./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_86-lists_racing.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_86-lists_racing.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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:51:14,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:51:14,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:51:14,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:51:14,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:51:14,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:51:14,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:51:14,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:51:14,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:51:14,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:51:14,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:51:14,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:51:14,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:51:14,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:51:14,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:51:14,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:51:14,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:51:14,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:51:14,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:51:14,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:51:14,706 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:51:14,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:51:14,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:51:14,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:51:14,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:51:14,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:51:14,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:51:14,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:51:14,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:51:14,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:51:14,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:51:14,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:51:14,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:51:14,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:51:14,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:51:14,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:51:14,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:51:14,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:51:14,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:51:14,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:51:14,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:51:14,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:51:14,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:51:14,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:51:14,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:51:14,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:51:14,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:51:14,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:51:14,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:51:14,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:51:14,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:51:14,750 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:51:14,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:51:14,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:51:14,752 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:51:14,752 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:51:14,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:51:14,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:51:14,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:51:14,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:51:14,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:51:14,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:51:14,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:14,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:51:14,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:51:14,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:51:14,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:51:14,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:51:14,758 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:51:14,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:51:14,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:51:14,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2022-04-18 15:51:14,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:51:14,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:51:14,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:51:14,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:51:14,944 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:51:14,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2022-04-18 15:51:14,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ae9146f0/dc14ac381f4f49069cfa266a24554641/FLAGae480c392 [2022-04-18 15:51:15,450 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:51:15,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2022-04-18 15:51:15,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ae9146f0/dc14ac381f4f49069cfa266a24554641/FLAGae480c392 [2022-04-18 15:51:15,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ae9146f0/dc14ac381f4f49069cfa266a24554641 [2022-04-18 15:51:15,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:51:15,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:51:15,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:15,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:51:15,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:51:15,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:15" (1/1) ... [2022-04-18 15:51:15,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651212e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:15, skipping insertion in model container [2022-04-18 15:51:15,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:15" (1/1) ... [2022-04-18 15:51:15,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:51:15,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:51:15,797 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_86-lists_racing.i[47038,47051] [2022-04-18 15:51:15,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:15,897 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:51:15,939 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_86-lists_racing.i[47038,47051] [2022-04-18 15:51:15,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:16,042 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:51:16,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16 WrapperNode [2022-04-18 15:51:16,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:16,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:16,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:51:16,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:51:16,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,106 INFO L137 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 340 [2022-04-18 15:51:16,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:16,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:51:16,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:51:16,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:51:16,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:51:16,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:51:16,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:51:16,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:51:16,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (1/1) ... [2022-04-18 15:51:16,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:16,194 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 15:51:16,227 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 15:51:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 15:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 15:51:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 15:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:51:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 15:51:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 15:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:51:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 15:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:51:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:51:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:51:16,242 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 15:51:16,376 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:51:16,378 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:51:16,904 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:51:16,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:51:16,914 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 15:51:16,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:16 BoogieIcfgContainer [2022-04-18 15:51:16,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:51:16,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:51:16,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:51:16,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:51:16,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:51:15" (1/3) ... [2022-04-18 15:51:16,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd6db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:16, skipping insertion in model container [2022-04-18 15:51:16,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:16" (2/3) ... [2022-04-18 15:51:16,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd6db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:16, skipping insertion in model container [2022-04-18 15:51:16,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:16" (3/3) ... [2022-04-18 15:51:16,922 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2022-04-18 15:51:16,925 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:51:16,926 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:51:16,926 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-04-18 15:51:16,926 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:51:17,009 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:51:17,054 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:51:17,060 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 15:51:17,060 INFO L341 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-04-18 15:51:17,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 352 places, 372 transitions, 766 flow [2022-04-18 15:51:17,245 INFO L129 PetriNetUnfolder]: 54/664 cut-off events. [2022-04-18 15:51:17,246 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-04-18 15:51:17,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 664 events. 