/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/recursive/McCarthy91-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:19:28,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:19:28,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:19:28,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:19:28,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:19:28,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:19:28,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:19:28,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:19:28,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:19:28,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:19:28,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:19:28,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:19:28,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:19:28,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:19:28,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:19:28,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:19:28,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:19:28,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:19:28,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:19:28,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:19:28,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:19:28,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:19:28,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:19:28,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:19:28,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:19:28,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:19:28,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:19:28,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:19:28,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:19:28,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:19:28,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:19:28,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:19:28,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:19:28,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:19:28,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:19:28,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:19:28,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:19:28,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:19:28,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:19:28,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:19:28,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:19:28,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:19:28,144 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:19:28,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:19:28,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:19:28,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:19:28,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:19:28,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:19:28,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:19:28,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:19:28,146 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:19:28,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:19:28,147 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:19:28,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:19:28,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:19:28,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:19:28,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:19:28,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:19:28,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:19:28,150 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:19:28,150 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:19:28,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:19:28,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:19:28,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:19:28,377 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:19:28,378 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:19:28,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-1.c [2023-03-31 01:19:29,384 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:19:29,516 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:19:29,517 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c [2023-03-31 01:19:29,521 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436080169/f6204b98bca74417a9a145583ce293de/FLAG7ed1679cf [2023-03-31 01:19:29,532 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436080169/f6204b98bca74417a9a145583ce293de [2023-03-31 01:19:29,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:19:29,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:19:29,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:19:29,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:19:29,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:19:29,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d28aca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29, skipping insertion in model container [2023-03-31 01:19:29,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:19:29,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:19:29,673 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2023-03-31 01:19:29,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:19:29,689 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:19:29,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2023-03-31 01:19:29,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:19:29,708 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:19:29,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29 WrapperNode [2023-03-31 01:19:29,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:19:29,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:19:29,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:19:29,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:19:29,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:19:29,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:19:29,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:19:29,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:19:29,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (1/1) ... [2023-03-31 01:19:29,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:19:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:19:29,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:19:29,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:19:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:19:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:19:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:19:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2023-03-31 01:19:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:19:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:19:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:19:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:19:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:19:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:19:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:19:29,841 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:19:29,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:19:29,994 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:19:29,998 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:19:29,998 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:19:29,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:19:29 BoogieIcfgContainer [2023-03-31 01:19:30,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:19:30,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:19:30,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:19:30,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:19:30,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:19:29" (1/3) ... [2023-03-31 01:19:30,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0425fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:19:30, skipping insertion in model container [2023-03-31 01:19:30,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:29" (2/3) ... [2023-03-31 01:19:30,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0425fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:19:30, skipping insertion in model container [2023-03-31 01:19:30,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:19:29" (3/3) ... [2023-03-31 01:19:30,022 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2023-03-31 01:19:30,035 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:19:30,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:19:30,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:19:30,102 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=true, 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;@4a589348, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:19:30,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:19:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 01:19:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 01:19:30,111 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:19:30,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:19:30,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:19:30,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:19:30,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1305518920, now seen corresponding path program 1 times [2023-03-31 01:19:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:19:30,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59759846] [2023-03-31 01:19:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:19:30,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:19:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 01:19:30,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 01:19:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 01:19:30,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 01:19:30,253 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 01:19:30,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:19:30,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:19:30,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-03-31 01:19:30,260 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 01:19:30,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 01:19:30 BoogieIcfgContainer [2023-03-31 01:19:30,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 01:19:30,275 INFO L158 Benchmark]: Toolchain (without parser) took 739.69ms. Allocated memory is still 285.2MB. Free memory was 236.4MB in the beginning and 248.9MB in the end (delta: -12.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:19:30,275 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 163.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:19:30,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.08ms. Allocated memory is still 285.2MB. Free memory was 236.4MB in the beginning and 226.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 01:19:30,276 INFO L158 Benchmark]: Boogie Preprocessor took 26.21ms. Allocated memory is still 285.2MB. Free memory was 226.6MB in the beginning and 225.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 01:19:30,277 INFO L158 Benchmark]: RCFGBuilder took 263.00ms. Allocated memory is still 285.2MB. Free memory was 225.2MB in the beginning and 215.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 01:19:30,278 INFO L158 Benchmark]: TraceAbstraction took 273.07ms. Allocated memory is still 285.2MB. Free memory was 214.4MB in the beginning and 248.9MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:19:30,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 212.9MB. Free memory is still 163.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.08ms. Allocated memory is still 285.2MB. Free memory was 236.4MB in the beginning and 226.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.21ms. Allocated memory is still 285.2MB. Free memory was 226.6MB in the beginning and 225.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 263.00ms. Allocated memory is still 285.2MB. Free memory was 225.2MB in the beginning and 215.2MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 273.07ms. Allocated memory is still 285.2MB. Free memory was 214.4MB in the beginning and 248.9MB in the end (delta: -34.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 32]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] int x = __VERIFIER_nondet_int(); [L28] CALL, EXPR f91(x) VAL [\old(x)=102] [L18] COND TRUE x > 100 [L19] return x -10; VAL [\old(x)=102, \result=92, x=102] [L28] RET, EXPR f91(x) VAL [f91(x)=92, x=102] [L28] int result = f91(x); [L29] COND FALSE !(result == 91 || x > 102 && result == x - 10) VAL [result=92, x=102] [L32] reach_error() VAL [result=92, x=102] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 01:19:30,300 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...