L186 Difference]: Start difference. First operand has 423 places, 420 transitions, 912 flow. Second operand 21 states and 8447 transitions. [2022-04-18 15:50:37,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 444 transitions, 1106 flow [2022-04-18 15:50:37,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 444 transitions, 1092 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:37,029 INFO L242 Difference]: Finished difference. Result has 447 places, 433 transitions, 1036 flow [2022-04-18 15:50:37,030 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1036, PETRI_PLACES=447, PETRI_TRANSITIONS=433} [2022-04-18 15:50:37,031 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 36 predicate places. [2022-04-18 15:50:37,031 INFO L478 AbstractCegarLoop]: Abstraction has has 447 places, 433 transitions, 1036 flow [2022-04-18 15:50:37,032 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,033 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:37,033 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:37,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:37,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:37,256 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash 738898555, now seen corresponding path program 3 times [2022-04-18 15:50:37,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:37,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845461880] [2022-04-18 15:50:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:37,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845461880] [2022-04-18 15:50:37,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845461880] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:37,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732823298] [2022-04-18 15:50:37,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 15:50:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:37,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:37,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-18 15:50:37,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-18 15:50:37,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:37,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 15:50:37,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:37,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:37,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732823298] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:37,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:37,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-04-18 15:50:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031748417] [2022-04-18 15:50:37,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:37,907 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-18 15:50:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-18 15:50:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-04-18 15:50:37,915 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:37,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 433 transitions, 1036 flow. Second operand has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:37,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:37,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:38,330 INFO L129 PetriNetUnfolder]: 13/691 cut-off events. [2022-04-18 15:50:38,330 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-04-18 15:50:38,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 691 events. 13/691 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 886. Up to 17 conditions per place. [2022-04-18 15:50:38,344 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 28 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2022-04-18 15:50:38,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 459 transitions, 1298 flow [2022-04-18 15:50:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-18 15:50:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-04-18 15:50:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12061 transitions. [2022-04-18 15:50:38,357 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8627324749642347 [2022-04-18 15:50:38,357 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12061 transitions. [2022-04-18 15:50:38,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12061 transitions. [2022-04-18 15:50:38,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:38,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12061 transitions. [2022-04-18 15:50:38,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 402.03333333333336) internal successors, (12061), 30 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,394 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,395 INFO L186 Difference]: Start difference. First operand has 447 places, 433 transitions, 1036 flow. Second operand 30 states and 12061 transitions. [2022-04-18 15:50:38,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 459 transitions, 1298 flow [2022-04-18 15:50:38,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 459 transitions, 1268 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-04-18 15:50:38,404 INFO L242 Difference]: Finished difference. Result has 474 places, 443 transitions, 1164 flow [2022-04-18 15:50:38,405 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1164, PETRI_PLACES=474, PETRI_TRANSITIONS=443} [2022-04-18 15:50:38,406 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 63 predicate places. [2022-04-18 15:50:38,406 INFO L478 AbstractCegarLoop]: Abstraction has has 474 places, 443 transitions, 1164 flow [2022-04-18 15:50:38,408 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,408 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:38,409 INFO L255 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:38,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:38,635 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:38,636 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash -75184896, now seen corresponding path program 4 times [2022-04-18 15:50:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:38,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253101002] [2022-04-18 15:50:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:38,660 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:38,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:38,684 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:38,684 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-04-18 15:50:38,684 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-04-18 15:50:38,685 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-04-18 15:50:38,686 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-04-18 15:50:38,687 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-04-18 15:50:38,688 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:50:38,688 INFO L719 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-04-18 15:50:38,688 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:38,688 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:50:38,727 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:50:38,728 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:38,728 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 15:50:38,728 INFO L341 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-04-18 15:50:38,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:38,973 INFO L129 PetriNetUnfolder]: 168/1312 cut-off events. [2022-04-18 15:50:38,973 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:50:39,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 1312 events. 168/1312 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8787 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-04-18 15:50:39,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:39,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:39,036 INFO L129 PetriNetUnfolder]: 19/160 cut-off events. [2022-04-18 15:50:39,037 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:39,037 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:39,037 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] [2022-04-18 15:50:39,037 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:39,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2135795003, now seen corresponding path program 1 times [2022-04-18 15:50:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:39,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205587909] [2022-04-18 15:50:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:39,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:39,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205587909] [2022-04-18 15:50:39,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205587909] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:39,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:39,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:39,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715274734] [2022-04-18 15:50:39,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:39,053 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:50:39,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:50:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:50:39,055 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 572 [2022-04-18 15:50:39,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 572 transitions, 1174 flow. Second operand has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:39,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 572 [2022-04-18 15:50:39,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:39,274 INFO L129 PetriNetUnfolder]: 27/1160 cut-off events. [2022-04-18 15:50:39,274 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:50:39,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 1160 events. 