/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 16:57:50,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 16:57:50,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 16:57:50,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 16:57:50,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 16:57:50,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 16:57:50,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 16:57:50,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 16:57:50,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 16:57:50,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 16:57:50,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 16:57:50,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 16:57:50,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 16:57:50,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 16:57:50,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 16:57:50,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 16:57:50,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 16:57:50,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 16:57:50,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 16:57:50,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 16:57:50,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 16:57:50,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 16:57:50,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 16:57:50,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 16:57:50,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-06 16:57:50,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 16:57:50,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 16:57:50,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 16:57:50,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 16:57:50,927 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 16:57:50,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 16:57:50,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 16:57:50,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 16:57:50,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 16:57:50,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 16:57:50,930 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 16:57:50,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 16:57:50,931 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 16:57:50,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 16:57:50,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 16:57:50,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 16:57:50,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 16:57:50,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 16:57:50,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 16:57:50,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 16:57:50,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:57:50,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 16:57:50,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 16:57:50,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 16:57:50,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 16:57:50,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 16:57:50,934 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 16:57:50,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 16:57:50,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 16:57:51,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 16:57:51,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 16:57:51,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 16:57:51,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 16:57:51,200 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 16:57:51,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-12-06 16:57:52,249 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 16:57:52,526 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 16:57:52,527 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-12-06 16:57:52,535 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ac381d2/dfe9fb2fc72b4ab4984b6352019e5da9/FLAGad15da9f8 [2022-12-06 16:57:52,543 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ac381d2/dfe9fb2fc72b4ab4984b6352019e5da9 [2022-12-06 16:57:52,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 16:57:52,546 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 16:57:52,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 16:57:52,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 16:57:52,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 16:57:52,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19249bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52, skipping insertion in model container [2022-12-06 16:57:52,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 16:57:52,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 16:57:52,683 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/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-12-06 16:57:52,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:57:52,815 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 16:57:52,825 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/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-12-06 16:57:52,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 16:57:52,892 INFO L208 MainTranslator]: Completed translation [2022-12-06 16:57:52,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52 WrapperNode [2022-12-06 16:57:52,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 16:57:52,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 16:57:52,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 16:57:52,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 16:57:52,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,929 INFO L138 Inliner]: procedures = 163, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-06 16:57:52,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 16:57:52,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 16:57:52,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 16:57:52,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 16:57:52,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 16:57:52,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 16:57:52,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 16:57:52,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 16:57:52,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (1/1) ... [2022-12-06 16:57:52,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 16:57:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 16:57:52,975 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) [2022-12-06 16:57:52,978 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 [2022-12-06 16:57:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 16:57:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-06 16:57:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 16:57:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 16:57:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-06 16:57:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-06 16:57:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 16:57:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 16:57:53,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 16:57:53,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 16:57:53,028 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 16:57:53,115 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 16:57:53,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 16:57:53,232 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 16:57:53,237 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 16:57:53,238 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-06 16:57:53,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:53 BoogieIcfgContainer [2022-12-06 16:57:53,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 16:57:53,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 16:57:53,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 16:57:53,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 16:57:53,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 04:57:52" (1/3) ... [2022-12-06 16:57:53,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f84079c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:53, skipping insertion in model container [2022-12-06 16:57:53,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 04:57:52" (2/3) ... [2022-12-06 16:57:53,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f84079c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 04:57:53, skipping insertion in model container [2022-12-06 16:57:53,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 04:57:53" (3/3) ... [2022-12-06 16:57:53,245 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-12-06 16:57:53,274 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 16:57:53,274 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 16:57:53,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 16:57:53,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-06 16:57:53,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 173 flow [2022-12-06 16:57:53,420 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-12-06 16:57:53,420 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:57:53,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-06 16:57:53,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 84 transitions, 173 flow [2022-12-06 16:57:53,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 153 flow [2022-12-06 16:57:53,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 16:57:53,443 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;@5db70190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 16:57:53,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-06 16:57:53,469 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-12-06 16:57:53,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-06 16:57:53,470 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:53,470 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:53,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 77459898, now seen corresponding path program 1 times [2022-12-06 16:57:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:53,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476304528] [2022-12-06 16:57:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:53,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:53,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476304528] [2022-12-06 16:57:53,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476304528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:53,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:53,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 16:57:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332018191] [2022-12-06 16:57:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 16:57:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 16:57:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 16:57:54,044 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 84 [2022-12-06 16:57:54,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:54,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 84 [2022-12-06 16:57:54,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:54,120 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2022-12-06 16:57:54,121 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-06 16:57:54,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 122 events. 