54/664 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3085 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-04-18 15:51:17,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 372 transitions, 766 flow [2022-04-18 15:51:17,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 372 transitions, 766 flow [2022-04-18 15:51:17,278 INFO L129 PetriNetUnfolder]: 6/115 cut-off events. [2022-04-18 15:51:17,279 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:51:17,279 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:17,280 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 15:51:17,280 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 15:51:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1238044933, now seen corresponding path program 1 times [2022-04-18 15:51:17,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:17,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724989041] [2022-04-18 15:51:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:17,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:17,474 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 15:51:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724989041] [2022-04-18 15:51:17,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724989041] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:17,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:17,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:51:17,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110199588] [2022-04-18 15:51:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:17,483 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:51:17,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:17,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:51:17,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:51:17,508 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 372 [2022-04-18 15:51:17,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 372 transitions, 766 flow. Second operand has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:17,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 372 [2022-04-18 15:51:17,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:17,644 INFO L129 PetriNetUnfolder]: 15/623 cut-off events. [2022-04-18 15:51:17,644 INFO L130 PetriNetUnfolder]: For 36/49 co-relation queries the response was YES. [2022-04-18 15:51:17,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 623 events. 15/623 cut-off events. For 36/49 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2645 event pairs, 0 based on Foata normal form. 59/624 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2022-04-18 15:51:17,650 INFO L132 encePairwiseOnDemand]: 355/372 looper letters, 6 selfloop transitions, 0 changer transitions 0/354 dead transitions. [2022-04-18 15:51:17,651 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 354 transitions, 742 flow [2022-04-18 15:51:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:51:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:51:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 719 transitions. [2022-04-18 15:51:17,667 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9663978494623656 [2022-04-18 15:51:17,667 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 719 transitions. [2022-04-18 15:51:17,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 719 transitions. [2022-04-18 15:51:17,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:17,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 719 transitions. [2022-04-18 15:51:17,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 359.5) internal successors, (719), 2 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,682 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,684 INFO L186 Difference]: Start difference. First operand has 352 places, 372 transitions, 766 flow. Second operand 2 states and 719 transitions. [2022-04-18 15:51:17,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 354 transitions, 742 flow [2022-04-18 15:51:17,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 354 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:17,696 INFO L242 Difference]: Finished difference. Result has 352 places, 354 transitions, 730 flow [2022-04-18 15:51:17,698 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=730, PETRI_PLACES=352, PETRI_TRANSITIONS=354} [2022-04-18 15:51:17,703 INFO L335 CegarLoopForPetriNet]: 352 programPoint places, 0 predicate places. [2022-04-18 15:51:17,703 INFO L478 AbstractCegarLoop]: Abstraction has has 352 places, 354 transitions, 730 flow [2022-04-18 15:51:17,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 349.0) internal successors, (698), 2 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,704 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:17,704 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 15:51:17,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:51:17,705 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 15:51:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash -440326811, now seen corresponding path program 1 times [2022-04-18 15:51:17,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:17,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318294551] [2022-04-18 15:51:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:17,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:17,797 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 15:51:17,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:17,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318294551] [2022-04-18 15:51:17,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318294551] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:17,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:17,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:51:17,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448021593] [2022-04-18 15:51:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:17,802 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:17,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:17,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:17,804 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 372 [2022-04-18 15:51:17,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 354 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:17,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 372 [2022-04-18 15:51:17,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:17,932 INFO L129 PetriNetUnfolder]: 15/662 cut-off events. [2022-04-18 15:51:17,932 INFO L130 PetriNetUnfolder]: For 36/49 co-relation queries the response was YES. [2022-04-18 15:51:17,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 662 events. 15/662 cut-off events. For 36/49 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2639 event pairs, 0 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 715. Up to 26 conditions per place. [2022-04-18 15:51:17,938 INFO L132 encePairwiseOnDemand]: 369/372 looper letters, 29 selfloop transitions, 2 changer transitions 0/365 dead transitions. [2022-04-18 15:51:17,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 365 transitions, 814 flow [2022-04-18 15:51:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2022-04-18 15:51:17,941 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9265232974910395 [2022-04-18 15:51:17,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2022-04-18 15:51:17,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2022-04-18 15:51:17,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:17,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2022-04-18 15:51:17,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,947 INFO L186 Difference]: Start difference. First operand has 352 places, 354 transitions, 730 flow. Second operand 3 states and 1034 transitions. [2022-04-18 15:51:17,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 365 transitions, 814 flow [2022-04-18 15:51:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 365 transitions, 814 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:17,955 INFO L242 Difference]: Finished difference. Result has 355 places, 355 transitions, 742 flow [2022-04-18 15:51:17,956 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=355, PETRI_TRANSITIONS=355} [2022-04-18 15:51:17,956 INFO L335 CegarLoopForPetriNet]: 352 programPoint places, 3 predicate places. [2022-04-18 15:51:17,957 INFO L478 AbstractCegarLoop]: Abstraction has has 355 places, 355 transitions, 742 flow [2022-04-18 15:51:17,957 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:17,957 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:17,958 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 15:51:17,958 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:51:17,958 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 15:51:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash 8954508, now seen corresponding path program 1 times [2022-04-18 15:51:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704646088] [2022-04-18 15:51:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:18,089 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 15:51:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:18,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704646088] [2022-04-18 15:51:18,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704646088] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:18,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:18,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033541033] [2022-04-18 15:51:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:18,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:18,094 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 372 [2022-04-18 15:51:18,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 355 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:18,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:18,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 372 [2022-04-18 15:51:18,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:29,992 INFO L129 PetriNetUnfolder]: 46756/104590 cut-off events. [2022-04-18 15:51:29,993 INFO L130 PetriNetUnfolder]: For 616/616 co-relation queries the response was YES. [2022-04-18 15:51:30,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175779 conditions, 104590 events. 46756/104590 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 1150600 event pairs, 45420 based on Foata normal form. 0/90894 useless extension candidates. Maximal degree in co-relation 175772. Up to 70895 conditions per place. [2022-04-18 15:51:30,698 INFO L132 encePairwiseOnDemand]: 366/372 looper letters, 120 selfloop transitions, 5 changer transitions 0/354 dead transitions. [2022-04-18 15:51:30,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 354 transitions, 990 flow [2022-04-18 15:51:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1494 transitions. [2022-04-18 15:51:30,702 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2022-04-18 15:51:30,702 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1494 transitions. [2022-04-18 15:51:30,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1494 transitions. [2022-04-18 15:51:30,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:30,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1494 transitions. [2022-04-18 15:51:30,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,710 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,710 INFO L186 Difference]: Start difference. First operand has 355 places, 355 transitions, 742 flow. Second operand 6 states and 1494 transitions. [2022-04-18 15:51:30,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 354 transitions, 990 flow [2022-04-18 15:51:30,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 354 transitions, 988 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:51:30,723 INFO L242 Difference]: Finished difference. Result has 358 places, 354 transitions, 748 flow [2022-04-18 15:51:30,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=748, PETRI_PLACES=358, PETRI_TRANSITIONS=354} [2022-04-18 15:51:30,725 INFO L335 CegarLoopForPetriNet]: 352 programPoint places, 6 predicate places. [2022-04-18 15:51:30,725 INFO L478 AbstractCegarLoop]: Abstraction has has 358 places, 354 transitions, 748 flow [2022-04-18 15:51:30,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:30,727 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 15:51:30,727 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:51:30,727 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 15:51:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash -132612616, now seen corresponding path program 1 times [2022-04-18 15:51:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371804004] [2022-04-18 15:51:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:30,855 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 15:51:30,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371804004] [2022-04-18 15:51:30,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371804004] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:30,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:30,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603684956] [2022-04-18 15:51:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:30,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:30,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:30,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:30,859 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 372 [2022-04-18 15:51:30,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 354 transitions, 748 flow. Second operand has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:30,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 372 [2022-04-18 15:51:30,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:41,758 INFO L129 PetriNetUnfolder]: 46756/104588 cut-off events. [2022-04-18 15:51:41,758 INFO L130 PetriNetUnfolder]: For 617/617 co-relation queries the response was YES. [2022-04-18 15:51:42,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175784 conditions, 104588 events. 46756/104588 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 1150913 event pairs, 45420 based on Foata normal form. 0/90894 useless extension candidates. Maximal degree in co-relation 175777. Up to 70893 conditions per place. [2022-04-18 15:51:42,522 INFO L132 encePairwiseOnDemand]: 366/372 looper letters, 119 selfloop transitions, 5 changer transitions 0/353 dead transitions. [2022-04-18 15:51:42,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 353 transitions, 994 flow [2022-04-18 15:51:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1493 transitions. [2022-04-18 15:51:42,525 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6689068100358423 [2022-04-18 15:51:42,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1493 transitions. [2022-04-18 15:51:42,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1493 transitions. [2022-04-18 15:51:42,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1493 transitions. [2022-04-18 15:51:42,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.83333333333334) internal successors, (1493), 6 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,548 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,548 INFO L186 Difference]: Start difference. First operand has 358 places, 354 transitions, 748 flow. Second operand 6 states and 1493 transitions. [2022-04-18 15:51:42,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 353 transitions, 994 flow [2022-04-18 15:51:42,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 353 transitions, 984 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:42,555 INFO L242 Difference]: Finished difference. Result has 357 places, 353 transitions, 746 flow [2022-04-18 15:51:42,556 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=746, PETRI_PLACES=357, PETRI_TRANSITIONS=353} [2022-04-18 15:51:42,557 INFO L335 CegarLoopForPetriNet]: 352 programPoint places, 5 predicate places. [2022-04-18 15:51:42,557 INFO L478 AbstractCegarLoop]: Abstraction has has 357 places, 353 transitions, 746 flow [2022-04-18 15:51:42,557 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,558 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:42,558 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 15:51:42,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:51:42,558 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 15:51:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1277110762, now seen corresponding path program 1 times [2022-04-18 15:51:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:42,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407353628] [2022-04-18 15:51:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:42,674 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 15:51:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:42,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407353628] [2022-04-18 15:51:42,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407353628] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:42,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:42,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:42,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245321925] [2022-04-18 15:51:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:42,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:42,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:42,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:42,680 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 372 [2022-04-18 15:51:42,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 353 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 223.83333333333334) internal successors, (1343), 6 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:42,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 372 [2022-04-18 15:51:42,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand