./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:06:35,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:06:35,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:06:35,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:06:35,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:06:35,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:06:35,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:06:35,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:06:35,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:06:35,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:06:35,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:06:35,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:06:35,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:06:35,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:06:35,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:06:35,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:06:35,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:06:35,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:06:35,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:06:35,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:06:35,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:06:35,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:06:35,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:06:35,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:06:35,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:06:35,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:06:35,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:06:35,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:06:35,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:06:35,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:06:35,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:06:35,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:06:35,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:06:35,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:06:35,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:06:35,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:06:35,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:06:35,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:06:35,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:06:35,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:06:35,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:06:35,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:06:35,826 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:06:35,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:06:35,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:06:35,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:06:35,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:06:35,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:06:35,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:06:35,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:06:35,830 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:06:35,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:06:35,831 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:06:35,831 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:06:35,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:06:35,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:06:35,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:06:35,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:06:35,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:06:35,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:06:35,833 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:06:35,833 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:06:35,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:06:35,833 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:06:35,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:06:35,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:06:35,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:06:35,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:06:35,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:06:35,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:06:35,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:06:35,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:06:35,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:06:35,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:06:35,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:06:35,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:06:35,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:06:35,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:06:35,836 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:06:35,836 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:06:36,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:06:36,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:06:36,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:06:36,185 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:06:36,185 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:06:36,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-29 02:06:37,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:06:37,688 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:06:37,688 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-08-29 02:06:37,702 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2667e308d/26df494dfd654dfab97919d585d31ce2/FLAG56d72c36b [2023-08-29 02:06:37,999 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2667e308d/26df494dfd654dfab97919d585d31ce2 [2023-08-29 02:06:38,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:06:38,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:06:38,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:06:38,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:06:38,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:06:38,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:06:37" (1/1) ... [2023-08-29 02:06:38,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6336dcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38, skipping insertion in model container [2023-08-29 02:06:38,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:06:37" (1/1) ... [2023-08-29 02:06:38,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:06:38,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:06:38,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:06:38,419 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:06:38,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:06:38,548 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:06:38,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38 WrapperNode [2023-08-29 02:06:38,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:06:38,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:06:38,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:06:38,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:06:38,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,624 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-08-29 02:06:38,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:06:38,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:06:38,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:06:38,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:06:38,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:06:38,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:06:38,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:06:38,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:06:38,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (1/1) ... [2023-08-29 02:06:38,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:06:38,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:06:38,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 02:06:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:06:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:06:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:06:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:06:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:06:38,766 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:06:38,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 02:06:38,960 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:06:38,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:06:39,178 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:06:39,185 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:06:39,185 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 02:06:39,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:06:39 BoogieIcfgContainer [2023-08-29 02:06:39,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:06:39,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:06:39,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:06:39,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:06:39,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:06:37" (1/3) ... [2023-08-29 02:06:39,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1f178b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:06:39, skipping insertion in model container [2023-08-29 02:06:39,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:06:38" (2/3) ... [2023-08-29 02:06:39,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1f178b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:06:39, skipping insertion in model container [2023-08-29 02:06:39,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:06:39" (3/3) ... [2023-08-29 02:06:39,194 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-08-29 02:06:39,200 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:06:39,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:06:39,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 02:06:39,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:06:39,257 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:06:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 207 flow [2023-08-29 02:06:39,318 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-29 02:06:39,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:06:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-29 02:06:39,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 101 transitions, 207 flow [2023-08-29 02:06:39,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 100 transitions, 203 flow [2023-08-29 02:06:39,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:06:39,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-29 02:06:39,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 100 transitions, 203 flow [2023-08-29 02:06:39,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 100 transitions, 203 flow [2023-08-29 02:06:39,376 INFO L130 PetriNetUnfolder]: 4/100 cut-off events. [2023-08-29 02:06:39,377 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:06:39,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-29 02:06:39,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 2262 [2023-08-29 02:06:41,058 INFO L134 LiptonReduction]: Checked pairs total: 9365 [2023-08-29 02:06:41,058 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-29 02:06:41,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:06:41,076 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7430fd27, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:06:41,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-29 02:06:41,082 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-08-29 02:06:41,082 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:06:41,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:41,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:41,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:41,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -628209357, now seen corresponding path program 1 times [2023-08-29 02:06:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:41,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230578541] [2023-08-29 02:06:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:41,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:41,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230578541] [2023-08-29 02:06:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230578541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:41,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:41,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:06:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982597776] [2023-08-29 02:06:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:41,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:06:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:06:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:06:41,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 176 [2023-08-29 02:06:41,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:41,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 176 [2023-08-29 02:06:41,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:41,443 INFO L130 PetriNetUnfolder]: 37/165 cut-off events. [2023-08-29 02:06:41,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:06:41,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 630 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-08-29 02:06:41,446 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-29 02:06:41,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-08-29 02:06:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:06:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:06:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-29 02:06:41,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2023-08-29 02:06:41,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-29 02:06:41,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-29 02:06:41,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:41,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-29 02:06:41,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,531 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 79 flow. Second operand 3 states and 298 transitions. [2023-08-29 02:06:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-08-29 02:06:41,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:06:41,534 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-29 02:06:41,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-29 02:06:41,538 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-29 02:06:41,538 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-29 02:06:41,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:41,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:41,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:06:41,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:41,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash -369379357, now seen corresponding path program 1 times [2023-08-29 02:06:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707505618] [2023-08-29 02:06:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707505618] [2023-08-29 02:06:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707505618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:06:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473069488] [2023-08-29 02:06:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:06:41,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:06:41,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:06:41,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:06:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:06:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:06:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:41,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:06:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473069488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:06:41,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:06:41,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-29 02:06:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290848208] [2023-08-29 02:06:41,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:06:41,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:06:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:06:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:06:41,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-29 02:06:41,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:41,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-29 02:06:41,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:41,835 INFO L130 PetriNetUnfolder]: 37/168 cut-off events. [2023-08-29 02:06:41,848 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:06:41,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-08-29 02:06:41,850 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-29 02:06:41,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-08-29 02:06:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:06:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:06:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-08-29 02:06:41,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445075757575758 [2023-08-29 02:06:41,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-08-29 02:06:41,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-08-29 02:06:41,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:41,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-08-29 02:06:41,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,872 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 575 transitions. [2023-08-29 02:06:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-08-29 02:06:41,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 02:06:41,874 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-29 02:06:41,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-29 02:06:41,882 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-29 02:06:41,882 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-29 02:06:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:41,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:41,883 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:41,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:06:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:06:42,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:42,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1157557643, now seen corresponding path program 2 times [2023-08-29 02:06:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:42,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595692138] [2023-08-29 02:06:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:42,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 02:06:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:42,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595692138] [2023-08-29 02:06:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595692138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:42,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:06:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649043082] [2023-08-29 02:06:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:42,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:06:42,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:06:42,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:06:42,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 176 [2023-08-29 02:06:42,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:42,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:42,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 176 [2023-08-29 02:06:42,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:42,829 INFO L130 PetriNetUnfolder]: 162/398 cut-off events. [2023-08-29 02:06:42,829 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:06:42,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 398 events. 162/398 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1687 event pairs, 74 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 752. Up to 265 conditions per place. [2023-08-29 02:06:42,836 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 52 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2023-08-29 02:06:42,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 350 flow [2023-08-29 02:06:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:06:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:06:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2023-08-29 02:06:42,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274621212121212 [2023-08-29 02:06:42,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2023-08-29 02:06:42,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2023-08-29 02:06:42,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:42,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2023-08-29 02:06:42,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:42,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:42,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:42,846 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 557 transitions. [2023-08-29 02:06:42,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 350 flow [2023-08-29 02:06:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 02:06:42,850 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 254 flow [2023-08-29 02:06:42,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-08-29 02:06:42,851 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2023-08-29 02:06:42,851 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 254 flow [2023-08-29 02:06:42,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:42,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:42,852 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:06:42,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:42,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1092228275, now seen corresponding path program 1 times [2023-08-29 02:06:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:42,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884624089] [2023-08-29 02:06:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:42,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 02:06:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884624089] [2023-08-29 02:06:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884624089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:43,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:06:43,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037127260] [2023-08-29 02:06:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:43,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:06:43,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:06:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:06:43,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 176 [2023-08-29 02:06:43,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:43,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 176 [2023-08-29 02:06:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:43,370 INFO L130 PetriNetUnfolder]: 190/476 cut-off events. [2023-08-29 02:06:43,370 INFO L131 PetriNetUnfolder]: For 143/146 co-relation queries the response was YES. [2023-08-29 02:06:43,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 476 events. 190/476 cut-off events. For 143/146 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2233 event pairs, 76 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1082. Up to 312 conditions per place. [2023-08-29 02:06:43,374 INFO L137 encePairwiseOnDemand]: 165/176 looper letters, 63 selfloop transitions, 26 changer transitions 0/102 dead transitions. [2023-08-29 02:06:43,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 532 flow [2023-08-29 02:06:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:06:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:06:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2023-08-29 02:06:43,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142045454545454 [2023-08-29 02:06:43,376 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2023-08-29 02:06:43,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2023-08-29 02:06:43,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:43,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2023-08-29 02:06:43,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,381 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 254 flow. Second operand 6 states and 543 transitions. [2023-08-29 02:06:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 532 flow [2023-08-29 02:06:43,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:06:43,386 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 438 flow [2023-08-29 02:06:43,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2023-08-29 02:06:43,387 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-08-29 02:06:43,387 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 438 flow [2023-08-29 02:06:43,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:43,388 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:43,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 02:06:43,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:43,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 547459376, now seen corresponding path program 1 times [2023-08-29 02:06:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701503067] [2023-08-29 02:06:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701503067] [2023-08-29 02:06:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701503067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:06:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909531569] [2023-08-29 02:06:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:06:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:06:43,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:06:43,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:06:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:43,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 02:06:43,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:06:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:43,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:06:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:43,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909531569] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:06:43,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:06:43,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-29 02:06:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065486781] [2023-08-29 02:06:43,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:06:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 02:06:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 02:06:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 02:06:43,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 176 [2023-08-29 02:06:43,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:43,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 176 [2023-08-29 02:06:43,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:43,775 INFO L130 PetriNetUnfolder]: 121/375 cut-off events. [2023-08-29 02:06:43,775 INFO L131 PetriNetUnfolder]: For 313/320 co-relation queries the response was YES. [2023-08-29 02:06:43,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 375 events. 121/375 cut-off events. For 313/320 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1848 event pairs, 43 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 933. Up to 154 conditions per place. [2023-08-29 02:06:43,778 INFO L137 encePairwiseOnDemand]: 173/176 looper letters, 26 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-29 02:06:43,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 548 flow [2023-08-29 02:06:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:06:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:06:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1136 transitions. [2023-08-29 02:06:43,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-08-29 02:06:43,782 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1136 transitions. [2023-08-29 02:06:43,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1136 transitions. [2023-08-29 02:06:43,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:43,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1136 transitions. [2023-08-29 02:06:43,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 94.66666666666667) internal successors, (1136), 12 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:06:43,791 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:06:43,791 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 438 flow. Second operand 12 states and 1136 transitions. [2023-08-29 02:06:43,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 548 flow [2023-08-29 02:06:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:06:43,799 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 522 flow [2023-08-29 02:06:43,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-08-29 02:06:43,802 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-08-29 02:06:43,802 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 522 flow [2023-08-29 02:06:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.41666666666667) internal successors, (1121), 12 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:43,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:43,803 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:43,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 02:06:44,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:06:44,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:44,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1366035056, now seen corresponding path program 2 times [2023-08-29 02:06:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503368032] [2023-08-29 02:06:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:06:44,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:44,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503368032] [2023-08-29 02:06:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503368032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:44,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:44,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:06:44,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068899175] [2023-08-29 02:06:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:06:44,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:06:44,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:06:44,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2023-08-29 02:06:44,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:44,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:44,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2023-08-29 02:06:44,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:44,678 INFO L130 PetriNetUnfolder]: 308/716 cut-off events. [2023-08-29 02:06:44,678 INFO L131 PetriNetUnfolder]: For 564/570 co-relation queries the response was YES. [2023-08-29 02:06:44,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 716 events. 308/716 cut-off events. For 564/570 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3393 event pairs, 101 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 2099. Up to 551 conditions per place. [2023-08-29 02:06:44,684 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 91 selfloop transitions, 53 changer transitions 8/156 dead transitions. [2023-08-29 02:06:44,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 1114 flow [2023-08-29 02:06:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:06:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:06:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-29 02:06:44,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-08-29 02:06:44,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-29 02:06:44,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-29 02:06:44,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:44,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-29 02:06:44,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:44,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:44,696 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:44,696 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 522 flow. Second operand 6 states and 540 transitions. [2023-08-29 02:06:44,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 1114 flow [2023-08-29 02:06:44,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 1066 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 02:06:44,704 INFO L231 Difference]: Finished difference. Result has 89 places, 135 transitions, 956 flow [2023-08-29 02:06:44,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=89, PETRI_TRANSITIONS=135} [2023-08-29 02:06:44,706 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 49 predicate places. [2023-08-29 02:06:44,706 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 135 transitions, 956 flow [2023-08-29 02:06:44,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:44,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:44,707 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:44,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:06:44,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:44,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1630893388, now seen corresponding path program 1 times [2023-08-29 02:06:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:44,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077897170] [2023-08-29 02:06:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:06:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:45,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077897170] [2023-08-29 02:06:45,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077897170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:45,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:45,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:06:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765858209] [2023-08-29 02:06:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:45,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:06:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:06:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:06:45,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-29 02:06:45,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 135 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:45,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:45,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-29 02:06:45,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:45,434 INFO L130 PetriNetUnfolder]: 372/858 cut-off events. [2023-08-29 02:06:45,434 INFO L131 PetriNetUnfolder]: For 1202/1213 co-relation queries the response was YES. [2023-08-29 02:06:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 858 events. 372/858 cut-off events. For 1202/1213 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4318 event pairs, 83 based on Foata normal form. 0/833 useless extension candidates. Maximal degree in co-relation 3081. Up to 634 conditions per place. [2023-08-29 02:06:45,441 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 124 selfloop transitions, 61 changer transitions 22/213 dead transitions. [2023-08-29 02:06:45,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 213 transitions, 1792 flow [2023-08-29 02:06:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:06:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:06:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-29 02:06:45,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2023-08-29 02:06:45,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-29 02:06:45,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-29 02:06:45,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:45,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-29 02:06:45,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:45,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:45,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:45,448 INFO L175 Difference]: Start difference. First operand has 89 places, 135 transitions, 956 flow. Second operand 6 states and 527 transitions. [2023-08-29 02:06:45,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 213 transitions, 1792 flow [2023-08-29 02:06:45,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 213 transitions, 1728 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-08-29 02:06:45,461 INFO L231 Difference]: Finished difference. Result has 99 places, 179 transitions, 1448 flow [2023-08-29 02:06:45,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=99, PETRI_TRANSITIONS=179} [2023-08-29 02:06:45,461 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2023-08-29 02:06:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 179 transitions, 1448 flow [2023-08-29 02:06:45,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:45,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:45,462 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:06:45,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:45,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 827926639, now seen corresponding path program 1 times [2023-08-29 02:06:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955971137] [2023-08-29 02:06:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:06:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955971137] [2023-08-29 02:06:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955971137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:06:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:06:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 02:06:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058827353] [2023-08-29 02:06:47,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:06:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:06:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:06:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:06:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 02:06:47,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2023-08-29 02:06:47,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 179 transitions, 1448 flow. Second operand has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:47,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:06:47,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2023-08-29 02:06:47,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:06:47,850 INFO L130 PetriNetUnfolder]: 629/1521 cut-off events. [2023-08-29 02:06:47,850 INFO L131 PetriNetUnfolder]: For 3664/3705 co-relation queries the response was YES. [2023-08-29 02:06:47,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6514 conditions, 1521 events. 629/1521 cut-off events. For 3664/3705 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9909 event pairs, 47 based on Foata normal form. 14/1531 useless extension candidates. Maximal degree in co-relation 6444. Up to 474 conditions per place. [2023-08-29 02:06:47,864 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 273 selfloop transitions, 64 changer transitions 36/405 dead transitions. [2023-08-29 02:06:47,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 405 transitions, 3956 flow [2023-08-29 02:06:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 02:06:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 02:06:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2023-08-29 02:06:47,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47897727272727275 [2023-08-29 02:06:47,868 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2023-08-29 02:06:47,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2023-08-29 02:06:47,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:06:47,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2023-08-29 02:06:47,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:47,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:47,875 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:47,875 INFO L175 Difference]: Start difference. First operand has 99 places, 179 transitions, 1448 flow. Second operand 10 states and 843 transitions. [2023-08-29 02:06:47,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 405 transitions, 3956 flow [2023-08-29 02:06:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 405 transitions, 3838 flow, removed 59 selfloop flow, removed 0 redundant places. [2023-08-29 02:06:47,907 INFO L231 Difference]: Finished difference. Result has 116 places, 233 transitions, 2199 flow [2023-08-29 02:06:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=116, PETRI_TRANSITIONS=233} [2023-08-29 02:06:47,909 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2023-08-29 02:06:47,910 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 233 transitions, 2199 flow [2023-08-29 02:06:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.66666666666667) internal successors, (672), 9 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:06:47,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:06:47,912 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:06:47,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:06:47,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:06:47,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:06:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1766846819, now seen corresponding path program 2 times [2023-08-29 02:06:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:06:47,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633708879] [2023-08-29 02:06:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:06:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:06:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:06:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:06:53,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:06:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633708879] [2023-08-29 02:06:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633708879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:06:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088940517] [2023-08-29 02:06:53,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 02:06:53,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:06:53,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:06:53,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:06:53,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:06:53,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 02:06:53,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:06:53,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-29 02:06:53,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:06:53,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:06:53,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 02:06:53,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 02:06:53,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 02:06:53,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 02:06:53,506 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:06:53,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:06:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2023-08-29 02:06:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 02:06:53,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 02:06:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 02:06:53,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:06:53,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:06:53,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-29 02:07:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:07:08,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:07:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088940517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:07:08,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:07:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 30 [2023-08-29 02:07:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005929779] [2023-08-29 02:07:08,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:07:08,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 02:07:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:07:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 02:07:08,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=812, Unknown=6, NotChecked=0, Total=930 [2023-08-29 02:07:10,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:12,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:14,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:16,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:18,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:20,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:22,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:24,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:26,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:26,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 176 [2023-08-29 02:07:26,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 233 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:26,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:07:26,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 176 [2023-08-29 02:07:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:07:28,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:32,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:34,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:36,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:41,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:43,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:45,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:47,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:07:47,700 INFO L130 PetriNetUnfolder]: 775/1766 cut-off events. [2023-08-29 02:07:47,700 INFO L131 PetriNetUnfolder]: For 6602/6636 co-relation queries the response was YES. [2023-08-29 02:07:47,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8563 conditions, 1766 events. 775/1766 cut-off events. For 6602/6636 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11283 event pairs, 94 based on Foata normal form. 14/1779 useless extension candidates. Maximal degree in co-relation 8485. Up to 1084 conditions per place. [2023-08-29 02:07:47,719 INFO L137 encePairwiseOnDemand]: 159/176 looper letters, 196 selfloop transitions, 95 changer transitions 60/369 dead transitions. [2023-08-29 02:07:47,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 369 transitions, 4091 flow [2023-08-29 02:07:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 02:07:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 02:07:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 781 transitions. [2023-08-29 02:07:47,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-08-29 02:07:47,723 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 781 transitions. [2023-08-29 02:07:47,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 781 transitions. [2023-08-29 02:07:47,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:07:47,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 781 transitions. [2023-08-29 02:07:47,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.1) internal successors, (781), 10 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:47,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:47,728 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:47,728 INFO L175 Difference]: Start difference. First operand has 116 places, 233 transitions, 2199 flow. Second operand 10 states and 781 transitions. [2023-08-29 02:07:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 369 transitions, 4091 flow [2023-08-29 02:07:47,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 369 transitions, 4083 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-29 02:07:47,791 INFO L231 Difference]: Finished difference. Result has 130 places, 255 transitions, 2897 flow [2023-08-29 02:07:47,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=130, PETRI_TRANSITIONS=255} [2023-08-29 02:07:47,792 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 90 predicate places. [2023-08-29 02:07:47,792 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 255 transitions, 2897 flow [2023-08-29 02:07:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.54545454545455) internal successors, (732), 11 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:47,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:07:47,793 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:07:47,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:07:48,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:07:48,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:07:48,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:07:48,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1200895305, now seen corresponding path program 1 times [2023-08-29 02:07:48,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:07:48,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823885875] [2023-08-29 02:07:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:07:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:07:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:07:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:07:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:07:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823885875] [2023-08-29 02:07:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823885875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:07:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:07:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 02:07:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732813464] [2023-08-29 02:07:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:07:49,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 02:07:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:07:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 02:07:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-29 02:07:49,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-29 02:07:49,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 255 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:49,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:07:49,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-29 02:07:49,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:07:50,660 INFO L130 PetriNetUnfolder]: 637/1556 cut-off events. [2023-08-29 02:07:50,661 INFO L131 PetriNetUnfolder]: For 8508/8561 co-relation queries the response was YES. [2023-08-29 02:07:50,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 1556 events. 637/1556 cut-off events. For 8508/8561 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10183 event pairs, 40 based on Foata normal form. 28/1582 useless extension candidates. Maximal degree in co-relation 8184. Up to 472 conditions per place. [2023-08-29 02:07:50,677 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 311 selfloop transitions, 74 changer transitions 52/487 dead transitions. [2023-08-29 02:07:50,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 487 transitions, 5673 flow [2023-08-29 02:07:50,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 02:07:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 02:07:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1360 transitions. [2023-08-29 02:07:50,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-29 02:07:50,681 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1360 transitions. [2023-08-29 02:07:50,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1360 transitions. [2023-08-29 02:07:50,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:07:50,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1360 transitions. [2023-08-29 02:07:50,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 80.0) internal successors, (1360), 17 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:50,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:50,690 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:50,690 INFO L175 Difference]: Start difference. First operand has 130 places, 255 transitions, 2897 flow. Second operand 17 states and 1360 transitions. [2023-08-29 02:07:50,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 487 transitions, 5673 flow [2023-08-29 02:07:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 487 transitions, 5593 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 02:07:50,734 INFO L231 Difference]: Finished difference. Result has 157 places, 306 transitions, 3728 flow [2023-08-29 02:07:50,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3728, PETRI_PLACES=157, PETRI_TRANSITIONS=306} [2023-08-29 02:07:50,736 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 117 predicate places. [2023-08-29 02:07:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 306 transitions, 3728 flow [2023-08-29 02:07:50,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.5) internal successors, (735), 10 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:07:50,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:07:50,737 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:07:50,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:07:50,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:07:50,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:07:50,738 INFO L85 PathProgramCache]: Analyzing trace with hash 870491643, now seen corresponding path program 2 times [2023-08-29 02:07:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:07:50,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405542030] [2023-08-29 02:07:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:07:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:07:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:08:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:08:24,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:08:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405542030] [2023-08-29 02:08:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405542030] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:08:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604766268] [2023-08-29 02:08:24,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 02:08:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:08:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:08:24,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:08:24,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:08:24,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 02:08:24,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:08:24,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 02:08:24,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:08:24,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 02:08:25,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:08:25,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-29 02:08:25,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-29 02:08:25,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-29 02:08:25,303 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-29 02:08:25,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-08-29 02:08:25,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2023-08-29 02:08:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:08:25,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:08:25,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:08:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:08:25,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:08:25,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 98 [2023-08-29 02:08:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:08:33,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:08:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604766268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:08:33,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:08:33,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 30 [2023-08-29 02:08:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281373527] [2023-08-29 02:08:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:08:33,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 02:08:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:08:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 02:08:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=786, Unknown=3, NotChecked=0, Total=930 [2023-08-29 02:08:35,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:37,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:39,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:42,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:44,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:46,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:48,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:50,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:52,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:54,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:56,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:58,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:08:58,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-29 02:08:58,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 306 transitions, 3728 flow. Second operand has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:08:58,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:08:58,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-29 02:08:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:09:02,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:04,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:06,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:08,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:12,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:14,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:16,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:19,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:21,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:23,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:23,444 INFO L130 PetriNetUnfolder]: 877/2017 cut-off events. [2023-08-29 02:09:23,444 INFO L131 PetriNetUnfolder]: For 13414/13487 co-relation queries the response was YES. [2023-08-29 02:09:23,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 2017 events. 877/2017 cut-off events. For 13414/13487 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13616 event pairs, 58 based on Foata normal form. 37/2053 useless extension candidates. Maximal degree in co-relation 11370. Up to 981 conditions per place. [2023-08-29 02:09:23,464 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 283 selfloop transitions, 151 changer transitions 35/504 dead transitions. [2023-08-29 02:09:23,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 504 transitions, 6746 flow [2023-08-29 02:09:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:09:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:09:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 875 transitions. [2023-08-29 02:09:23,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41429924242424243 [2023-08-29 02:09:23,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 875 transitions. [2023-08-29 02:09:23,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 875 transitions. [2023-08-29 02:09:23,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:09:23,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 875 transitions. [2023-08-29 02:09:23,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.91666666666667) internal successors, (875), 12 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:09:23,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:09:23,473 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:09:23,473 INFO L175 Difference]: Start difference. First operand has 157 places, 306 transitions, 3728 flow. Second operand 12 states and 875 transitions. [2023-08-29 02:09:23,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 504 transitions, 6746 flow [2023-08-29 02:09:23,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 504 transitions, 6674 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-08-29 02:09:23,548 INFO L231 Difference]: Finished difference. Result has 166 places, 373 transitions, 5264 flow [2023-08-29 02:09:23,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5264, PETRI_PLACES=166, PETRI_TRANSITIONS=373} [2023-08-29 02:09:23,548 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2023-08-29 02:09:23,549 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 373 transitions, 5264 flow [2023-08-29 02:09:23,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:09:23,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:09:23,549 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:09:23,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:09:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:09:23,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:09:23,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:09:23,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1290687197, now seen corresponding path program 3 times [2023-08-29 02:09:23,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:09:23,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881804744] [2023-08-29 02:09:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:09:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:09:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:09:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:09:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:09:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881804744] [2023-08-29 02:09:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881804744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:09:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805934116] [2023-08-29 02:09:27,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 02:09:27,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:09:27,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:09:27,343 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) [2023-08-29 02:09:27,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 02:09:27,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 02:09:27,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:09:27,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-29 02:09:27,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:09:27,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:09:27,481 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:09:27,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:09:27,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 02:09:27,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 02:09:27,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 02:09:27,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 02:09:27,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2023-08-29 02:09:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 02:09:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-29 02:09:27,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:27,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-29 02:09:28,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:09:28,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:09:28,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-29 02:09:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:09:40,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:09:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805934116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:09:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:09:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 32 [2023-08-29 02:09:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486758603] [2023-08-29 02:09:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:09:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 02:09:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:09:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 02:09:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=883, Unknown=5, NotChecked=0, Total=1056 [2023-08-29 02:09:42,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:44,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:46,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:48,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:50,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:52,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:54,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:09:54,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 176 [2023-08-29 02:09:54,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 373 transitions, 5264 flow. Second operand has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:09:54,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:09:54,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 176 [2023-08-29 02:09:54,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:09:58,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:00,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:02,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:04,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:09,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:13,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:15,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:10:16,242 INFO L130 PetriNetUnfolder]: 1003/2273 cut-off events. [2023-08-29 02:10:16,243 INFO L131 PetriNetUnfolder]: For 22333/22391 co-relation queries the response was YES. [2023-08-29 02:10:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14622 conditions, 2273 events. 1003/2273 cut-off events. For 22333/22391 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 15318 event pairs, 155 based on Foata normal form. 53/2326 useless extension candidates. Maximal degree in co-relation 14519. Up to 925 conditions per place. [2023-08-29 02:10:16,270 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 481 selfloop transitions, 96 changer transitions 32/620 dead transitions. [2023-08-29 02:10:16,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 620 transitions, 9184 flow [2023-08-29 02:10:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:10:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:10:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 916 transitions. [2023-08-29 02:10:16,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337121212121212 [2023-08-29 02:10:16,275 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 916 transitions. [2023-08-29 02:10:16,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 916 transitions. [2023-08-29 02:10:16,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:10:16,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 916 transitions. [2023-08-29 02:10:16,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.33333333333333) internal successors, (916), 12 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:16,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:10:16,282 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:10:16,282 INFO L175 Difference]: Start difference. First operand has 166 places, 373 transitions, 5264 flow. Second operand 12 states and 916 transitions. [2023-08-29 02:10:16,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 620 transitions, 9184 flow [2023-08-29 02:10:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 620 transitions, 9126 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 02:10:16,373 INFO L231 Difference]: Finished difference. Result has 181 places, 425 transitions, 6449 flow [2023-08-29 02:10:16,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5220, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6449, PETRI_PLACES=181, PETRI_TRANSITIONS=425} [2023-08-29 02:10:16,375 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 141 predicate places. [2023-08-29 02:10:16,375 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 425 transitions, 6449 flow [2023-08-29 02:10:16,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.58333333333333) internal successors, (775), 12 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:16,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:10:16,375 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:10:16,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 02:10:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 02:10:16,580 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:10:16,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:10:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1787307839, now seen corresponding path program 4 times [2023-08-29 02:10:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:10:16,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580117389] [2023-08-29 02:10:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:10:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:10:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:10:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:10:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:10:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580117389] [2023-08-29 02:10:17,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580117389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:10:17,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:10:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-29 02:10:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372545200] [2023-08-29 02:10:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:10:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 02:10:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:10:17,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 02:10:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-29 02:10:17,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 176 [2023-08-29 02:10:17,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 425 transitions, 6449 flow. Second operand has 11 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:17,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:10:17,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 176 [2023-08-29 02:10:17,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:10:19,060 INFO L130 PetriNetUnfolder]: 934/2244 cut-off events. [2023-08-29 02:10:19,060 INFO L131 PetriNetUnfolder]: For 26705/26793 co-relation queries the response was YES. [2023-08-29 02:10:19,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 2244 events. 934/2244 cut-off events. For 26705/26793 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15969 event pairs, 115 based on Foata normal form. 32/2270 useless extension candidates. Maximal degree in co-relation 15073. Up to 1336 conditions per place. [2023-08-29 02:10:19,079 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 345 selfloop transitions, 182 changer transitions 23/579 dead transitions. [2023-08-29 02:10:19,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 579 transitions, 9638 flow [2023-08-29 02:10:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:10:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:10:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 976 transitions. [2023-08-29 02:10:19,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2023-08-29 02:10:19,083 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 976 transitions. [2023-08-29 02:10:19,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 976 transitions. [2023-08-29 02:10:19,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:10:19,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 976 transitions. [2023-08-29 02:10:19,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 81.33333333333333) internal successors, (976), 12 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:19,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:10:19,088 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:10:19,089 INFO L175 Difference]: Start difference. First operand has 181 places, 425 transitions, 6449 flow. Second operand 12 states and 976 transitions. [2023-08-29 02:10:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 579 transitions, 9638 flow [2023-08-29 02:10:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 579 transitions, 9504 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-29 02:10:19,195 INFO L231 Difference]: Finished difference. Result has 198 places, 474 transitions, 8018 flow [2023-08-29 02:10:19,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8018, PETRI_PLACES=198, PETRI_TRANSITIONS=474} [2023-08-29 02:10:19,197 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2023-08-29 02:10:19,197 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 474 transitions, 8018 flow [2023-08-29 02:10:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.63636363636364) internal successors, (788), 11 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:19,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:10:19,198 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:10:19,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:10:19,198 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:10:19,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:10:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -901787285, now seen corresponding path program 1 times [2023-08-29 02:10:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:10:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543011069] [2023-08-29 02:10:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:10:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:10:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:10:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:10:21,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:10:21,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543011069] [2023-08-29 02:10:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543011069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:10:21,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247762319] [2023-08-29 02:10:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:10:21,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:10:21,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:10:21,587 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) [2023-08-29 02:10:21,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 02:10:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:10:21,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 02:10:21,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:10:21,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:10:21,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 02:10:21,815 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:10:21,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:10:21,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 02:10:21,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 02:10:21,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 02:10:22,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:22,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:10:22,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 73 [2023-08-29 02:10:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-29 02:10:22,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:10:22,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-08-29 02:10:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:10:22,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247762319] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 02:10:22,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 02:10:22,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 12] total 37 [2023-08-29 02:10:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446613814] [2023-08-29 02:10:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:10:22,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:10:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:10:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:10:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2023-08-29 02:10:24,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 02:10:24,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 474 transitions, 8018 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:24,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:10:24,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 02:10:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:10:27,567 INFO L130 PetriNetUnfolder]: 998/2376 cut-off events. [2023-08-29 02:10:27,567 INFO L131 PetriNetUnfolder]: For 34008/34033 co-relation queries the response was YES. [2023-08-29 02:10:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17091 conditions, 2376 events. 998/2376 cut-off events. For 34008/34033 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16767 event pairs, 160 based on Foata normal form. 4/2377 useless extension candidates. Maximal degree in co-relation 16974. Up to 1436 conditions per place. [2023-08-29 02:10:27,592 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 297 selfloop transitions, 218 changer transitions 53/590 dead transitions. [2023-08-29 02:10:27,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 590 transitions, 10553 flow [2023-08-29 02:10:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 02:10:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 02:10:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 786 transitions. [2023-08-29 02:10:27,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465909090909091 [2023-08-29 02:10:27,595 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 786 transitions. [2023-08-29 02:10:27,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 786 transitions. [2023-08-29 02:10:27,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:10:27,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 786 transitions. [2023-08-29 02:10:27,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:27,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:27,600 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:27,600 INFO L175 Difference]: Start difference. First operand has 198 places, 474 transitions, 8018 flow. Second operand 10 states and 786 transitions. [2023-08-29 02:10:27,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 590 transitions, 10553 flow [2023-08-29 02:10:27,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 590 transitions, 10442 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-29 02:10:27,762 INFO L231 Difference]: Finished difference. Result has 210 places, 501 transitions, 8952 flow [2023-08-29 02:10:27,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8952, PETRI_PLACES=210, PETRI_TRANSITIONS=501} [2023-08-29 02:10:27,763 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2023-08-29 02:10:27,763 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 501 transitions, 8952 flow [2023-08-29 02:10:27,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:27,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:10:27,764 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:10:27,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 02:10:27,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:10:27,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:10:27,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:10:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1438170653, now seen corresponding path program 5 times [2023-08-29 02:10:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:10:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805581487] [2023-08-29 02:10:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:10:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:10:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:10:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:10:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:10:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805581487] [2023-08-29 02:10:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805581487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:10:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671234769] [2023-08-29 02:10:31,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 02:10:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:10:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:10:31,826 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) [2023-08-29 02:10:31,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 02:10:31,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-29 02:10:31,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:10:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-29 02:10:31,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:10:32,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:10:32,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 02:10:32,142 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:10:32,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:10:32,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 02:10:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-08-29 02:10:32,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 02:10:32,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2023-08-29 02:10:32,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 69 [2023-08-29 02:10:32,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 81 [2023-08-29 02:10:32,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 93 [2023-08-29 02:10:32,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:10:32,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:10:32,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 86 treesize of output 103 [2023-08-29 02:10:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-29 02:10:42,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:10:48,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2023-08-29 02:10:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:10:48,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671234769] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 02:10:48,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 02:10:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21, 13] total 43 [2023-08-29 02:10:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719265085] [2023-08-29 02:10:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:10:48,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 02:10:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:10:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 02:10:48,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1634, Unknown=4, NotChecked=0, Total=1892 [2023-08-29 02:10:56,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 176 [2023-08-29 02:10:56,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 501 transitions, 8952 flow. Second operand has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:10:56,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:10:56,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 176 [2023-08-29 02:10:56,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:11:24,711 INFO L130 PetriNetUnfolder]: 1032/2511 cut-off events. [2023-08-29 02:11:24,711 INFO L131 PetriNetUnfolder]: For 44948/45079 co-relation queries the response was YES. [2023-08-29 02:11:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19176 conditions, 2511 events. 1032/2511 cut-off events. For 44948/45079 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18595 event pairs, 130 based on Foata normal form. 69/2580 useless extension candidates. Maximal degree in co-relation 19053. Up to 1330 conditions per place. [2023-08-29 02:11:24,743 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 431 selfloop transitions, 264 changer transitions 19/732 dead transitions. [2023-08-29 02:11:24,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 732 transitions, 14008 flow [2023-08-29 02:11:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 02:11:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 02:11:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1275 transitions. [2023-08-29 02:11:24,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45276988636363635 [2023-08-29 02:11:24,746 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1275 transitions. [2023-08-29 02:11:24,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1275 transitions. [2023-08-29 02:11:24,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:11:24,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1275 transitions. [2023-08-29 02:11:24,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.6875) internal successors, (1275), 16 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:11:24,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:11:24,753 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:11:24,753 INFO L175 Difference]: Start difference. First operand has 210 places, 501 transitions, 8952 flow. Second operand 16 states and 1275 transitions. [2023-08-29 02:11:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 732 transitions, 14008 flow [2023-08-29 02:11:24,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 732 transitions, 13923 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-29 02:11:24,983 INFO L231 Difference]: Finished difference. Result has 236 places, 599 transitions, 11886 flow [2023-08-29 02:11:24,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=8876, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11886, PETRI_PLACES=236, PETRI_TRANSITIONS=599} [2023-08-29 02:11:24,984 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2023-08-29 02:11:24,984 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 599 transitions, 11886 flow [2023-08-29 02:11:24,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:11:24,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:11:24,985 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:11:24,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 02:11:25,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:11:25,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:11:25,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:11:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1734332913, now seen corresponding path program 3 times [2023-08-29 02:11:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:11:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309803783] [2023-08-29 02:11:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:11:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:11:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:11:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:11:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:11:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309803783] [2023-08-29 02:11:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309803783] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:11:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267912122] [2023-08-29 02:11:52,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 02:11:52,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:11:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:11:52,665 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) [2023-08-29 02:11:52,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 02:11:52,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 02:11:52,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:11:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 02:11:52,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:11:52,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 02:11:52,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:11:52,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-29 02:11:52,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-29 02:11:53,018 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-08-29 02:11:53,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-08-29 02:11:53,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-29 02:11:53,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2023-08-29 02:11:53,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:11:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:11:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2023-08-29 02:11:53,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:11:53,508 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:11:53,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 98 [2023-08-29 02:11:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:11:59,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:11:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267912122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:11:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:11:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21] total 31 [2023-08-29 02:11:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192698902] [2023-08-29 02:11:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:11:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 02:11:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:11:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 02:11:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=835, Unknown=2, NotChecked=0, Total=992 [2023-08-29 02:12:01,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:03,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:05,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:07,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:09,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:11,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:13,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:15,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:17,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:20,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:22,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:22,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 176 [2023-08-29 02:12:22,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 599 transitions, 11886 flow. Second operand has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:22,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:12:22,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 176 [2023-08-29 02:12:22,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:12:26,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:28,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:30,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:32,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:36,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:38,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:40,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:42,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:44,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:47,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 02:12:47,331 INFO L130 PetriNetUnfolder]: 1252/2878 cut-off events. [2023-08-29 02:12:47,332 INFO L131 PetriNetUnfolder]: For 64504/64661 co-relation queries the response was YES. [2023-08-29 02:12:47,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23532 conditions, 2878 events. 