./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:51:15,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:51:15,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:51:15,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:51:15,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:51:15,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:51:15,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:51:15,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:51:15,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:51:15,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:51:15,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:51:15,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:51:15,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:51:15,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:51:16,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:51:16,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:51:16,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:51:16,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:51:16,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:51:16,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:51:16,005 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:51:16,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:51:16,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:51:16,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:51:16,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:51:16,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:51:16,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:51:16,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:51:16,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:51:16,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:51:16,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:51:16,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:51:16,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:51:16,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:51:16,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:51:16,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:51:16,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:51:16,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:51:16,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:51:16,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:51:16,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:51:16,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:51:16,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:51:16,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:51:16,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:51:16,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:51:16,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:51:16,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:51:16,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:51:16,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:51:16,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:51:16,047 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:51:16,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:51:16,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:51:16,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:51:16,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:51:16,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:51:16,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:51:16,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:51:16,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:51:16,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:51:16,049 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:51:16,050 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:51:16,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:51:16,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:51:16,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:51:16,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:51:16,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:51:16,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:51:16,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:16,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:51:16,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:51:16,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:51:16,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:51:16,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:51:16,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:51:16,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:51:16,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:51:16,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b86d528cae3f36fe49030118864df9a90bfa303271cb05b13ff89a15d513aa [2022-04-18 15:51:16,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:51:16,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:51:16,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:51:16,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:51:16,270 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:51:16,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2022-04-18 15:51:16,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bebdd51b/e950a0e4f9d9450c81b214e37d1ae781/FLAG1b5d0653c [2022-04-18 15:51:16,728 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:51:16,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2022-04-18 15:51:16,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bebdd51b/e950a0e4f9d9450c81b214e37d1ae781/FLAG1b5d0653c [2022-04-18 15:51:17,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bebdd51b/e950a0e4f9d9450c81b214e37d1ae781 [2022-04-18 15:51:17,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:51:17,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:51:17,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:17,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:51:17,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:51:17,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1792c26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17, skipping insertion in model container [2022-04-18 15:51:17,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:51:17,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:51:17,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-04-18 15:51:17,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:17,521 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:51:17,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i[47038,47051] [2022-04-18 15:51:17,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:17,622 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:51:17,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17 WrapperNode [2022-04-18 15:51:17,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:17,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:17,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:51:17,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:51:17,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,717 INFO L137 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 337 [2022-04-18 15:51:17,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:17,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:51:17,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:51:17,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:51:17,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:51:17,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:51:17,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:51:17,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:51:17,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (1/1) ... [2022-04-18 15:51:17,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:17,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:17,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:51:17,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:51:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:51:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 15:51:17,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 15:51:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 15:51:17,983 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:51:17,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:51:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 15:51:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:51:17,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:51:17,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:51:17,985 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:51:18,112 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:51:18,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:51:18,585 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:51:18,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:51:18,598 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 15:51:18,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:18 BoogieIcfgContainer [2022-04-18 15:51:18,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:51:18,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:51:18,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:51:18,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:51:18,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:51:17" (1/3) ... [2022-04-18 15:51:18,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d797324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:18, skipping insertion in model container [2022-04-18 15:51:18,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:17" (2/3) ... [2022-04-18 15:51:18,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d797324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:18, skipping insertion in model container [2022-04-18 15:51:18,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:18" (3/3) ... [2022-04-18 15:51:18,606 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2022-04-18 15:51:18,610 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:51:18,610 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:51:18,611 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-04-18 15:51:18,611 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:51:18,690 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:51:18,734 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:51:18,740 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:51:18,741 INFO L341 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-04-18 15:51:18,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 349 places, 369 transitions, 760 flow [2022-04-18 15:51:18,952 INFO L129 PetriNetUnfolder]: 54/658 cut-off events. [2022-04-18 15:51:18,953 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-04-18 15:51:18,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 658 events. 