27/1160 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7586 event pairs, 1 based on Foata normal form. 250/1305 useless extension candidates. Maximal degree in co-relation 824. Up to 16 conditions per place. [2022-04-18 15:50:39,310 INFO L132 encePairwiseOnDemand]: 510/572 looper letters, 6 selfloop transitions, 0 changer transitions 0/505 dead transitions. [2022-04-18 15:50:39,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 505 transitions, 1052 flow [2022-04-18 15:50:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:50:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:50:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1066 transitions. [2022-04-18 15:50:39,312 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9318181818181818 [2022-04-18 15:50:39,312 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1066 transitions. [2022-04-18 15:50:39,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1066 transitions. [2022-04-18 15:50:39,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:39,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1066 transitions. [2022-04-18 15:50:39,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 533.0) internal successors, (1066), 2 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,316 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,316 INFO L186 Difference]: Start difference. First operand has 504 places, 572 transitions, 1174 flow. Second operand 2 states and 1066 transitions. [2022-04-18 15:50:39,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 505 transitions, 1052 flow [2022-04-18 15:50:39,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 505 transitions, 1052 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:39,324 INFO L242 Difference]: Finished difference. Result has 500 places, 505 transitions, 1040 flow [2022-04-18 15:50:39,325 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1040, PETRI_PLACES=500, PETRI_TRANSITIONS=505} [2022-04-18 15:50:39,325 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, -4 predicate places. [2022-04-18 15:50:39,326 INFO L478 AbstractCegarLoop]: Abstraction has has 500 places, 505 transitions, 1040 flow [2022-04-18 15:50:39,326 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,326 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:39,326 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] [2022-04-18 15:50:39,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:50:39,326 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash 207046708, now seen corresponding path program 1 times [2022-04-18 15:50:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187065839] [2022-04-18 15:50:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:39,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187065839] [2022-04-18 15:50:39,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187065839] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:39,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:39,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:39,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330546796] [2022-04-18 15:50:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:39,344 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:39,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:39,346 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-04-18 15:50:39,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 505 transitions, 1040 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:39,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-04-18 15:50:39,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:39,579 INFO L129 PetriNetUnfolder]: 27/1164 cut-off events. [2022-04-18 15:50:39,580 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:50:39,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1164 events. 27/1164 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7584 event pairs, 1 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1214. Up to 23 conditions per place. [2022-04-18 15:50:39,616 INFO L132 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-04-18 15:50:39,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 509 transitions, 1082 flow [2022-04-18 15:50:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-04-18 15:50:39,618 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-04-18 15:50:39,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-04-18 15:50:39,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-04-18 15:50:39,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:39,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-04-18 15:50:39,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,623 INFO L186 Difference]: Start difference. First operand has 500 places, 505 transitions, 1040 flow. Second operand 3 states and 1494 transitions. [2022-04-18 15:50:39,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 509 transitions, 1082 flow [2022-04-18 15:50:39,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 509 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:39,631 INFO L242 Difference]: Finished difference. Result has 503 places, 506 transitions, 1052 flow [2022-04-18 15:50:39,632 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=503, PETRI_TRANSITIONS=506} [2022-04-18 15:50:39,633 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, -1 predicate places. [2022-04-18 15:50:39,633 INFO L478 AbstractCegarLoop]: Abstraction has has 503 places, 506 transitions, 1052 flow [2022-04-18 15:50:39,633 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,633 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:39,633 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] [2022-04-18 15:50:39,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:50:39,634 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 322414749, now seen corresponding path program 1 times [2022-04-18 15:50:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:39,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343490248] [2022-04-18 15:50:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:39,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:39,661 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 15:50:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:39,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343490248] [2022-04-18 15:50:39,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343490248] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:39,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274705758] [2022-04-18 15:50:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:39,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:39,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:39,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-18 15:50:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:39,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:50:39,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:39,817 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 15:50:39,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:39,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274705758] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:39,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:39,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:50:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102522074] [2022-04-18 15:50:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:39,819 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:39,822 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-04-18 15:50:39,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 506 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:39,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-04-18 15:50:39,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:40,062 INFO L129 PetriNetUnfolder]: 23/999 cut-off events. [2022-04-18 15:50:40,063 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-04-18 15:50:40,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 999 events. 