./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:20:21,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:20:21,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:20:21,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:20:21,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:20:21,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:20:21,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:20:21,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:20:21,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:20:21,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:20:21,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:20:21,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:20:21,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:20:21,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:20:21,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:20:21,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:20:21,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:20:21,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:20:21,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:20:21,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:20:21,769 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:20:21,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:20:21,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:20:21,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:20:21,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:20:21,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:20:21,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:20:21,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:20:21,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:20:21,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:20:21,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:20:21,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:20:21,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:20:21,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:20:21,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:20:21,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:20:21,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:20:21,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:20:21,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:20:21,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:20:21,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:20:21,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:20:21,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:20:21,810 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:20:21,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:20:21,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:20:21,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:20:21,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:20:21,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:20:21,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:20:21,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:20:21,812 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:20:21,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:20:21,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:20:21,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:20:21,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:20:21,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:20:21,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:20:21,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:20:21,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:20:21,814 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:20:21,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:20:21,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:20:21,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:20:21,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:20:21,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:20:21,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:20:21,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:20:21,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:20:21,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:20:21,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:20:21,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:20:21,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:20:21,817 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:20:21,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:20:21,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:20:21,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-07-19 21:20:22,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:20:22,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:20:22,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:20:22,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:20:22,051 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:20:22,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-19 21:20:22,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344fdfd81/60d7005de9784b53a9cb616688407c48/FLAG1cfbb744d [2022-07-19 21:20:22,555 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:20:22,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-07-19 21:20:22,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344fdfd81/60d7005de9784b53a9cb616688407c48/FLAG1cfbb744d [2022-07-19 21:20:22,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344fdfd81/60d7005de9784b53a9cb616688407c48 [2022-07-19 21:20:22,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:20:22,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:20:22,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:20:22,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:20:22,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:20:22,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:20:22" (1/1) ... [2022-07-19 21:20:22,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673d91d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:22, skipping insertion in model container [2022-07-19 21:20:22,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:20:22" (1/1) ... [2022-07-19 21:20:22,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:20:23,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:20:23,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-07-19 21:20:23,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:20:23,352 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:20:23,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-07-19 21:20:23,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:20:23,445 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:20:23,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23 WrapperNode [2022-07-19 21:20:23,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:20:23,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:20:23,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:20:23,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:20:23,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,512 INFO L137 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 204 [2022-07-19 21:20:23,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:20:23,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:20:23,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:20:23,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:20:23,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:20:23,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:20:23,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:20:23,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:20:23,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (1/1) ... [2022-07-19 21:20:23,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:20:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:20:23,617 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) [2022-07-19 21:20:23,621 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 [2022-07-19 21:20:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:20:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:20:23,663 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-07-19 21:20:23,663 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-07-19 21:20:23,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:20:23,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:20:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:20:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:20:23,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:20:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:20:23,667 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:20:23,785 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:20:23,796 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:20:24,099 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:20:24,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:20:24,108 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-19 21:20:24,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:20:24 BoogieIcfgContainer [2022-07-19 21:20:24,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:20:24,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:20:24,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:20:24,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:20:24,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:20:22" (1/3) ... [2022-07-19 21:20:24,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1065d306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:20:24, skipping insertion in model container [2022-07-19 21:20:24,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:20:23" (2/3) ... [2022-07-19 21:20:24,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1065d306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:20:24, skipping insertion in model container [2022-07-19 21:20:24,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:20:24" (3/3) ... [2022-07-19 21:20:24,116 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-07-19 21:20:24,120 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:20:24,126 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:20:24,126 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:20:24,127 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:20:24,186 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-19 21:20:24,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 220 transitions, 462 flow [2022-07-19 21:20:24,321 INFO L129 PetriNetUnfolder]: 52/414 cut-off events. [2022-07-19 21:20:24,321 INFO L130 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-07-19 21:20:24,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 414 events. 52/414 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1661 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-07-19 21:20:24,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 220 transitions, 462 flow [2022-07-19 21:20:24,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 218 transitions, 452 flow [2022-07-19 21:20:24,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:24,350 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102ff93b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@401bb3c [2022-07-19 21:20:24,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:20:24,378 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2022-07-19 21:20:24,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:20:24,379 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:24,380 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:24,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:20:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:24,384 INFO L85 PathProgramCache]: Analyzing trace with hash 621174435, now seen corresponding path program 1 times [2022-07-19 21:20:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:24,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978449045] [2022-07-19 21:20:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:24,507 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:24,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:24,556 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:24,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-19 21:20:24,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-19 21:20:24,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-19 21:20:24,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-19 21:20:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:20:24,559 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:24,567 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:24,567 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-19 21:20:24,634 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-07-19 21:20:24,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-07-19 21:20:24,860 INFO L129 PetriNetUnfolder]: 191/1219 cut-off events. [2022-07-19 21:20:24,860 INFO L130 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-07-19 21:20:24,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7632 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-07-19 21:20:24,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 340 transitions, 728 flow [2022-07-19 21:20:24,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 340 transitions, 728 flow [2022-07-19 21:20:24,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:24,898 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102ff93b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@401bb3c [2022-07-19 21:20:24,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:20:24,922 INFO L129 PetriNetUnfolder]: 17/251 cut-off events. [2022-07-19 21:20:24,922 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:20:24,922 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:24,923 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:24,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-19 21:20:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1276034956, now seen corresponding path program 1 times [2022-07-19 21:20:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:24,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243548883] [2022-07-19 21:20:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:24,998 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:25,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:25,054 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:25,055 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-19 21:20:25,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:20:25,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-19 21:20:25,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:20:25,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-19 21:20:25,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:20:25,056 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:25,057 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:25,058 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-19 21:20:25,134 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-07-19 21:20:25,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-07-19 21:20:25,909 INFO L129 PetriNetUnfolder]: 664/3388 cut-off events. [2022-07-19 21:20:25,910 INFO L130 PetriNetUnfolder]: For 419/475 co-relation queries the response was YES. [2022-07-19 21:20:25,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/475 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26264 event pairs, 64 based on Foata normal form. 0/2886 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-07-19 21:20:25,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 460 transitions, 998 flow [2022-07-19 21:20:26,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 460 transitions, 998 flow [2022-07-19 21:20:26,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:26,054 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102ff93b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@401bb3c [2022-07-19 21:20:26,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-19 21:20:26,104 INFO L129 PetriNetUnfolder]: 44/517 cut-off events. [2022-07-19 21:20:26,105 INFO L130 PetriNetUnfolder]: For 22/36 co-relation queries the response was YES. [2022-07-19 21:20:26,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:26,105 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:26,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-19 21:20:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1807325972, now seen corresponding path program 1 times [2022-07-19 21:20:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:26,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304441355] [2022-07-19 21:20:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:26,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:26,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:26,185 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:26,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-07-19 21:20:26,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-07-19 21:20:26,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-07-19 21:20:26,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-07-19 21:20:26,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-07-19 21:20:26,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-07-19 21:20:26,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:20:26,186 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:20:26,187 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:26,187 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-19 21:20:26,280 INFO L135 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-07-19 21:20:26,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 517 places, 580 transitions, 1272 flow [2022-07-19 21:20:29,404 INFO L129 PetriNetUnfolder]: 2659/10701 cut-off events. [2022-07-19 21:20:29,404 INFO L130 PetriNetUnfolder]: For 2144/2239 co-relation queries the response was YES. [2022-07-19 21:20:29,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12866 conditions, 10701 events. 2659/10701 cut-off events. For 2144/2239 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 98820 event pairs, 626 based on Foata normal form. 0/9268 useless extension candidates. Maximal degree in co-relation 6876. Up to 1024 conditions per place. [2022-07-19 21:20:29,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 580 transitions, 1272 flow [2022-07-19 21:20:29,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 580 transitions, 1272 flow [2022-07-19 21:20:29,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:29,870 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102ff93b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@401bb3c [2022-07-19 21:20:29,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 21:20:29,914 INFO L129 PetriNetUnfolder]: 46/534 cut-off events. [2022-07-19 21:20:29,914 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-19 21:20:29,914 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:29,915 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:29,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:20:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1567120559, now seen corresponding path program 1 times [2022-07-19 21:20:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369232724] [2022-07-19 21:20:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:20:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:20:30,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:20:30,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369232724] [2022-07-19 21:20:30,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369232724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:20:30,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:20:30,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:20:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991023797] [2022-07-19 21:20:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:20:30,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:20:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:20:30,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:20:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:20:30,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 493 out of 580 [2022-07-19 21:20:30,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 580 transitions, 1272 flow. Second operand has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:30,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:20:30,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 493 of 580 [2022-07-19 21:20:30,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:20:33,604 INFO L129 PetriNetUnfolder]: 1860/9545 cut-off events. [2022-07-19 21:20:33,604 INFO L130 PetriNetUnfolder]: For 6471/7978 co-relation queries the response was YES. [2022-07-19 21:20:33,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 9545 events. 1860/9545 cut-off events. For 6471/7978 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 92470 event pairs, 324 based on Foata normal form. 12758/21645 useless extension candidates. Maximal degree in co-relation 7288. Up to 2088 conditions per place. [2022-07-19 21:20:34,130 INFO L132 encePairwiseOnDemand]: 525/580 looper letters, 33 selfloop transitions, 2 changer transitions 0/528 dead transitions. [2022-07-19 21:20:34,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 528 transitions, 1238 flow [2022-07-19 21:20:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:20:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:20:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1568 transitions. [2022-07-19 21:20:34,148 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9011494252873563 [2022-07-19 21:20:34,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1568 transitions. [2022-07-19 21:20:34,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1568 transitions. [2022-07-19 21:20:34,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:20:34,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1568 transitions. [2022-07-19 21:20:34,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:34,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:34,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 580.0) internal successors, (2320), 4 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:34,172 INFO L186 Difference]: Start difference. First operand has 517 places, 580 transitions, 1272 flow. Second operand 3 states and 1568 transitions. [2022-07-19 21:20:34,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 528 transitions, 1238 flow [2022-07-19 21:20:34,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 528 transitions, 1238 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:20:34,199 INFO L242 Difference]: Finished difference. Result has 516 places, 525 transitions, 1172 flow [2022-07-19 21:20:34,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=580, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1172, PETRI_PLACES=516, PETRI_TRANSITIONS=525} [2022-07-19 21:20:34,204 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -1 predicate places. [2022-07-19 21:20:34,204 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 525 transitions, 1172 flow [2022-07-19 21:20:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 494.6666666666667) internal successors, (1484), 3 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:34,205 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:34,206 INFO L200 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:34,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:20:34,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-19 21:20:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:34,207 INFO L85 PathProgramCache]: Analyzing trace with hash 918640571, now seen corresponding path program 1 times [2022-07-19 21:20:34,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:34,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693516802] [2022-07-19 21:20:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:34,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:34,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:20:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:20:34,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:20:34,294 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:20:34,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-19 21:20:34,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-19 21:20:34,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-19 21:20:34,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-19 21:20:34,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-19 21:20:34,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-19 21:20:34,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-19 21:20:34,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:20:34,296 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 21:20:34,296 WARN L231 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-19 21:20:34,296 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-07-19 21:20:34,365 INFO L135 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-07-19 21:20:34,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 622 places, 700 transitions, 1550 flow [2022-07-19 21:20:49,127 INFO L129 PetriNetUnfolder]: 11792/39142 cut-off events. [2022-07-19 21:20:49,128 INFO L130 PetriNetUnfolder]: For 10450/10586 co-relation queries the response was YES. [2022-07-19 21:20:51,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49568 conditions, 39142 events. 11792/39142 cut-off events. For 10450/10586 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 428792 event pairs, 4296 based on Foata normal form. 0/34440 useless extension candidates. Maximal degree in co-relation 24907. Up to 5120 conditions per place. [2022-07-19 21:20:51,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 700 transitions, 1550 flow [2022-07-19 21:20:52,539 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 700 transitions, 1550 flow [2022-07-19 21:20:52,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:20:52,540 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@102ff93b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@401bb3c [2022-07-19 21:20:52,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-19 21:20:52,581 INFO L129 PetriNetUnfolder]: 49/555 cut-off events. [2022-07-19 21:20:52,582 INFO L130 PetriNetUnfolder]: For 25/39 co-relation queries the response was YES. [2022-07-19 21:20:52,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:20:52,582 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:20:52,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2022-07-19 21:20:52,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:20:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash -212499005, now seen corresponding path program 1 times [2022-07-19 21:20:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:20:52,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369143928] [2022-07-19 21:20:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:20:52,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:20:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:20:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:20:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:20:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369143928] [2022-07-19 21:20:52,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369143928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:20:52,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:20:52,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:20:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204476552] [2022-07-19 21:20:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:20:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:20:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:20:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:20:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:20:52,631 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 594 out of 700 [2022-07-19 21:20:52,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 700 transitions, 1550 flow. Second operand has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:20:52,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:20:52,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 594 of 700 [2022-07-19 21:20:52,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand