/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:25:12,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:25:12,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:25:12,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:25:12,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:25:12,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:25:12,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:25:12,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:25:12,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:25:12,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:25:12,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:25:12,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:25:12,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:25:12,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:25:12,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:25:12,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:25:12,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:25:12,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:25:12,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:25:12,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:25:12,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:25:12,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:25:12,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:25:12,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:25:12,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:25:12,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:25:12,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:25:12,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:25:12,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:25:12,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:25:12,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:25:12,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:25:12,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:25:12,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:25:12,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:25:12,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:25:12,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:25:12,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:25:12,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:25:12,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:25:12,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:25:12,557 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-VariableLbe.epf [2023-01-28 08:25:12,586 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:25:12,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:25:12,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:25:12,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:25:12,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:25:12,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:25:12,587 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:25:12,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:25:12,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:25:12,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:25:12,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:25:12,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:25:12,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:25:12,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:25:12,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:25:12,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:25:12,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:25:12,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:25:12,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:25:12,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:25:12,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:25:12,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:25:12,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:25:12,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:25:12,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:25:12,834 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:25:12,835 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:25:12,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-01-28 08:25:13,984 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:25:14,156 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:25:14,156 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-01-28 08:25:14,173 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bebadbda/598149ea4b5a4b1da9af472885c523c9/FLAGfd7b090fa [2023-01-28 08:25:14,186 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bebadbda/598149ea4b5a4b1da9af472885c523c9 [2023-01-28 08:25:14,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:25:14,189 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:25:14,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:25:14,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:25:14,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:25:14,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a8227d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14, skipping insertion in model container [2023-01-28 08:25:14,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:25:14,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:25:14,342 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-01-28 08:25:14,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:25:14,487 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:25:14,500 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-01-28 08:25:14,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:25:14,570 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:25:14,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14 WrapperNode [2023-01-28 08:25:14,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:25:14,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:25:14,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:25:14,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:25:14,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,625 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-01-28 08:25:14,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:25:14,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:25:14,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:25:14,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:25:14,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:25:14,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:25:14,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:25:14,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:25:14,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (1/1) ... [2023-01-28 08:25:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:25:14,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:25:14,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 08:25:14,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 08:25:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 08:25:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:25:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:25:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:25:14,721 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 08:25:14,864 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:25:14,866 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:25:15,025 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:25:15,031 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:25:15,031 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 08:25:15,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:25:15 BoogieIcfgContainer [2023-01-28 08:25:15,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:25:15,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:25:15,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:25:15,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:25:15,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:25:14" (1/3) ... [2023-01-28 08:25:15,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8598d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:25:15, skipping insertion in model container [2023-01-28 08:25:15,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:25:14" (2/3) ... [2023-01-28 08:25:15,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8598d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:25:15, skipping insertion in model container [2023-01-28 08:25:15,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:25:15" (3/3) ... [2023-01-28 08:25:15,040 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-01-28 08:25:15,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:25:15,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:25:15,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:25:15,107 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 08:25:15,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 151 flow [2023-01-28 08:25:15,162 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-01-28 08:25:15,163 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:25:15,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-01-28 08:25:15,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 151 flow [2023-01-28 08:25:15,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 127 flow [2023-01-28 08:25:15,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:25:15,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-28 08:25:15,183 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 62 transitions, 127 flow [2023-01-28 08:25:15,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 127 flow [2023-01-28 08:25:15,199 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2023-01-28 08:25:15,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:25:15,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-01-28 08:25:15,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-01-28 08:25:17,210 INFO L134 LiptonReduction]: Checked pairs total: 1016 [2023-01-28 08:25:17,210 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-01-28 08:25:17,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:25:17,229 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;@33d5995c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:25:17,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 08:25:17,232 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-01-28 08:25:17,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:25:17,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:25:17,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 08:25:17,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:25:17,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:25:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash 235099129, now seen corresponding path program 1 times [2023-01-28 08:25:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:25:17,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978426175] [2023-01-28 08:25:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:25:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:25:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:25:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:25:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:25:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978426175] [2023-01-28 08:25:17,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978426175] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:25:17,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:25:17,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 08:25:17,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826417386] [2023-01-28 08:25:17,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:25:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:25:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:25:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:25:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:25:17,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 125 [2023-01-28 08:25:17,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:25:17,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:25:17,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 125 [2023-01-28 08:25:17,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:25:17,676 INFO L130 PetriNetUnfolder]: 14/54 cut-off events. [2023-01-28 08:25:17,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 08:25:17,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 54 events. 14/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 6 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 95. Up to 27 conditions per place. [2023-01-28 08:25:17,679 INFO L137 encePairwiseOnDemand]: 120/125 looper letters, 10 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2023-01-28 08:25:17,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 65 flow [2023-01-28 08:25:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:25:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:25:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-01-28 08:25:17,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706666666666667 [2023-01-28 08:25:17,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-01-28 08:25:17,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-01-28 08:25:17,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:25:17,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-01-28 08:25:17,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:25:17,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:25:17,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:25:17,708 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 31 flow. Second operand 3 states and 214 transitions. [2023-01-28 08:25:17,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 65 flow [2023-01-28 08:25:17,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:25:17,711 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 46 flow [2023-01-28 08:25:17,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-01-28 08:25:17,716 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-01-28 08:25:17,716 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 46 flow [2023-01-28 08:25:17,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:25:17,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:25:17,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:25:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:25:17,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 08:25:17,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:25:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1253792415, now seen corresponding path program 1 times [2023-01-28 08:25:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:25:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814168780] [2023-01-28 08:25:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:25:17,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:25:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:25:17,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 08:25:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 08:25:17,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 08:25:17,797 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 08:25:17,798 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-28 08:25:17,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 08:25:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 08:25:17,800 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 08:25:17,804 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 08:25:17,804 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 08:25:17,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:25:17 BasicIcfg [2023-01-28 08:25:17,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 08:25:17,822 INFO L158 Benchmark]: Toolchain (without parser) took 3633.46ms. Allocated memory was 367.0MB in the beginning and 453.0MB in the end (delta: 86.0MB). Free memory was 324.3MB in the beginning and 424.5MB in the end (delta: -100.2MB). Peak memory consumption was 93.4MB. Max. memory is 16.0GB. [2023-01-28 08:25:17,823 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory was 212.5MB in the beginning and 212.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:25:17,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.58ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 305.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 08:25:17,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.78ms. Allocated memory is still 367.0MB. Free memory was 305.1MB in the beginning and 303.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:25:17,824 INFO L158 Benchmark]: Boogie Preprocessor took 27.32ms. Allocated memory is still 367.0MB. Free memory was 303.3MB in the beginning and 302.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:25:17,824 INFO L158 Benchmark]: RCFGBuilder took 379.09ms. Allocated memory is still 367.0MB. Free memory was 302.0MB in the beginning and 288.6MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 08:25:17,825 INFO L158 Benchmark]: TraceAbstraction took 2786.59ms. Allocated memory was 367.0MB in the beginning and 453.0MB in the end (delta: 86.0MB). Free memory was 288.0MB in the beginning and 424.5MB in the end (delta: -136.5MB). Peak memory consumption was 57.7MB. Max. memory is 16.0GB. [2023-01-28 08:25:17,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 255.9MB. Free memory was 212.5MB in the beginning and 212.4MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 381.58ms. Allocated memory is still 367.0MB. Free memory was 324.3MB in the beginning and 305.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.78ms. Allocated memory is still 367.0MB. Free memory was 305.1MB in the beginning and 303.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.32ms. Allocated memory is still 367.0MB. Free memory was 303.3MB in the beginning and 302.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 379.09ms. Allocated memory is still 367.0MB. Free memory was 302.0MB in the beginning and 288.6MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2786.59ms. Allocated memory was 367.0MB in the beginning and 453.0MB in the end (delta: 86.0MB). Free memory was 288.0MB in the beginning and 424.5MB in the end (delta: -136.5MB). Peak memory consumption was 57.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 65 PlacesBefore, 17 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 1016 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 449, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 195, independent: 170, independent conditional: 0, independent unconditional: 170, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 449, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 195, unknown conditional: 0, unknown unconditional: 195] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=1] [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, arg={0:0}, g=17, id={5:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 697]: 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 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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! [2023-01-28 08:25:17,844 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...