/usr/lib/jvm/java-1.11.0-openjdk-amd64/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 --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:58:23,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:58:23,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:58:23,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:58:23,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:58:23,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:58:23,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:58:23,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:58:23,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:58:23,990 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:58:23,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:58:23,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:58:23,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:58:23,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:58:23,992 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:58:23,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:58:23,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:58:23,998 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:58:23,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:58:23,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:58:23,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:58:24,000 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:58:24,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:58:24,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:58:24,000 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:58:24,000 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:58:24,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:58:24,001 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:58:24,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:58:24,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:58:24,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:58:24,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:58:24,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:58:24,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:58:24,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:58:24,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:58:24,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:58:24,004 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:58:24,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:58:24,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:58:24,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:58:24,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:58:24,220 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:58:24,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c [2023-12-15 22:58:25,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:58:25,378 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:58:25,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-1.c [2023-12-15 22:58:25,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4589ef05/b745d263020b4415a775df311df6aefd/FLAGb05da2b50 [2023-12-15 22:58:25,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4589ef05/b745d263020b4415a775df311df6aefd [2023-12-15 22:58:25,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:58:25,395 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:58:25,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:58:25,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:58:25,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:58:25,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7badb817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25, skipping insertion in model container [2023-12-15 22:58:25,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,419 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:58:25,525 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-1.c[318,331] [2023-12-15 22:58:25,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:58:25,537 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:58:25,546 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-1.c[318,331] [2023-12-15 22:58:25,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:58:25,559 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:58:25,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25 WrapperNode [2023-12-15 22:58:25,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:58:25,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:58:25,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:58:25,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:58:25,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,579 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2023-12-15 22:58:25,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:58:25,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:58:25,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:58:25,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:58:25,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,601 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 22:58:25,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:58:25,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:58:25,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:58:25,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:58:25,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (1/1) ... [2023-12-15 22:58:25,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:58:25,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:58:25,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 22:58:25,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 22:58:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:58:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-12-15 22:58:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-12-15 22:58:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:58:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:58:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:58:25,693 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:58:25,695 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:58:25,790 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:58:25,803 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:58:25,804 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 22:58:25,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:25 BoogieIcfgContainer [2023-12-15 22:58:25,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:58:25,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:58:25,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:58:25,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:58:25,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:58:25" (1/3) ... [2023-12-15 22:58:25,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f1964c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:25, skipping insertion in model container [2023-12-15 22:58:25,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:58:25" (2/3) ... [2023-12-15 22:58:25,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f1964c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:58:25, skipping insertion in model container [2023-12-15 22:58:25,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:58:25" (3/3) ... [2023-12-15 22:58:25,810 INFO L112 eAbstractionObserver]: Analyzing ICFG afterrec-1.c [2023-12-15 22:58:25,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:58:25,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:58:25,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:58:25,890 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=LoopHeads, 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;@29df71ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:58:25,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:58:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:58:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 22:58:25,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:58:25,902 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-15 22:58:25,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:58:25,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:58:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1625650052, now seen corresponding path program 1 times [2023-12-15 22:58:25,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:58:25,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370198690] [2023-12-15 22:58:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:58:25,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:58:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 22:58:26,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-15 22:58:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 22:58:26,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-15 22:58:26,026 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-15 22:58:26,027 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:58:26,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 22:58:26,031 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-15 22:58:26,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:58:26,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:58:26 BoogieIcfgContainer [2023-12-15 22:58:26,044 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:58:26,045 INFO L158 Benchmark]: Toolchain (without parser) took 649.77ms. Allocated memory is still 191.9MB. Free memory was 142.8MB in the beginning and 106.6MB in the end (delta: 36.3MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,045 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:58:26,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.90ms. Allocated memory is still 191.9MB. Free memory was 142.8MB in the beginning and 132.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.42ms. Allocated memory is still 191.9MB. Free memory was 132.7MB in the beginning and 131.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,052 INFO L158 Benchmark]: Boogie Preprocessor took 25.45ms. Allocated memory is still 191.9MB. Free memory was 131.3MB in the beginning and 130.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,053 INFO L158 Benchmark]: RCFGBuilder took 198.83ms. Allocated memory is still 191.9MB. Free memory was 129.6MB in the beginning and 120.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,053 INFO L158 Benchmark]: TraceAbstraction took 238.22ms. Allocated memory is still 191.9MB. Free memory was 119.8MB in the beginning and 106.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 22:58:26,055 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 146.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.90ms. Allocated memory is still 191.9MB. Free memory was 142.8MB in the beginning and 132.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.42ms. Allocated memory is still 191.9MB. Free memory was 132.7MB in the beginning and 131.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.45ms. Allocated memory is still 191.9MB. Free memory was 131.3MB in the beginning and 130.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.83ms. Allocated memory is still 191.9MB. Free memory was 129.6MB in the beginning and 120.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 238.22ms. Allocated memory is still 191.9MB. Free memory was 119.8MB in the beginning and 106.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. 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: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] CALL f(4) VAL [\old(n)=4] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=4, n=3] [L8] CALL f(n) VAL [\old(n)=3] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=3, n=2] [L8] CALL f(n) VAL [\old(n)=2] [L6] COND TRUE n<3 VAL [\old(n)=2, n=2] [L8] RET f(n) VAL [\old(n)=3, n=2] [L9] reach_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, 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=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 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! [2023-12-15 22:58:26,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...