23/999 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6100 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1062. Up to 30 conditions per place. [2022-04-18 15:50:40,099 INFO L132 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/510 dead transitions. [2022-04-18 15:50:40,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 510 transitions, 1094 flow [2022-04-18 15:50:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-04-18 15:50:40,101 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-04-18 15:50:40,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-04-18 15:50:40,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-04-18 15:50:40,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:40,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-04-18 15:50:40,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,106 INFO L186 Difference]: Start difference. First operand has 503 places, 506 transitions, 1052 flow. Second operand 3 states and 1494 transitions. [2022-04-18 15:50:40,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 510 transitions, 1094 flow [2022-04-18 15:50:40,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 510 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:40,115 INFO L242 Difference]: Finished difference. Result has 505 places, 507 transitions, 1062 flow [2022-04-18 15:50:40,116 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1062, PETRI_PLACES=505, PETRI_TRANSITIONS=507} [2022-04-18 15:50:40,117 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, 1 predicate places. [2022-04-18 15:50:40,117 INFO L478 AbstractCegarLoop]: Abstraction has has 505 places, 507 transitions, 1062 flow [2022-04-18 15:50:40,118 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,118 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:40,118 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:40,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:40,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-18 15:50:40,340 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:40,341 INFO L85 PathProgramCache]: Analyzing trace with hash 775634102, now seen corresponding path program 1 times [2022-04-18 15:50:40,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667191186] [2022-04-18 15:50:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:40,377 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 15:50:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667191186] [2022-04-18 15:50:40,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667191186] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789695881] [2022-04-18 15:50:40,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:40,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:40,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-18 15:50:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:40,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:40,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:40,575 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 15:50:40,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:40,665 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 15:50:40,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789695881] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:40,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:40,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539929842] [2022-04-18 15:50:40,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:40,666 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:40,672 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-04-18 15:50:40,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 507 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:40,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:40,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-04-18 15:50:40,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:40,956 INFO L129 PetriNetUnfolder]: 23/1006 cut-off events. [2022-04-18 15:50:40,957 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-04-18 15:50:40,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 1006 events. 23/1006 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6113 event pairs, 1 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 1077. Up to 20 conditions per place. [2022-04-18 15:50:40,992 INFO L132 encePairwiseOnDemand]: 566/572 looper letters, 16 selfloop transitions, 9 changer transitions 0/517 dead transitions. [2022-04-18 15:50:40,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 517 transitions, 1134 flow [2022-04-18 15:50:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4446 transitions. [2022-04-18 15:50:40,998 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-04-18 15:50:40,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4446 transitions. [2022-04-18 15:50:40,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4446 transitions. [2022-04-18 15:50:40,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:40,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4446 transitions. [2022-04-18 15:50:41,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 494.0) internal successors, (4446), 9 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:41,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:41,009 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:41,009 INFO L186 Difference]: Start difference. First operand has 505 places, 507 transitions, 1062 flow. Second operand 9 states and 4446 transitions. [2022-04-18 15:50:41,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 517 transitions, 1134 flow [2022-04-18 15:50:41,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 517 transitions, 1132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:41,018 INFO L242 Difference]: Finished difference. Result has 515 places, 513 transitions, 1110 flow [2022-04-18 15:50:41,019 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1110, PETRI_PLACES=515, PETRI_TRANSITIONS=513} [2022-04-18 15:50:41,019 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, 11 predicate places. [2022-04-18 15:50:41,019 INFO L478 AbstractCegarLoop]: Abstraction has has 515 places, 513 transitions, 1110 flow [2022-04-18 15:50:41,020 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:41,020 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:41,020 INFO L255 CegarLoopForPetriNet]: trace histogram [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] [2022-04-18 15:50:41,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:41,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-18 15:50:41,239 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 554692374, now seen corresponding path program 2 times [2022-04-18 15:50:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:41,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690298467] [2022-04-18 15:50:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:41,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690298467] [2022-04-18 15:50:41,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690298467] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141699646] [2022-04-18 15:50:41,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:41,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:41,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:41,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-18 15:50:41,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:50:41,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:41,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:50:41,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:41,550 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 15:50:41,575 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:50:41,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:50:41,610 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:50:41,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:50:41,654 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:50:41,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:50:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-18 15:50:41,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:41,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141699646] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:41,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:41,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-04-18 15:50:41,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742784859] [2022-04-18 15:50:41,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:41,675 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:41,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:41,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-18 15:50:41,677 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 572 [2022-04-18 15:50:41,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 513 transitions, 1110 flow. Second operand has 6 states, 6 states have (on average 335.6666666666667) internal successors, (2014), 6 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:41,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:41,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 572 [2022-04-18 15:50:41,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand