/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-SemanticLbe.epf -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-8d0d62b [2022-12-05 20:47:44,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 20:47:44,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 20:47:44,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-12-05 20:47:44,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 20:47:44,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 20:47:44,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 20:47:44,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 20:47:44,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 20:47:44,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 20:47:44,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 20:47:44,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 20:47:44,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 20:47:44,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 20:47:44,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 20:47:44,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 20:47:44,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 20:47:44,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 20:47:44,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 20:47:44,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 20:47:44,121 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-SemanticLbe.epf [2022-12-05 20:47:44,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 20:47:44,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 20:47:44,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 20:47:44,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 20:47:44,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 20:47:44,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 20:47:44,147 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 20:47:44,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 20:47:44,147 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 20:47:44,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 20:47:44,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 20:47:44,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 20:47:44,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:44,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 20:47:44,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 20:47:44,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 20:47:44,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 20:47:44,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 20:47:44,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 20:47:44,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 20:47:44,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 20:47:44,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 20:47:44,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 20:47:44,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 20:47:44,421 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 20:47:44,422 INFO L432 ainManager$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 [2022-12-05 20:47:45,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 20:47:45,521 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 20:47:45,521 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-05 20:47:45,530 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15453ba3f/d17639a4443344b9b10f9de027869352/FLAGbcc72c588 [2022-12-05 20:47:45,544 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15453ba3f/d17639a4443344b9b10f9de027869352 [2022-12-05 20:47:45,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 20:47:45,546 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 20:47:45,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:45,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 20:47:45,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 20:47:45,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136fb717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45, skipping insertion in model container [2022-12-05 20:47:45,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 20:47:45,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 20:47:45,700 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] [2022-12-05 20:47:45,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:45,817 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 20:47:45,826 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] [2022-12-05 20:47:45,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 20:47:45,871 INFO L208 MainTranslator]: Completed translation [2022-12-05 20:47:45,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45 WrapperNode [2022-12-05 20:47:45,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 20:47:45,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:45,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 20:47:45,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 20:47:45,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,907 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-05 20:47:45,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 20:47:45,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 20:47:45,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 20:47:45,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 20:47:45,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 20:47:45,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 20:47:45,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 20:47:45,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 20:47:45,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (1/1) ... [2022-12-05 20:47:45,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 20:47:45,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 20:47:45,955 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) [2022-12-05 20:47:45,970 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 [2022-12-05 20:47:45,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-05 20:47:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 20:47:45,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 20:47:45,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 20:47:45,980 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 20:47:46,049 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 20:47:46,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 20:47:46,111 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 20:47:46,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 20:47:46,114 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 20:47:46,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:46 BoogieIcfgContainer [2022-12-05 20:47:46,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 20:47:46,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 20:47:46,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 20:47:46,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 20:47:46,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:47:45" (1/3) ... [2022-12-05 20:47:46,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660e8256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:46, skipping insertion in model container [2022-12-05 20:47:46,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:47:45" (2/3) ... [2022-12-05 20:47:46,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660e8256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:47:46, skipping insertion in model container [2022-12-05 20:47:46,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:47:46" (3/3) ... [2022-12-05 20:47:46,120 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2022-12-05 20:47:46,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 20:47:46,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 20:47:46,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 20:47:46,170 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 20:47:46,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 79 flow [2022-12-05 20:47:46,213 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2022-12-05 20:47:46,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:46,215 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. [2022-12-05 20:47:46,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 79 flow [2022-12-05 20:47:46,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 65 flow [2022-12-05 20:47:46,218 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 20:47:46,228 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-05 20:47:46,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 65 flow [2022-12-05 20:47:46,242 INFO L130 PetriNetUnfolder]: 0/31 cut-off events. [2022-12-05 20:47:46,242 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:46,242 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. [2022-12-05 20:47:46,243 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 65 flow [2022-12-05 20:47:46,243 INFO L188 LiptonReduction]: Number of co-enabled transitions 126 [2022-12-05 20:47:47,235 INFO L203 LiptonReduction]: Total number of compositions: 27 [2022-12-05 20:47:47,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 20:47:47,248 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;@2e4ddf69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 20:47:47,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 20:47:47,250 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-05 20:47:47,250 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 20:47:47,250 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 20:47:47,250 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-05 20:47:47,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-05 20:47:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 20:47:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash 149104, now seen corresponding path program 1 times [2022-12-05 20:47:47,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 20:47:47,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015490315] [2022-12-05 20:47:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 20:47:47,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 20:47:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:47:47,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 20:47:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 20:47:47,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 20:47:47,363 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 20:47:47,364 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 20:47:47,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 20:47:47,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-12-05 20:47:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 20:47:47,366 INFO L458 BasicCegarLoop]: Path program histogram: [1] [2022-12-05 20:47:47,372 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 20:47:47,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 20:47:47,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:47:47 BasicIcfg [2022-12-05 20:47:47,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 20:47:47,385 INFO L158 Benchmark]: Toolchain (without parser) took 1838.55ms. Allocated memory was 199.2MB in the beginning and 247.5MB in the end (delta: 48.2MB). Free memory was 173.8MB in the beginning and 163.1MB in the end (delta: 10.7MB). Peak memory consumption was 59.5MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,386 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 20:47:47,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.58ms. Allocated memory is still 199.2MB. Free memory was 173.8MB in the beginning and 155.5MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.58ms. Allocated memory is still 199.2MB. Free memory was 155.5MB in the beginning and 153.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,389 INFO L158 Benchmark]: Boogie Preprocessor took 24.83ms. Allocated memory is still 199.2MB. Free memory was 153.4MB in the beginning and 152.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,390 INFO L158 Benchmark]: RCFGBuilder took 182.39ms. Allocated memory is still 199.2MB. Free memory was 152.3MB in the beginning and 141.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,391 INFO L158 Benchmark]: TraceAbstraction took 1267.01ms. Allocated memory was 199.2MB in the beginning and 247.5MB in the end (delta: 48.2MB). Free memory was 140.8MB in the beginning and 163.1MB in the end (delta: -22.3MB). Peak memory consumption was 25.9MB. Max. memory is 8.0GB. [2022-12-05 20:47:47,395 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 199.2MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.58ms. Allocated memory is still 199.2MB. Free memory was 173.8MB in the beginning and 155.5MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.58ms. Allocated memory is still 199.2MB. Free memory was 155.5MB in the beginning and 153.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.83ms. Allocated memory is still 199.2MB. Free memory was 153.4MB in the beginning and 152.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 182.39ms. Allocated memory is still 199.2MB. Free memory was 152.3MB in the beginning and 141.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1267.01ms. Allocated memory was 199.2MB in the beginning and 247.5MB in the end (delta: 48.2MB). Free memory was 140.8MB in the beginning and 163.1MB in the end (delta: -22.3MB). Peak memory consumption was 25.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 35 PlacesBefore, 8 PlacesAfterwards, 31 TransitionsBefore, 4 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 14 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 62, independent: 62, independent conditional: 62, 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: 62, independent: 62, independent conditional: 0, independent unconditional: 62, 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: 62, independent: 62, independent conditional: 0, independent unconditional: 62, 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: 62, independent: 62, independent conditional: 0, independent unconditional: 62, 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: 62, independent: 62, independent conditional: 0, independent unconditional: 62, 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: 62, independent: 62, independent conditional: 0, independent unconditional: 62, 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: 62, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 62, unknown conditional: 0, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, 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: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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! [2022-12-05 20:47:47,411 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...