1252/2878 cut-off events. For 64504/64661 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21270 event pairs, 118 based on Foata normal form. 90/2966 useless extension candidates. Maximal degree in co-relation 23396. Up to 1397 conditions per place. [2023-08-29 02:12:47,361 INFO L137 encePairwiseOnDemand]: 157/176 looper letters, 496 selfloop transitions, 260 changer transitions 25/837 dead transitions. [2023-08-29 02:12:47,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 837 transitions, 17395 flow [2023-08-29 02:12:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:12:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:12:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 874 transitions. [2023-08-29 02:12:47,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41382575757575757 [2023-08-29 02:12:47,363 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 874 transitions. [2023-08-29 02:12:47,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 874 transitions. [2023-08-29 02:12:47,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:12:47,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 874 transitions. [2023-08-29 02:12:47,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.83333333333333) internal successors, (874), 12 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:47,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:12:47,368 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:12:47,368 INFO L175 Difference]: Start difference. First operand has 236 places, 599 transitions, 11886 flow. Second operand 12 states and 874 transitions. [2023-08-29 02:12:47,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 837 transitions, 17395 flow [2023-08-29 02:12:47,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 837 transitions, 16859 flow, removed 132 selfloop flow, removed 1 redundant places. [2023-08-29 02:12:47,669 INFO L231 Difference]: Finished difference. Result has 252 places, 676 transitions, 14077 flow [2023-08-29 02:12:47,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=11480, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14077, PETRI_PLACES=252, PETRI_TRANSITIONS=676} [2023-08-29 02:12:47,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2023-08-29 02:12:47,670 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 676 transitions, 14077 flow [2023-08-29 02:12:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:12:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:12:47,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 02:12:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 02:12:47,876 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:12:47,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:12:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 453506027, now seen corresponding path program 2 times [2023-08-29 02:12:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:12:47,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213851026] [2023-08-29 02:12:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:12:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:12:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:12:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:12:49,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:12:49,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213851026] [2023-08-29 02:12:49,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213851026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:12:49,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469424769] [2023-08-29 02:12:49,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 02:12:49,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:12:49,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:12:49,441 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) [2023-08-29 02:12:49,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 02:12:49,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 02:12:49,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 02:12:49,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-29 02:12:49,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:12:49,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:12:49,581 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:12:49,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:12:49,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 02:12:49,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-29 02:12:49,639 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 02:12:49,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:12:49,647 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 02:12:49,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:12:49,661 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 02:12:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:12:49,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:12:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469424769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:12:49,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:12:49,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 21 [2023-08-29 02:12:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103240101] [2023-08-29 02:12:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:12:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:12:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:12:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:12:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-29 02:12:49,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 02:12:49,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 676 transitions, 14077 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:49,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:12:49,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 02:12:49,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:12:51,001 INFO L130 PetriNetUnfolder]: 1197/2874 cut-off events. [2023-08-29 02:12:51,001 INFO L131 PetriNetUnfolder]: For 70905/70946 co-relation queries the response was YES. [2023-08-29 02:12:51,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24180 conditions, 2874 events. 1197/2874 cut-off events. For 70905/70946 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21620 event pairs, 189 based on Foata normal form. 12/2875 useless extension candidates. Maximal degree in co-relation 24036. Up to 1021 conditions per place. [2023-08-29 02:12:51,029 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 444 selfloop transitions, 339 changer transitions 21/831 dead transitions. [2023-08-29 02:12:51,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 831 transitions, 17298 flow [2023-08-29 02:12:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 02:12:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 02:12:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1071 transitions. [2023-08-29 02:12:51,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46809440559440557 [2023-08-29 02:12:51,032 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1071 transitions. [2023-08-29 02:12:51,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1071 transitions. [2023-08-29 02:12:51,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:12:51,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1071 transitions. [2023-08-29 02:12:51,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 82.38461538461539) internal successors, (1071), 13 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:51,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 176.0) internal successors, (2464), 14 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:51,037 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 176.0) internal successors, (2464), 14 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:51,037 INFO L175 Difference]: Start difference. First operand has 252 places, 676 transitions, 14077 flow. Second operand 13 states and 1071 transitions. [2023-08-29 02:12:51,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 831 transitions, 17298 flow [2023-08-29 02:12:51,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 831 transitions, 17183 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-29 02:12:51,279 INFO L231 Difference]: Finished difference. Result has 265 places, 717 transitions, 15368 flow [2023-08-29 02:12:51,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=13977, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15368, PETRI_PLACES=265, PETRI_TRANSITIONS=717} [2023-08-29 02:12:51,280 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2023-08-29 02:12:51,280 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 717 transitions, 15368 flow [2023-08-29 02:12:51,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:51,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:12:51,281 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:12:51,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 02:12:51,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-29 02:12:51,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:12:51,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:12:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 371753447, now seen corresponding path program 3 times [2023-08-29 02:12:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:12:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518179540] [2023-08-29 02:12:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:12:51,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:12:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:12:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:12:51,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:12:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518179540] [2023-08-29 02:12:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518179540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:12:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:12:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 02:12:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950285211] [2023-08-29 02:12:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:12:51,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:12:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:12:51,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:12:51,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-29 02:12:52,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 02:12:52,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 717 transitions, 15368 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:52,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:12:52,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 02:12:52,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:12:53,492 INFO L130 PetriNetUnfolder]: 1192/2864 cut-off events. [2023-08-29 02:12:53,492 INFO L131 PetriNetUnfolder]: For 78878/78919 co-relation queries the response was YES. [2023-08-29 02:12:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25048 conditions, 2864 events. 1192/2864 cut-off events. For 78878/78919 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21540 event pairs, 225 based on Foata normal form. 11/2867 useless extension candidates. Maximal degree in co-relation 24901. Up to 1055 conditions per place. [2023-08-29 02:12:53,523 INFO L137 encePairwiseOnDemand]: 160/176 looper letters, 592 selfloop transitions, 194 changer transitions 20/833 dead transitions. [2023-08-29 02:12:53,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 833 transitions, 18286 flow [2023-08-29 02:12:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 02:12:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 02:12:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 820 transitions. [2023-08-29 02:12:53,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2023-08-29 02:12:53,525 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 820 transitions. [2023-08-29 02:12:53,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 820 transitions. [2023-08-29 02:12:53,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:12:53,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 820 transitions. [2023-08-29 02:12:53,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:53,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:53,529 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 176.0) internal successors, (1936), 11 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:53,529 INFO L175 Difference]: Start difference. First operand has 265 places, 717 transitions, 15368 flow. Second operand 10 states and 820 transitions. [2023-08-29 02:12:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 833 transitions, 18286 flow [2023-08-29 02:12:53,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 833 transitions, 18105 flow, removed 82 selfloop flow, removed 1 redundant places. [2023-08-29 02:12:53,822 INFO L231 Difference]: Finished difference. Result has 277 places, 733 transitions, 15946 flow [2023-08-29 02:12:53,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=15231, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15946, PETRI_PLACES=277, PETRI_TRANSITIONS=733} [2023-08-29 02:12:53,822 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2023-08-29 02:12:53,823 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 733 transitions, 15946 flow [2023-08-29 02:12:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:12:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:12:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:12:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:12:53,823 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:12:53,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:12:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1297343898, now seen corresponding path program 1 times [2023-08-29 02:12:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:12:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664803079] [2023-08-29 02:12:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:12:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:12:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:15:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:15:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:15:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664803079] [2023-08-29 02:15:30,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664803079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:15:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317997522] [2023-08-29 02:15:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:15:30,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:15:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:15:30,599 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) [2023-08-29 02:15:30,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 02:15:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:15:30,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-29 02:15:30,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:15:30,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 02:15:30,899 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-08-29 02:15:30,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 15 [2023-08-29 02:15:30,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:15:31,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-29 02:15:31,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-29 02:15:31,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-29 02:15:31,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:15:31,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 02:15:31,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 63 [2023-08-29 02:15:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 02:15:31,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:15:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:15:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317997522] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 02:15:32,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 02:15:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 16] total 40 [2023-08-29 02:15:32,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299583450] [2023-08-29 02:15:32,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:15:32,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:15:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:15:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:15:32,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-08-29 02:15:33,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 02:15:33,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 733 transitions, 15946 flow. Second operand has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:33,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:15:33,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 02:15:33,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:15:36,186 INFO L130 PetriNetUnfolder]: 1230/2922 cut-off events. [2023-08-29 02:15:36,186 INFO L131 PetriNetUnfolder]: For 84634/84690 co-relation queries the response was YES. [2023-08-29 02:15:36,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26227 conditions, 2922 events. 