54/658 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3051 event pairs, 0 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 329. Up to 8 conditions per place. [2022-04-18 15:51:18,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 369 transitions, 760 flow [2022-04-18 15:51:18,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 369 transitions, 760 flow [2022-04-18 15:51:18,990 INFO L129 PetriNetUnfolder]: 6/111 cut-off events. [2022-04-18 15:51:18,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:51:18,991 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:18,992 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:18,992 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 15:51:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash -976764291, now seen corresponding path program 1 times [2022-04-18 15:51:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:19,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492134775] [2022-04-18 15:51:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:19,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:19,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:19,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492134775] [2022-04-18 15:51:19,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492134775] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:19,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:19,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:51:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955231800] [2022-04-18 15:51:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:19,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:51:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:51:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:51:19,219 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 345 out of 369 [2022-04-18 15:51:19,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 369 transitions, 760 flow. Second operand has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:19,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 345 of 369 [2022-04-18 15:51:19,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:19,356 INFO L129 PetriNetUnfolder]: 15/617 cut-off events. [2022-04-18 15:51:19,357 INFO L130 PetriNetUnfolder]: For 39/53 co-relation queries the response was YES. [2022-04-18 15:51:19,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 617 events. 15/617 cut-off events. For 39/53 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2646 event pairs, 0 based on Foata normal form. 62/621 useless extension candidates. Maximal degree in co-relation 312. Up to 12 conditions per place. [2022-04-18 15:51:19,363 INFO L132 encePairwiseOnDemand]: 352/369 looper letters, 6 selfloop transitions, 0 changer transitions 0/351 dead transitions. [2022-04-18 15:51:19,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 351 transitions, 736 flow [2022-04-18 15:51:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:51:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:51:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 713 transitions. [2022-04-18 15:51:19,380 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9661246612466124 [2022-04-18 15:51:19,381 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 713 transitions. [2022-04-18 15:51:19,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 713 transitions. [2022-04-18 15:51:19,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:19,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 713 transitions. [2022-04-18 15:51:19,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.5) internal successors, (713), 2 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,398 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,399 INFO L186 Difference]: Start difference. First operand has 349 places, 369 transitions, 760 flow. Second operand 2 states and 713 transitions. [2022-04-18 15:51:19,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 351 transitions, 736 flow [2022-04-18 15:51:19,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 351 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:19,412 INFO L242 Difference]: Finished difference. Result has 349 places, 351 transitions, 724 flow [2022-04-18 15:51:19,414 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=724, PETRI_PLACES=349, PETRI_TRANSITIONS=351} [2022-04-18 15:51:19,417 INFO L335 CegarLoopForPetriNet]: 349 programPoint places, 0 predicate places. [2022-04-18 15:51:19,417 INFO L478 AbstractCegarLoop]: Abstraction has has 349 places, 351 transitions, 724 flow [2022-04-18 15:51:19,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:19,419 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:19,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:51:19,419 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 15:51:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1639831261, now seen corresponding path program 1 times [2022-04-18 15:51:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:19,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530327875] [2022-04-18 15:51:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:19,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530327875] [2022-04-18 15:51:19,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530327875] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:19,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:19,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:51:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674866054] [2022-04-18 15:51:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:19,525 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:19,527 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 369 [2022-04-18 15:51:19,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 351 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:19,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 369 [2022-04-18 15:51:19,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:19,648 INFO L129 PetriNetUnfolder]: 15/656 cut-off events. [2022-04-18 15:51:19,649 INFO L130 PetriNetUnfolder]: For 39/53 co-relation queries the response was YES. [2022-04-18 15:51:19,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 656 events. 15/656 cut-off events. For 39/53 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2643 event pairs, 0 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 709. Up to 26 conditions per place. [2022-04-18 15:51:19,656 INFO L132 encePairwiseOnDemand]: 366/369 looper letters, 29 selfloop transitions, 2 changer transitions 0/362 dead transitions. [2022-04-18 15:51:19,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 362 transitions, 808 flow [2022-04-18 15:51:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2022-04-18 15:51:19,659 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2022-04-18 15:51:19,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2022-04-18 15:51:19,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2022-04-18 15:51:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2022-04-18 15:51:19,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 369.0) internal successors, (1476), 4 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,664 INFO L186 Difference]: Start difference. First operand has 349 places, 351 transitions, 724 flow. Second operand 3 states and 1025 transitions. [2022-04-18 15:51:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 362 transitions, 808 flow [2022-04-18 15:51:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 362 transitions, 808 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:19,672 INFO L242 Difference]: Finished difference. Result has 352 places, 352 transitions, 736 flow [2022-04-18 15:51:19,673 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=736, PETRI_PLACES=352, PETRI_TRANSITIONS=352} [2022-04-18 15:51:19,673 INFO L335 CegarLoopForPetriNet]: 349 programPoint places, 3 predicate places. [2022-04-18 15:51:19,674 INFO L478 AbstractCegarLoop]: Abstraction has has 352 places, 352 transitions, 736 flow [2022-04-18 15:51:19,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:19,674 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:19,674 