9/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 3/124 useless extension candidates. Maximal degree in co-relation 113. Up to 10 conditions per place. [2022-12-06 16:57:54,122 INFO L137 encePairwiseOnDemand]: 78/84 looper letters, 8 selfloop transitions, 3 changer transitions 9/87 dead transitions. [2022-12-06 16:57:54,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 217 flow [2022-12-06 16:57:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 16:57:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 16:57:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2022-12-06 16:57:54,137 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9064625850340136 [2022-12-06 16:57:54,141 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2022-12-06 16:57:54,141 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 217 flow [2022-12-06 16:57:54,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,141 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:54,141 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:54,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 16:57:54,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1708984952, now seen corresponding path program 1 times [2022-12-06 16:57:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:54,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711703923] [2022-12-06 16:57:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:54,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:54,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711703923] [2022-12-06 16:57:54,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711703923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:54,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:54,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:54,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902906401] [2022-12-06 16:57:54,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:54,407 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2022-12-06 16:57:54,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 52.125) internal successors, (417), 8 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:54,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2022-12-06 16:57:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:54,506 INFO L130 PetriNetUnfolder]: 35/189 cut-off events. [2022-12-06 16:57:54,506 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 16:57:54,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 189 events. 35/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 668 event pairs, 12 based on Foata normal form. 10/194 useless extension candidates. Maximal degree in co-relation 263. Up to 50 conditions per place. [2022-12-06 16:57:54,507 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 24 selfloop transitions, 7 changer transitions 15/84 dead transitions. [2022-12-06 16:57:54,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 271 flow [2022-12-06 16:57:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:57:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:57:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 337 transitions. [2022-12-06 16:57:54,508 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6686507936507936 [2022-12-06 16:57:54,509 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2022-12-06 16:57:54,509 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 271 flow [2022-12-06 16:57:54,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.125) internal successors, (417), 8 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,509 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:54,509 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:54,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 16:57:54,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1668632409, now seen corresponding path program 1 times [2022-12-06 16:57:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:54,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812138280] [2022-12-06 16:57:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:54,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812138280] [2022-12-06 16:57:54,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812138280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:54,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:54,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:57:54,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306731828] [2022-12-06 16:57:54,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:54,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:57:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:57:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:57:54,587 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-06 16:57:54,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:54,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-06 16:57:54,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:54,631 INFO L130 PetriNetUnfolder]: 30/190 cut-off events. [2022-12-06 16:57:54,631 INFO L131 PetriNetUnfolder]: For 44/56 co-relation queries the response was YES. [2022-12-06 16:57:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 190 events. 30/190 cut-off events. For 44/56 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 696 event pairs, 4 based on Foata normal form. 4/192 useless extension candidates. Maximal degree in co-relation 341. Up to 61 conditions per place. [2022-12-06 16:57:54,632 INFO L137 encePairwiseOnDemand]: 76/84 looper letters, 15 selfloop transitions, 4 changer transitions 28/97 dead transitions. [2022-12-06 16:57:54,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 97 transitions, 403 flow [2022-12-06 16:57:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:57:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:57:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2022-12-06 16:57:54,633 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-12-06 16:57:54,633 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2022-12-06 16:57:54,634 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 97 transitions, 403 flow [2022-12-06 16:57:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,634 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:54,634 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 16:57:54,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1947675229, now seen corresponding path program 2 times [2022-12-06 16:57:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:54,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957779534] [2022-12-06 16:57:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:54,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:54,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:54,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957779534] [2022-12-06 16:57:54,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957779534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:54,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:54,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 16:57:54,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365522978] [2022-12-06 16:57:54,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:54,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 16:57:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:54,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 16:57:54,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-06 16:57:54,864 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2022-12-06 16:57:54,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 97 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 52.25) internal successors, (418), 8 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:54,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2022-12-06 16:57:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:54,959 INFO L130 PetriNetUnfolder]: 17/151 cut-off events. [2022-12-06 16:57:54,959 INFO L131 PetriNetUnfolder]: For 96/112 co-relation queries the response was YES. [2022-12-06 16:57:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 151 events. 