/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 11:36:28,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 11:36:28,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 11:36:28,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 11:36:28,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 11:36:28,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 11:36:28,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 11:36:28,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 11:36:28,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 11:36:28,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 11:36:28,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 11:36:28,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 11:36:28,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 11:36:28,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 11:36:28,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 11:36:28,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 11:36:28,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 11:36:28,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 11:36:28,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 11:36:28,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 11:36:28,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 11:36:28,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 11:36:28,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 11:36:28,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 11:36:28,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 11:36:28,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 11:36:28,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 11:36:28,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 11:36:28,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 11:36:28,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 11:36:28,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 11:36:28,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 11:36:28,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 11:36:28,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 11:36:28,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 11:36:28,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 11:36:28,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 11:36:28,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 11:36:28,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 11:36:28,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 11:36:28,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 11:36:28,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 11:36:28,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 11:36:28,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 11:36:28,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 11:36:28,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 11:36:28,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 11:36:28,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 11:36:28,793 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 11:36:28,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 11:36:28,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 11:36:28,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 11:36:28,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 11:36:28,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 11:36:28,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 11:36:28,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 11:36:28,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 11:36:28,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 11:36:28,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 11:36:28,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 11:36:28,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:36:28,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 11:36:28,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 11:36:28,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 11:36:28,796 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 11:36:28,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 11:36:28,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 11:36:28,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 11:36:28,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 11:36:29,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 11:36:29,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 11:36:29,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 11:36:29,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 11:36:29,120 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 11:36:29,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2022-12-12 11:36:30,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 11:36:30,495 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 11:36:30,496 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2022-12-12 11:36:30,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007b50ed7/4906f4091e98445695f201aee4d1c8dc/FLAGee9e5a366 [2022-12-12 11:36:30,533 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007b50ed7/4906f4091e98445695f201aee4d1c8dc [2022-12-12 11:36:30,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 11:36:30,536 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 11:36:30,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 11:36:30,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 11:36:30,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 11:36:30,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:36:30" (1/1) ... [2022-12-12 11:36:30,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e0775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:30, skipping insertion in model container [2022-12-12 11:36:30,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:36:30" (1/1) ... [2022-12-12 11:36:30,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 11:36:30,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 11:36:30,755 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 11:36:31,000 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2022-12-12 11:36:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:36:31,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:36:31,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:36:31,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:36:31,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:36:31,040 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 11:36:31,068 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-12 11:36:31,082 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i[55547,55560] [2022-12-12 11:36:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:36:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:36:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:36:31,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:36:31,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:36:31,170 INFO L208 MainTranslator]: Completed translation [2022-12-12 11:36:31,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31 WrapperNode [2022-12-12 11:36:31,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 11:36:31,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 11:36:31,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 11:36:31,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 11:36:31,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,232 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-12 11:36:31,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 11:36:31,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 11:36:31,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 11:36:31,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 11:36:31,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 11:36:31,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 11:36:31,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 11:36:31,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 11:36:31,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (1/1) ... [2022-12-12 11:36:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:36:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:36:31,316 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) [2022-12-12 11:36:31,341 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 [2022-12-12 11:36:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 11:36:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 11:36:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 11:36:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 11:36:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 11:36:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-12 11:36:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-12 11:36:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 11:36:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 11:36:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 11:36:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 11:36:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 11:36:31,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 11:36:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 11:36:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 11:36:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 11:36:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 11:36:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 11:36:31,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 11:36:31,356 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 11:36:31,470 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 11:36:31,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 11:36:31,658 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 11:36:31,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 11:36:31,665 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 11:36:31,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:36:31 BoogieIcfgContainer [2022-12-12 11:36:31,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 11:36:31,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 11:36:31,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 11:36:31,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 11:36:31,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:36:30" (1/3) ... [2022-12-12 11:36:31,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9c08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:36:31, skipping insertion in model container [2022-12-12 11:36:31,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:36:31" (2/3) ... [2022-12-12 11:36:31,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9c08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:36:31, skipping insertion in model container [2022-12-12 11:36:31,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:36:31" (3/3) ... [2022-12-12 11:36:31,675 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-12-12 11:36:31,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 11:36:31,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 11:36:31,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 11:36:31,858 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-12-12 11:36:31,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 188 transitions, 483 flow [2022-12-12 11:36:32,009 INFO L130 PetriNetUnfolder]: 6/125 cut-off events. [2022-12-12 11:36:32,010 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 11:36:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 125 events. 6/125 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-12 11:36:32,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 188 transitions, 483 flow [2022-12-12 11:36:32,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 116 transitions, 283 flow [2022-12-12 11:36:32,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 11:36:32,044 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b60d9dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 11:36:32,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-12 11:36:32,097 INFO L130 PetriNetUnfolder]: 5/115 cut-off events. [2022-12-12 11:36:32,097 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 11:36:32,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:36:32,099 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:36:32,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-12 11:36:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:36:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1380669342, now seen corresponding path program 1 times [2022-12-12 11:36:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:36:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464526010] [2022-12-12 11:36:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:36:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:36:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:36:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:36:32,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:36:32,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464526010] [2022-12-12 11:36:32,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464526010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:36:32,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:36:32,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:36:32,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409663427] [2022-12-12 11:36:32,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:36:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:36:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:36:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:36:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:36:33,020 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 190 [2022-12-12 11:36:33,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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) [2022-12-12 11:36:33,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:36:33,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 190 [2022-12-12 11:36:33,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:36:33,497 INFO L130 PetriNetUnfolder]: 580/1440 cut-off events. [2022-12-12 11:36:33,497 INFO L131 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-12-12 11:36:33,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1440 events. 580/1440 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7989 event pairs, 169 based on Foata normal form. 1/1362 useless extension candidates. Maximal degree in co-relation 2520. Up to 520 conditions per place. [2022-12-12 11:36:33,510 INFO L137 encePairwiseOnDemand]: 179/190 looper letters, 50 selfloop transitions, 7 changer transitions 14/144 dead transitions. [2022-12-12 11:36:33,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 144 transitions, 517 flow [2022-12-12 11:36:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 11:36:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 11:36:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 798 transitions. [2022-12-12 11:36:33,530 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-12-12 11:36:33,535 INFO L295 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2022-12-12 11:36:33,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 144 transitions, 517 flow [2022-12-12 11:36:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 447 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-12-12 11:36:33,548 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 144 transitions, 447 flow [2022-12-12 11:36:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 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) [2022-12-12 11:36:33,549 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:36:33,549 INFO L214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:36:33,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 11:36:33,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-12 11:36:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:36:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1045781870, now seen corresponding path program 2 times [2022-12-12 11:36:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:36:33,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716010158] [2022-12-12 11:36:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:36:33,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:36:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 11:36:33,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 11:36:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 11:36:33,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 11:36:33,814 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 11:36:33,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2022-12-12 11:36:33,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2022-12-12 11:36:33,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2022-12-12 11:36:33,817 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2022-12-12 11:36:33,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-12-12 11:36:33,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2022-12-12 11:36:33,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-12-12 11:36:33,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-12-12 11:36:33,818 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-12 11:36:33,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-12 11:36:33,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-12 11:36:33,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-12 11:36:33,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 11:36:33,820 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2022-12-12 11:36:33,827 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 11:36:33,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 11:36:33,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:36:33 BasicIcfg [2022-12-12 11:36:33,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 11:36:33,984 INFO L158 Benchmark]: Toolchain (without parser) took 3448.09ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 164.9MB in the beginning and 91.0MB in the end (delta: 73.9MB). Peak memory consumption was 113.5MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,985 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 11:36:33,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.23ms. Allocated memory is still 190.8MB. Free memory was 164.9MB in the beginning and 131.6MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.54ms. Allocated memory is still 190.8MB. Free memory was 131.6MB in the beginning and 129.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,988 INFO L158 Benchmark]: Boogie Preprocessor took 39.76ms. Allocated memory is still 190.8MB. Free memory was 129.0MB in the beginning and 127.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,988 INFO L158 Benchmark]: RCFGBuilder took 393.35ms. Allocated memory is still 190.8MB. Free memory was 127.4MB in the beginning and 111.2MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,990 INFO L158 Benchmark]: TraceAbstraction took 2314.34ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 110.1MB in the beginning and 91.0MB in the end (delta: 19.1MB). Peak memory consumption was 59.0MB. Max. memory is 8.0GB. [2022-12-12 11:36:33,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 634.23ms. Allocated memory is still 190.8MB. Free memory was 164.9MB in the beginning and 131.6MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.54ms. Allocated memory is still 190.8MB. Free memory was 131.6MB in the beginning and 129.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.76ms. Allocated memory is still 190.8MB. Free memory was 129.0MB in the beginning and 127.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 393.35ms. Allocated memory is still 190.8MB. Free memory was 127.4MB in the beginning and 111.2MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2314.34ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 110.1MB in the beginning and 91.0MB in the end (delta: 19.1MB). Peak memory consumption was 59.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1123]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1124] 0 char *v; VAL [v={0:0}] [L1161] 0 pthread_t t; VAL [t={6:0}, v={0:0}] [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, pthread_create(&t, 0, thread0, 0)=-6, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; VAL [arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1163] 0 \read(t) VAL [\read(t)=-6, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-5, t={6:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-5, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1148] 1 \read(t1) VAL [\read(t1)=-5, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) VAL [\read(t1)=-5, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, malloc(sizeof(char))={3:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1128] 2 return 0; VAL [\read(t1)=-5, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\read(t1)=-5, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=-4, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t3, 0, thread3, 0)=-3, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=-2, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 3 v[0] = 'X' VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t4, 0, thread2, 0)=-2, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t5, 0, thread2, 0)=-1, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1153] 1 \read(t2) VAL [\read(t2)=-4, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1135] 3 return 0; VAL [\read(t2)=-4, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\read(t2)=-4, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 5 v[0] = 'X' VAL [\read(t2)=-4, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1133] 6 v[0] = 'X' VAL [\read(t2)=-4, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1135] 6 return 0; VAL [\read(t2)=-4, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\read(t3)=-3, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1140] 4 v[0] = 'Y' VAL [\read(t3)=-3, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1142] 4 return 0; VAL [\read(t3)=-3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\read(t3)=-3, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\read(t4)=-2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\read(t4)=-2, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] 1 \read(t5) VAL [\read(t5)=-1, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\read(t5)=-1, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={7:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t2={8:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t3={9:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t4={10:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t5={5:0}, v={3:0}] [L1157] 1 return 0; VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, v={3:0}] [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\read(t)=-6, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}, v[0]=89] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, v={3:0}] [L1123] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, v={3:0}] - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 218 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 20 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=447occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 70 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-12 11:36:34,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...