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:51:19,675 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 15:51:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -80309087, now seen corresponding path program 1 times [2022-04-18 15:51:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36550265] [2022-04-18 15:51:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:19,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:19,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36550265] [2022-04-18 15:51:19,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36550265] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:19,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:19,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:19,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414784846] [2022-04-18 15:51:19,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:19,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:19,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:19,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:19,841 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 369 [2022-04-18 15:51:19,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 352 transitions, 736 flow. Second operand has 6 states, 6 states have (on average 226.5) internal successors, (1359), 6 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:19,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:19,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 369 [2022-04-18 15:51:19,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:32,194 INFO L129 PetriNetUnfolder]: 46723/103586 cut-off events. [2022-04-18 15:51:32,194 INFO L130 PetriNetUnfolder]: For 634/634 co-relation queries the response was YES. [2022-04-18 15:51:32,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174852 conditions, 103586 events. 46723/103586 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 1616. Compared 1131817 event pairs, 45420 based on Foata normal form. 0/89791 useless extension candidates. Maximal degree in co-relation 174845. Up to 70966 conditions per place. [2022-04-18 15:51:33,071 INFO L132 encePairwiseOnDemand]: 363/369 looper letters, 120 selfloop transitions, 5 changer transitions 0/351 dead transitions. [2022-04-18 15:51:33,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 351 transitions, 984 flow [2022-04-18 15:51:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:33,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1476 transitions. [2022-04-18 15:51:33,074 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-04-18 15:51:33,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1476 transitions. [2022-04-18 15:51:33,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1476 transitions. [2022-04-18 15:51:33,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:33,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1476 transitions. [2022-04-18 15:51:33,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,083 INFO L186 Difference]: Start difference. First operand has 352 places, 352 transitions, 736 flow. Second operand 6 states and 1476 transitions. [2022-04-18 15:51:33,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 351 transitions, 984 flow [2022-04-18 15:51:33,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 351 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:51:33,091 INFO L242 Difference]: Finished difference. Result has 355 places, 351 transitions, 742 flow [2022-04-18 15:51:33,092 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=355, PETRI_TRANSITIONS=351} [2022-04-18 15:51:33,093 INFO L335 CegarLoopForPetriNet]: 349 programPoint places, 6 predicate places. [2022-04-18 15:51:33,094 INFO L478 AbstractCegarLoop]: Abstraction has has 355 places, 351 transitions, 742 flow [2022-04-18 15:51:33,094 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.5) internal successors, (1359), 6 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,095 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:33,095 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:33,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:51:33,095 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 15:51:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1999875606, now seen corresponding path program 1 times [2022-04-18 15:51:33,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784373924] [2022-04-18 15:51:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:33,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784373924] [2022-04-18 15:51:33,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784373924] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:33,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:33,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:33,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441111826] [2022-04-18 15:51:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:33,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:33,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:33,229 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 369 [2022-04-18 15:51:33,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 351 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:33,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 369 [2022-04-18 15:51:33,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:44,329 INFO L129 PetriNetUnfolder]: 46723/103584 cut-off events. [2022-04-18 15:51:44,330 INFO L130 PetriNetUnfolder]: For 635/635 co-relation queries the response was YES. [2022-04-18 15:51:44,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174857 conditions, 103584 events. 46723/103584 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 1616. Compared 1131488 event pairs, 45420 based on Foata normal form. 0/89791 useless extension candidates. Maximal degree in co-relation 174850. Up to 70964 conditions per place. [2022-04-18 15:51:44,986 INFO L132 encePairwiseOnDemand]: 363/369 looper letters, 119 selfloop transitions, 5 changer transitions 0/350 dead transitions. [2022-04-18 15:51:44,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 350 transitions, 988 flow [2022-04-18 15:51:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:44,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2022-04-18 15:51:44,991 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6662149954832882 [2022-04-18 15:51:44,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2022-04-18 15:51:44,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2022-04-18 15:51:44,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2022-04-18 15:51:44,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:44,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:44,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 369.0) internal successors, (2583), 7 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:44,998 INFO L186 Difference]: Start difference. First operand has 355 places, 351 transitions, 742 flow. Second operand 6 states and 1475 transitions. [2022-04-18 15:51:44,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 350 transitions, 988 flow [2022-04-18 15:51:45,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 350 transitions, 978 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:45,005 INFO L242 Difference]: Finished difference. Result has 354 places, 350 transitions, 740 flow [2022-04-18 15:51:45,005 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=369, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=354, PETRI_TRANSITIONS=350} [2022-04-18 15:51:45,006 INFO L335 CegarLoopForPetriNet]: 349 programPoint places, 5 predicate places. [2022-04-18 15:51:45,006 INFO L478 AbstractCegarLoop]: Abstraction has has 354 places, 350 transitions, 740 flow [2022-04-18 15:51:45,007 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.5) internal successors, (1365), 6 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:45,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:45,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:45,008 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:51:45,008 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 15:51:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:45,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1086987458, now seen corresponding path program 1 times [2022-04-18 15:51:45,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:45,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281787354] [2022-04-18 15:51:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:45,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281787354] [2022-04-18 15:51:45,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281787354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:45,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437740781] [2022-04-18 15:51:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:45,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:45,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:45,121 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 369 [2022-04-18 15:51:45,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 350 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 220.83333333333334) internal successors, (1325), 6 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:45,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:45,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 369 [2022-04-18 15:51:45,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand