/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:38:06,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:38:06,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:38:06,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:38:06,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:38:06,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:38:06,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:38:06,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:38:06,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:38:06,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:38:06,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:38:06,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:38:06,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:38:06,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:38:06,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:38:06,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:38:06,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:38:06,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:38:06,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:38:06,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:38:06,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:38:06,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:38:06,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:38:06,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:38:06,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:38:06,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:38:06,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:38:06,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:38:06,600 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 [2022-09-20 22:38:06,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:38:06,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:38:06,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:38:06,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:38:06,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:38:06,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:38:06,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:38:06,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:38:06,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:38:06,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:38:06,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:38:06,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:38:06,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:38:06,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:38:06,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:38:06,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:38:06,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:38:06,841 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:38:06,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-09-20 22:38:06,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5224965e2/b4b161627f474cee82def3c05c8502d0/FLAGd9958fcfb [2022-09-20 22:38:07,299 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:38:07,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-09-20 22:38:07,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5224965e2/b4b161627f474cee82def3c05c8502d0/FLAGd9958fcfb [2022-09-20 22:38:07,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5224965e2/b4b161627f474cee82def3c05c8502d0 [2022-09-20 22:38:07,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:38:07,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:38:07,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:38:07,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:38:07,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:38:07,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74da0dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07, skipping insertion in model container [2022-09-20 22:38:07,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:38:07,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:38:07,550 WARN L230 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_52-refine-protected-loop2-small_true.i[1105,1118] [2022-09-20 22:38:07,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:38:07,681 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:38:07,689 WARN L230 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_52-refine-protected-loop2-small_true.i[1105,1118] [2022-09-20 22:38:07,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:38:07,744 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:38:07,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07 WrapperNode [2022-09-20 22:38:07,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:38:07,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:38:07,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:38:07,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:38:07,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,792 INFO L138 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-09-20 22:38:07,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:38:07,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:38:07,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:38:07,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:38:07,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:38:07,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:38:07,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:38:07,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:38:07,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (1/1) ... [2022-09-20 22:38:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:38:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:38:07,844 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) [2022-09-20 22:38:07,862 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 [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-09-20 22:38:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:38:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:38:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:38:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:38:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:38:07,882 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:38:07,946 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:38:07,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:38:08,049 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:38:08,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:38:08,054 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-09-20 22:38:08,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:38:08 BoogieIcfgContainer [2022-09-20 22:38:08,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:38:08,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:38:08,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:38:08,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:38:08,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:38:07" (1/3) ... [2022-09-20 22:38:08,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151dacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:38:08, skipping insertion in model container [2022-09-20 22:38:08,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:07" (2/3) ... [2022-09-20 22:38:08,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151dacf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:38:08, skipping insertion in model container [2022-09-20 22:38:08,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:38:08" (3/3) ... [2022-09-20 22:38:08,060 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2022-09-20 22:38:08,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:38:08,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:38:08,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:38:08,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:38:08,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 72 transitions, 149 flow [2022-09-20 22:38:08,156 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-09-20 22:38:08,156 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:38:08,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-09-20 22:38:08,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 72 transitions, 149 flow [2022-09-20 22:38:08,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 137 flow [2022-09-20 22:38:08,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:38:08,173 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;@38c383bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:38:08,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:38:08,186 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-09-20 22:38:08,186 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:38:08,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:08,187 INFO L208 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] [2022-09-20 22:38:08,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-09-20 22:38:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -824948169, now seen corresponding path program 1 times [2022-09-20 22:38:08,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226861514] [2022-09-20 22:38:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:08,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226861514] [2022-09-20 22:38:08,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226861514] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:08,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:08,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:38:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997962962] [2022-09-20 22:38:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:38:08,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:38:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:38:08,407 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-09-20 22:38:08,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2022-09-20 22:38:08,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:08,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-09-20 22:38:08,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:08,468 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2022-09-20 22:38:08,469 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:38:08,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 78 events. 2/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 38 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2022-09-20 22:38:08,470 INFO L137 encePairwiseOnDemand]: 66/72 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-09-20 22:38:08,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 167 flow [2022-09-20 22:38:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:38:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:38:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 352 transitions. [2022-09-20 22:38:08,486 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-09-20 22:38:08,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 352 transitions. [2022-09-20 22:38:08,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 352 transitions. [2022-09-20 22:38:08,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:08,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 352 transitions. [2022-09-20 22:38:08,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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) [2022-09-20 22:38:08,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-09-20 22:38:08,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-09-20 22:38:08,515 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 137 flow. Second operand 6 states and 352 transitions. [2022-09-20 22:38:08,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 167 flow [2022-09-20 22:38:08,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:38:08,522 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2022-09-20 22:38:08,523 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2022-09-20 22:38:08,527 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2022-09-20 22:38:08,528 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2022-09-20 22:38:08,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2022-09-20 22:38:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-09-20 22:38:08,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-09-20 22:38:08,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-09-20 22:38:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:38:08,531 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-20 22:38:08,538 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:38:08,538 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:38:08,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:38:08 BasicIcfg [2022-09-20 22:38:08,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:38:08,547 INFO L158 Benchmark]: Toolchain (without parser) took 1216.74ms. Allocated memory was 213.9MB in the beginning and 267.4MB in the end (delta: 53.5MB). Free memory was 183.0MB in the beginning and 238.2MB in the end (delta: -55.2MB). Peak memory consumption was 61.0MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,548 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 213.9MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:38:08,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.40ms. Allocated memory is still 213.9MB. Free memory was 182.8MB in the beginning and 177.6MB in the end (delta: 5.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.04ms. Allocated memory is still 213.9MB. Free memory was 177.6MB in the beginning and 175.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,549 INFO L158 Benchmark]: Boogie Preprocessor took 25.87ms. Allocated memory is still 213.9MB. Free memory was 175.6MB in the beginning and 174.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,550 INFO L158 Benchmark]: RCFGBuilder took 236.41ms. Allocated memory is still 213.9MB. Free memory was 174.3MB in the beginning and 162.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,552 INFO L158 Benchmark]: TraceAbstraction took 486.72ms. Allocated memory was 213.9MB in the beginning and 267.4MB in the end (delta: 53.5MB). Free memory was 161.7MB in the beginning and 238.2MB in the end (delta: -76.6MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. [2022-09-20 22:38:08,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 213.9MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 416.40ms. Allocated memory is still 213.9MB. Free memory was 182.8MB in the beginning and 177.6MB in the end (delta: 5.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.04ms. Allocated memory is still 213.9MB. Free memory was 177.6MB in the beginning and 175.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.87ms. Allocated memory is still 213.9MB. Free memory was 175.6MB in the beginning and 174.3MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.41ms. Allocated memory is still 213.9MB. Free memory was 174.3MB in the beginning and 162.6MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 486.72ms. Allocated memory was 213.9MB in the beginning and 267.4MB in the end (delta: 53.5MB). Free memory was 161.7MB in the beginning and 238.2MB in the end (delta: -76.6MB). Peak memory consumption was 40.7MB. 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, 95 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 22:38:08,608 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...