17/151 cut-off events. For 96/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 428 event pairs, 1 based on Foata normal form. 7/156 useless extension candidates. Maximal degree in co-relation 303. Up to 43 conditions per place. [2022-12-06 16:57:54,960 INFO L137 encePairwiseOnDemand]: 77/84 looper letters, 25 selfloop transitions, 4 changer transitions 27/91 dead transitions. [2022-12-06 16:57:54,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 459 flow [2022-12-06 16:57:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 16:57:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 16:57:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 331 transitions. [2022-12-06 16:57:54,964 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6567460317460317 [2022-12-06 16:57:54,964 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2022-12-06 16:57:54,964 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 459 flow [2022-12-06 16:57:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.25) internal successors, (418), 8 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:54,965 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:54,965 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:54,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 16:57:54,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1206118557, now seen corresponding path program 1 times [2022-12-06 16:57:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978912143] [2022-12-06 16:57:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:55,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978912143] [2022-12-06 16:57:55,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978912143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:55,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:55,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 16:57:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300127307] [2022-12-06 16:57:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 16:57:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 16:57:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 16:57:55,045 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-06 16:57:55,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:55,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:55,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-06 16:57:55,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:55,080 INFO L130 PetriNetUnfolder]: 16/153 cut-off events. [2022-12-06 16:57:55,080 INFO L131 PetriNetUnfolder]: For 189/213 co-relation queries the response was YES. [2022-12-06 16:57:55,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 153 events. 16/153 cut-off events. For 189/213 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 416 event pairs, 0 based on Foata normal form. 8/160 useless extension candidates. Maximal degree in co-relation 362. Up to 51 conditions per place. [2022-12-06 16:57:55,081 INFO L137 encePairwiseOnDemand]: 77/84 looper letters, 10 selfloop transitions, 4 changer transitions 41/102 dead transitions. [2022-12-06 16:57:55,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 637 flow [2022-12-06 16:57:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 16:57:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 16:57:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2022-12-06 16:57:55,082 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-12-06 16:57:55,083 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2022-12-06 16:57:55,083 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 102 transitions, 637 flow [2022-12-06 16:57:55,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:55,083 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 16:57:55,083 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 16:57:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 16:57:55,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 16:57:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 16:57:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash -303522679, now seen corresponding path program 2 times [2022-12-06 16:57:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 16:57:55,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470668850] [2022-12-06 16:57:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 16:57:55,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 16:57:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 16:57:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 16:57:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 16:57:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470668850] [2022-12-06 16:57:55,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470668850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 16:57:55,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 16:57:55,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 16:57:55,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238318447] [2022-12-06 16:57:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 16:57:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 16:57:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 16:57:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 16:57:55,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 16:57:55,211 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 84 [2022-12-06 16:57:55,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 102 transitions, 637 flow. Second operand has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:55,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 16:57:55,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 84 [2022-12-06 16:57:55,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 16:57:55,259 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-06 16:57:55,259 INFO L131 PetriNetUnfolder]: For 264/296 co-relation queries the response was YES. [2022-12-06 16:57:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 118 events. 7/118 cut-off events. For 264/296 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 206 event pairs, 0 based on Foata normal form. 8/125 useless extension candidates. Maximal degree in co-relation 276. Up to 31 conditions per place. [2022-12-06 16:57:55,259 INFO L137 encePairwiseOnDemand]: 77/84 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-12-06 16:57:55,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 89 transitions, 625 flow [2022-12-06 16:57:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 16:57:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 16:57:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 307 transitions. [2022-12-06 16:57:55,261 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7309523809523809 [2022-12-06 16:57:55,261 INFO L294 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2022-12-06 16:57:55,261 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 625 flow [2022-12-06 16:57:55,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.333333333333336) internal successors, (350), 6 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 16:57:55,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-06 16:57:55,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-06 16:57:55,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 16:57:55,264 INFO L458 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-12-06 16:57:55,266 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 16:57:55,266 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 16:57:55,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 04:57:55 BasicIcfg [2022-12-06 16:57:55,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 16:57:55,269 INFO L158 Benchmark]: Toolchain (without parser) took 2723.70ms. Allocated memory was 222.3MB in the beginning and 305.1MB in the end (delta: 82.8MB). Free memory was 198.2MB in the beginning and 252.0MB in the end (delta: -53.8MB). Peak memory consumption was 30.6MB. Max. memory is 8.0GB. [2022-12-06 16:57:55,270 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 198.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:57:55,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.90ms. Allocated memory is still 222.3MB. Free memory was 197.6MB in the beginning and 178.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-06 16:57:55,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.64ms. Allocated memory is still 222.3MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 16:57:55,270 INFO L158 Benchmark]: Boogie Preprocessor took 15.23ms. Allocated memory is still 222.3MB. Free memory was 176.1MB in the beginning and 175.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 16:57:55,271 INFO L158 Benchmark]: RCFGBuilder took 293.53ms. Allocated memory is still 222.3MB. Free memory was 174.6MB in the beginning and 160.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-06 16:57:55,271 INFO L158 Benchmark]: TraceAbstraction took 2028.40ms. Allocated memory was 222.3MB in the beginning and 305.1MB in the end (delta: 82.8MB). Free memory was 159.9MB in the beginning and 252.0MB in the end (delta: -92.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 16:57:55,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 198.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 346.90ms. Allocated memory is still 222.3MB. Free memory was 197.6MB in the beginning and 178.2MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.64ms. Allocated memory is still 222.3MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.23ms. Allocated memory is still 222.3MB. Free memory was 176.1MB in the beginning and 175.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 293.53ms. Allocated memory is still 222.3MB. Free memory was 174.6MB in the beginning and 160.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2028.40ms. Allocated memory was 222.3MB in the beginning and 305.1MB in the end (delta: 82.8MB). Free memory was 159.9MB in the beginning and 252.0MB in the end (delta: -92.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 102 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: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 336 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 53 mSDtfsCounter, 336 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=637occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 1.1s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 1279 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-06 16:57:55,298 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...