1230/2922 cut-off events. For 84634/84690 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21764 event pairs, 277 based on Foata normal form. 9/2929 useless extension candidates. Maximal degree in co-relation 26076. Up to 1093 conditions per place. [2023-08-29 02:15:36,225 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 663 selfloop transitions, 183 changer transitions 39/889 dead transitions. [2023-08-29 02:15:36,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 889 transitions, 19922 flow [2023-08-29 02:15:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 02:15:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 02:15:36,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1176 transitions. [2023-08-29 02:15:36,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2023-08-29 02:15:36,228 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1176 transitions. [2023-08-29 02:15:36,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1176 transitions. [2023-08-29 02:15:36,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:15:36,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1176 transitions. [2023-08-29 02:15:36,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.4) internal successors, (1176), 15 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:36,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 176.0) internal successors, (2816), 16 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:36,233 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 176.0) internal successors, (2816), 16 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:36,233 INFO L175 Difference]: Start difference. First operand has 277 places, 733 transitions, 15946 flow. Second operand 15 states and 1176 transitions. [2023-08-29 02:15:36,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 889 transitions, 19922 flow [2023-08-29 02:15:36,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 889 transitions, 19706 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-29 02:15:36,589 INFO L231 Difference]: Finished difference. Result has 299 places, 775 transitions, 16889 flow [2023-08-29 02:15:36,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=15749, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16889, PETRI_PLACES=299, PETRI_TRANSITIONS=775} [2023-08-29 02:15:36,590 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2023-08-29 02:15:36,590 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 775 transitions, 16889 flow [2023-08-29 02:15:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.22222222222223) internal successors, (632), 9 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:36,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:15:36,591 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:15:36,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 02:15:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:15:36,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:15:36,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:15:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1960644907, now seen corresponding path program 6 times [2023-08-29 02:15:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:15:36,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733428699] [2023-08-29 02:15:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:15:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:15:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:15:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:15:37,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:15:37,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733428699] [2023-08-29 02:15:37,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733428699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:15:37,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:15:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 02:15:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218129951] [2023-08-29 02:15:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:15:37,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 02:15:37,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:15:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 02:15:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 02:15:38,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 176 [2023-08-29 02:15:38,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 775 transitions, 16889 flow. Second operand has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:38,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:15:38,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 176 [2023-08-29 02:15:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:15:39,425 INFO L130 PetriNetUnfolder]: 1143/2788 cut-off events. [2023-08-29 02:15:39,425 INFO L131 PetriNetUnfolder]: For 87207/87350 co-relation queries the response was YES. [2023-08-29 02:15:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26010 conditions, 2788 events. 1143/2788 cut-off events. For 87207/87350 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21484 event pairs, 145 based on Foata normal form. 55/2834 useless extension candidates. Maximal degree in co-relation 25850. Up to 1644 conditions per place. [2023-08-29 02:15:39,462 INFO L137 encePairwiseOnDemand]: 161/176 looper letters, 546 selfloop transitions, 298 changer transitions 19/932 dead transitions. [2023-08-29 02:15:39,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 932 transitions, 21571 flow [2023-08-29 02:15:39,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 02:15:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 02:15:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 992 transitions. [2023-08-29 02:15:39,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-29 02:15:39,464 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 992 transitions. [2023-08-29 02:15:39,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 992 transitions. [2023-08-29 02:15:39,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:15:39,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 992 transitions. [2023-08-29 02:15:39,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 82.66666666666667) internal successors, (992), 12 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:39,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:15:39,468 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 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) [2023-08-29 02:15:39,468 INFO L175 Difference]: Start difference. First operand has 299 places, 775 transitions, 16889 flow. Second operand 12 states and 992 transitions. [2023-08-29 02:15:39,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 932 transitions, 21571 flow [2023-08-29 02:15:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 932 transitions, 21486 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-29 02:15:39,865 INFO L231 Difference]: Finished difference. Result has 308 places, 828 transitions, 19548 flow [2023-08-29 02:15:39,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=16822, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19548, PETRI_PLACES=308, PETRI_TRANSITIONS=828} [2023-08-29 02:15:39,866 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2023-08-29 02:15:39,866 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 828 transitions, 19548 flow [2023-08-29 02:15:39,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.7) internal successors, (737), 10 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:39,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:15:39,866 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:15:39,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:15:39,866 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:15:39,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:15:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1412033899, now seen corresponding path program 4 times [2023-08-29 02:15:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:15:39,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597638064] [2023-08-29 02:15:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:15:39,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:15:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:15:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 02:15:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:15:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597638064] [2023-08-29 02:15:40,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597638064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:15:40,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:15:40,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 02:15:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062975007] [2023-08-29 02:15:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:15:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 02:15:40,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:15:40,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 02:15:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 02:15:40,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2023-08-29 02:15:40,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 828 transitions, 19548 flow. Second operand has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:40,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:15:40,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2023-08-29 02:15:40,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:15:41,827 INFO L130 PetriNetUnfolder]: 1210/2922 cut-off events. [2023-08-29 02:15:41,827 INFO L131 PetriNetUnfolder]: For 105204/105267 co-relation queries the response was YES. [2023-08-29 02:15:41,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28434 conditions, 2922 events. 1210/2922 cut-off events. For 105204/105267 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22254 event pairs, 206 based on Foata normal form. 13/2923 useless extension candidates. Maximal degree in co-relation 28270. Up to 1787 conditions per place. [2023-08-29 02:15:41,869 INFO L137 encePairwiseOnDemand]: 158/176 looper letters, 486 selfloop transitions, 354 changer transitions 17/884 dead transitions. [2023-08-29 02:15:41,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 884 transitions, 21919 flow [2023-08-29 02:15:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 02:15:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 02:15:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2023-08-29 02:15:41,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2023-08-29 02:15:41,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 723 transitions. [2023-08-29 02:15:41,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 723 transitions. [2023-08-29 02:15:41,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:15:41,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 723 transitions. [2023-08-29 02:15:41,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:41,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:41,873 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:41,873 INFO L175 Difference]: Start difference. First operand has 308 places, 828 transitions, 19548 flow. Second operand 9 states and 723 transitions. [2023-08-29 02:15:41,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 884 transitions, 21919 flow [2023-08-29 02:15:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 884 transitions, 21742 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-29 02:15:42,338 INFO L231 Difference]: Finished difference. Result has 316 places, 835 transitions, 20391 flow [2023-08-29 02:15:42,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=19386, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20391, PETRI_PLACES=316, PETRI_TRANSITIONS=835} [2023-08-29 02:15:42,340 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 276 predicate places. [2023-08-29 02:15:42,340 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 835 transitions, 20391 flow [2023-08-29 02:15:42,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.11111111111111) internal successors, (631), 9 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:15:42,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:15:42,340 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:15:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:15:42,341 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 02:15:42,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:15:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1597550675, now seen corresponding path program 4 times [2023-08-29 02:15:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:15:42,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766699221] [2023-08-29 02:15:42,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:15:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:15:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat