/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-RepeatedSemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 06:51:09,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 06:51:09,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 06:51:09,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 06:51:09,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 06:51:09,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 06:51:09,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 06:51:09,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 06:51:09,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 06:51:09,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 06:51:09,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 06:51:09,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 06:51:09,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 06:51:09,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 06:51:09,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 06:51:09,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 06:51:09,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 06:51:09,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 06:51:09,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 06:51:09,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 06:51:09,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 06:51:09,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 06:51:09,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 06:51:09,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 06:51:09,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-13 06:51:09,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 06:51:09,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 06:51:09,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 06:51:09,365 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-RepeatedSemanticLbe.epf [2022-12-13 06:51:09,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 06:51:09,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 06:51:09,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 06:51:09,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 06:51:09,394 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 06:51:09,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 06:51:09,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 06:51:09,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 06:51:09,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 06:51:09,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 06:51:09,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 06:51:09,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 06:51:09,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:09,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 06:51:09,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 06:51:09,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-13 06:51:09,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 06:51:09,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 06:51:09,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 06:51:09,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 06:51:09,650 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 06:51:09,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-13 06:51:10,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 06:51:10,869 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 06:51:10,869 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-13 06:51:10,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ded05fd4/99151b8acf944d638567536dfe4ccd74/FLAGdecbf6964 [2022-12-13 06:51:10,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ded05fd4/99151b8acf944d638567536dfe4ccd74 [2022-12-13 06:51:10,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 06:51:10,898 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 06:51:10,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:10,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 06:51:10,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 06:51:10,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:10" (1/1) ... [2022-12-13 06:51:10,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4532af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:10, skipping insertion in model container [2022-12-13 06:51:10,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:10" (1/1) ... [2022-12-13 06:51:10,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 06:51:10,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 06:51:11,087 WARN L237 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_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-13 06:51:11,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:11,211 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 06:51:11,221 WARN L237 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_41-threadenter-no-locals_unknown_1_neg.i[1102,1115] [2022-12-13 06:51:11,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 06:51:11,275 INFO L208 MainTranslator]: Completed translation [2022-12-13 06:51:11,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11 WrapperNode [2022-12-13 06:51:11,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 06:51:11,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:11,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 06:51:11,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 06:51:11,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,319 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-13 06:51:11,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 06:51:11,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 06:51:11,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 06:51:11,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 06:51:11,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 06:51:11,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 06:51:11,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 06:51:11,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 06:51:11,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (1/1) ... [2022-12-13 06:51:11,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 06:51:11,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 06:51:11,392 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) [2022-12-13 06:51:11,411 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 [2022-12-13 06:51:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 06:51:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 06:51:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 06:51:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 06:51:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 06:51:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 06:51:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 06:51:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 06:51:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 06:51:11,433 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 06:51:11,575 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 06:51:11,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 06:51:11,700 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 06:51:11,704 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 06:51:11,704 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 06:51:11,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:11 BoogieIcfgContainer [2022-12-13 06:51:11,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 06:51:11,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 06:51:11,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 06:51:11,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 06:51:11,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:51:10" (1/3) ... [2022-12-13 06:51:11,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1d78cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:11, skipping insertion in model container [2022-12-13 06:51:11,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:11" (2/3) ... [2022-12-13 06:51:11,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1d78cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:11, skipping insertion in model container [2022-12-13 06:51:11,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:11" (3/3) ... [2022-12-13 06:51:11,711 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-13 06:51:11,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 06:51:11,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 06:51:11,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 06:51:11,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 06:51:11,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 79 flow [2022-12-13 06:51:11,800 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-12-13 06:51:11,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:11,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2022-12-13 06:51:11,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 79 flow [2022-12-13 06:51:11,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 65 flow [2022-12-13 06:51:11,811 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 06:51:11,823 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-13 06:51:11,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 65 flow [2022-12-13 06:51:11,833 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-12-13 06:51:11,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:11,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-13 06:51:11,834 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-13 06:51:11,835 INFO L226 LiptonReduction]: Number of co-enabled transitions 126 [2022-12-13 06:51:13,074 INFO L241 LiptonReduction]: Total number of compositions: 27 [2022-12-13 06:51:13,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 06:51:13,097 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=REPEATED_LIPTON_PN, 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;@3893ed63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 06:51:13,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 06:51:13,101 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-13 06:51:13,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 06:51:13,102 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 06:51:13,102 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 06:51:13,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 06:51:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 06:51:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 161610, now seen corresponding path program 1 times [2022-12-13 06:51:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 06:51:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654598581] [2022-12-13 06:51:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 06:51:13,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 06:51:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 06:51:13,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 06:51:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 06:51:13,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 06:51:13,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 06:51:13,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 06:51:13,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 06:51:13,278 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-13 06:51:13,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 06:51:13,279 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 06:51:13,289 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 06:51:13,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 06:51:13,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:51:13 BasicIcfg [2022-12-13 06:51:13,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 06:51:13,301 INFO L158 Benchmark]: Toolchain (without parser) took 2402.97ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 207.1MB in the beginning and 249.0MB in the end (delta: -41.9MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. [2022-12-13 06:51:13,301 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 231.7MB. Free memory was 208.5MB in the beginning and 208.4MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 06:51:13,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.23ms. Allocated memory is still 231.7MB. Free memory was 207.1MB in the beginning and 188.8MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-13 06:51:13,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.02ms. Allocated memory is still 231.7MB. Free memory was 188.8MB in the beginning and 186.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 06:51:13,302 INFO L158 Benchmark]: Boogie Preprocessor took 24.25ms. Allocated memory is still 231.7MB. Free memory was 186.7MB in the beginning and 185.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 06:51:13,303 INFO L158 Benchmark]: RCFGBuilder took 360.17ms. Allocated memory is still 231.7MB. Free memory was 185.6MB in the beginning and 173.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 06:51:13,303 INFO L158 Benchmark]: TraceAbstraction took 1592.86ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 172.5MB in the beginning and 249.0MB in the end (delta: -76.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 06:51:13,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 231.7MB. Free memory was 208.5MB in the beginning and 208.4MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 377.23ms. Allocated memory is still 231.7MB. Free memory was 207.1MB in the beginning and 188.8MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.02ms. Allocated memory is still 231.7MB. Free memory was 188.8MB in the beginning and 186.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.25ms. Allocated memory is still 231.7MB. Free memory was 186.7MB in the beginning and 185.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 360.17ms. Allocated memory is still 231.7MB. Free memory was 185.6MB in the beginning and 173.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1592.86ms. Allocated memory was 231.7MB in the beginning and 278.9MB in the end (delta: 47.2MB). Free memory was 172.5MB in the beginning and 249.0MB in the end (delta: -76.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.2s, 35 PlacesBefore, 14 PlacesAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 14 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 152, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 152, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 95, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 152, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 95, unknown conditional: 0, unknown unconditional: 95] , Statistics on independence cache: Total cache size (in pairs): 304, Positive cache size: 304, Positive conditional cache size: 0, Positive unconditional cache size: 304, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(!(x == 3)) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: 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, 52 locations, 3 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: 1.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2022-12-13 06:51:13,324 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...