/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:47:40,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:47:40,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 05:47:40,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:47:40,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:47:40,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:47:40,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:47:40,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:47:40,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:47:40,094 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:47:40,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:47:40,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:47:40,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:47:40,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:47:40,096 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:47:40,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:47:40,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:47:40,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:47:40,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:47:40,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:47:40,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:47:40,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:47:40,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:47:40,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:47:40,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:47:40,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:47:40,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:47:40,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:47:40,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:47:40,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:47:40,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:47:40,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:47:40,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:47:40,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:47:40,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:47:40,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:47:40,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:47:40,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:47:40,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2023-12-16 05:47:41,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:47:41,470 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:47:41,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c [2023-12-16 05:47:41,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a3ff49b0/3582fe35495d4f6b9ec3a3daeba986ed/FLAG4a684e9af [2023-12-16 05:47:41,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a3ff49b0/3582fe35495d4f6b9ec3a3daeba986ed [2023-12-16 05:47:41,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:47:41,494 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:47:41,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:47:41,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:47:41,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:47:41,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7beded5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41, skipping insertion in model container [2023-12-16 05:47:41,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:47:41,630 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/recHanoi03-2.c[769,782] [2023-12-16 05:47:41,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:47:41,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:47:41,656 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/recHanoi03-2.c[769,782] [2023-12-16 05:47:41,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:47:41,667 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:47:41,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41 WrapperNode [2023-12-16 05:47:41,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:47:41,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:47:41,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:47:41,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:47:41,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,689 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-12-16 05:47:41,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:47:41,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:47:41,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:47:41,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:47:41,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,706 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]. [2023-12-16 05:47:41,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:47:41,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:47:41,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:47:41,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:47:41,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (1/1) ... [2023-12-16 05:47:41,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:47:41,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:47:41,757 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) [2023-12-16 05:47:41,772 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 [2023-12-16 05:47:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:47:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-12-16 05:47:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-12-16 05:47:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:47:41,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:47:41,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:47:41,821 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:47:41,823 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:47:41,894 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:47:41,910 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:47:41,910 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 05:47:41,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:47:41 BoogieIcfgContainer [2023-12-16 05:47:41,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:47:41,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:47:41,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:47:41,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:47:41,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:47:41" (1/3) ... [2023-12-16 05:47:41,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc362c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:47:41, skipping insertion in model container [2023-12-16 05:47:41,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:47:41" (2/3) ... [2023-12-16 05:47:41,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dc362c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:47:41, skipping insertion in model container [2023-12-16 05:47:41,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:47:41" (3/3) ... [2023-12-16 05:47:41,915 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2023-12-16 05:47:41,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:47:41,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:47:41,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:47:41,957 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;@79c365d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:47:41,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:47:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2023-12-16 05:47:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 05:47:41,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:47:41,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:47:41,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:47:41,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:47:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1546859687, now seen corresponding path program 1 times [2023-12-16 05:47:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:47:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023322251] [2023-12-16 05:47:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:47:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:47:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:47:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023322251] [2023-12-16 05:47:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023322251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:47:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:47:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 05:47:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381592535] [2023-12-16 05:47:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:47:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 05:47:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:47:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 05:47:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 05:47:42,263 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:47:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:47:42,366 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-16 05:47:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:47:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-16 05:47:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:47:42,372 INFO L225 Difference]: With dead ends: 24 [2023-12-16 05:47:42,372 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 05:47:42,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:47:42,376 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:47:42,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:47:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 05:47:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 05:47:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 05:47:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-16 05:47:42,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2023-12-16 05:47:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:47:42,399 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-16 05:47:42,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 05:47:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-16 05:47:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 05:47:42,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:47:42,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:47:42,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 05:47:42,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:47:42,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:47:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash -797183849, now seen corresponding path program 1 times [2023-12-16 05:47:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:47:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900453111] [2023-12-16 05:47:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:47:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 05:47:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:47:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900453111] [2023-12-16 05:47:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900453111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:47:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265331179] [2023-12-16 05:47:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:47:42,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:47:42,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 05:47:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:42,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 05:47:42,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:47:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 05:47:42,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:47:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 05:47:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265331179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:47:43,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:47:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-12-16 05:47:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030911221] [2023-12-16 05:47:43,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:47:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 05:47:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:47:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 05:47:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-16 05:47:43,159 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 05:47:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:47:43,282 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-12-16 05:47:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 05:47:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 16 [2023-12-16 05:47:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:47:43,284 INFO L225 Difference]: With dead ends: 27 [2023-12-16 05:47:43,284 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 05:47:43,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2023-12-16 05:47:43,286 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:47:43,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:47:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 05:47:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 05:47:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:47:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-12-16 05:47:43,290 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2023-12-16 05:47:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:47:43,290 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-12-16 05:47:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 05:47:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-12-16 05:47:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 05:47:43,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:47:43,291 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:47:43,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 05:47:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:43,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:47:43,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:47:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1671831511, now seen corresponding path program 2 times [2023-12-16 05:47:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:47:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874338775] [2023-12-16 05:47:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:47:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 05:47:43,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:47:43,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874338775] [2023-12-16 05:47:43,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874338775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:47:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621677913] [2023-12-16 05:47:43,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 05:47:43,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:43,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:47:43,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:47:43,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 05:47:43,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 05:47:43,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:47:43,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 05:47:43,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:47:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 05:47:44,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:47:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 05:47:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621677913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:47:44,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:47:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 31 [2023-12-16 05:47:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556641107] [2023-12-16 05:47:44,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:47:44,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 05:47:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:47:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 05:47:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2023-12-16 05:47:44,834 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 21 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 05:47:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:47:45,036 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2023-12-16 05:47:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 05:47:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 21 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) Word has length 28 [2023-12-16 05:47:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:47:45,038 INFO L225 Difference]: With dead ends: 36 [2023-12-16 05:47:45,038 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 05:47:45,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=1457, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 05:47:45,040 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:47:45,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 94 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:47:45,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 05:47:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 05:47:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 05:47:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2023-12-16 05:47:45,050 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 28 [2023-12-16 05:47:45,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:47:45,050 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2023-12-16 05:47:45,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 21 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 9 states have return successors, (12), 10 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-16 05:47:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2023-12-16 05:47:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 05:47:45,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:47:45,051 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:47:45,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 05:47:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-16 05:47:45,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:47:45,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:47:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1245455975, now seen corresponding path program 3 times [2023-12-16 05:47:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:47:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140289165] [2023-12-16 05:47:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:47:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-16 05:47:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:47:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140289165] [2023-12-16 05:47:45,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140289165] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:47:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921788311] [2023-12-16 05:47:45,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 05:47:45,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:47:45,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:47:45,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 05:47:45,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-16 05:47:45,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:47:45,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-16 05:47:45,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:47:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-16 05:47:46,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:47:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 05:47:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921788311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:47:49,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:47:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 46 [2023-12-16 05:47:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819538442] [2023-12-16 05:47:49,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:47:49,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-16 05:47:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:47:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-16 05:47:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1834, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 05:47:49,395 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 30 states have internal predecessors, (58), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2023-12-16 05:47:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:47:49,898 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2023-12-16 05:47:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-16 05:47:49,899 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 30 states have internal predecessors, (58), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) Word has length 46 [2023-12-16 05:47:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:47:49,901 INFO L225 Difference]: With dead ends: 54 [2023-12-16 05:47:49,901 INFO L226 Difference]: Without dead ends: 48 [2023-12-16 05:47:49,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=646, Invalid=4046, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 05:47:49,903 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 05:47:49,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 205 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 05:47:49,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-16 05:47:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-16 05:47:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 05:47:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2023-12-16 05:47:49,911 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2023-12-16 05:47:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:47:49,912 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2023-12-16 05:47:49,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 30 states have internal predecessors, (58), 9 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (21), 16 states have call predecessors, (21), 9 states have call successors, (21) [2023-12-16 05:47:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2023-12-16 05:47:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 05:47:49,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:47:49,916 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:47:49,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 05:47:50,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:50,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:47:50,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:47:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash -828786649, now seen corresponding path program 4 times [2023-12-16 05:47:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:47:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100572084] [2023-12-16 05:47:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:47:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:47:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:47:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:47:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-16 05:47:51,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:47:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100572084] [2023-12-16 05:47:51,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100572084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:47:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806657337] [2023-12-16 05:47:51,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 05:47:51,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:47:51,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:47:51,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:47:51,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 05:47:51,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 05:47:51,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:47:51,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-16 05:47:51,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:47:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-16 05:47:52,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:48:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 05:48:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806657337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:48:14,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:48:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 76 [2023-12-16 05:48:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117992659] [2023-12-16 05:48:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:48:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-16 05:48:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:48:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-16 05:48:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=5134, Unknown=0, NotChecked=0, Total=5700 [2023-12-16 05:48:14,040 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 76 states, 76 states have (on average 1.236842105263158) internal successors, (94), 48 states have internal predecessors, (94), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2023-12-16 05:48:15,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:48:15,602 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2023-12-16 05:48:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 05:48:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.236842105263158) internal successors, (94), 48 states have internal predecessors, (94), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) Word has length 82 [2023-12-16 05:48:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:48:15,609 INFO L225 Difference]: With dead ends: 90 [2023-12-16 05:48:15,609 INFO L226 Difference]: Without dead ends: 84 [2023-12-16 05:48:15,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3024 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1894, Invalid=13112, Unknown=0, NotChecked=0, Total=15006 [2023-12-16 05:48:15,613 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 264 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 05:48:15,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 554 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 05:48:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-16 05:48:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-16 05:48:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 05:48:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2023-12-16 05:48:15,632 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2023-12-16 05:48:15,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:48:15,632 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2023-12-16 05:48:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.236842105263158) internal successors, (94), 48 states have internal predecessors, (94), 15 states have call successors, (15), 1 states have call predecessors, (15), 27 states have return successors, (39), 28 states have call predecessors, (39), 15 states have call successors, (39) [2023-12-16 05:48:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2023-12-16 05:48:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-16 05:48:15,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:48:15,637 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:48:15,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 05:48:15,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:48:15,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:48:15,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:48:15,839 INFO L85 PathProgramCache]: Analyzing trace with hash 479378343, now seen corresponding path program 5 times [2023-12-16 05:48:15,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:48:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049366795] [2023-12-16 05:48:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:48:15,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:48:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:16,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:18,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:48:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:48:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2023-12-16 05:48:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:48:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049366795] [2023-12-16 05:48:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049366795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:48:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164823464] [2023-12-16 05:48:20,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 05:48:20,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:48:20,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:48:20,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:48:20,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 05:48:21,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-16 05:48:21,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 05:48:21,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-16 05:48:21,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:48:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-12-16 05:48:23,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:48:23,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164823464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:48:23,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:48:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [55] total 107 [2023-12-16 05:48:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962927199] [2023-12-16 05:48:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:48:23,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-16 05:48:23,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:48:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-16 05:48:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 05:48:23,845 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 05:48:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:48:24,004 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2023-12-16 05:48:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 05:48:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) Word has length 154 [2023-12-16 05:48:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:48:24,005 INFO L225 Difference]: With dead ends: 84 [2023-12-16 05:48:24,005 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 05:48:24,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=793, Invalid=10549, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 05:48:24,008 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:48:24,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 501 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:48:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 05:48:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 05:48:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-12-16 05:48:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 05:48:24,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2023-12-16 05:48:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:48:24,010 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 05:48:24,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 29 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-16 05:48:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 05:48:24,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 05:48:24,012 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:48:24,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 05:48:24,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:48:24,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 23) the Hoare annotation is: true [2023-12-16 05:48:24,222 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 36) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (<= |ULTIMATE.start_main_~n~0#1| 31) [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L31-1(line 31) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2023-12-16 05:48:24,222 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 37) no Hoare annotation was computed. [2023-12-16 05:48:24,223 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2023-12-16 05:48:24,223 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 05:48:24,223 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2023-12-16 05:48:24,225 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-12-16 05:48:24,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:48:24,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:48:24 BoogieIcfgContainer [2023-12-16 05:48:24,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:48:24,228 INFO L158 Benchmark]: Toolchain (without parser) took 42734.75ms. Allocated memory was 237.0MB in the beginning and 629.1MB in the end (delta: 392.2MB). Free memory was 192.4MB in the beginning and 214.2MB in the end (delta: -21.8MB). Peak memory consumption was 371.4MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.96ms. Allocated memory is still 237.0MB. Free memory was 192.4MB in the beginning and 181.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.31ms. Allocated memory is still 237.0MB. Free memory was 181.9MB in the beginning and 180.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: Boogie Preprocessor took 31.55ms. Allocated memory is still 237.0MB. Free memory was 180.3MB in the beginning and 178.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: RCFGBuilder took 185.96ms. Allocated memory is still 237.0MB. Free memory was 178.7MB in the beginning and 168.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,229 INFO L158 Benchmark]: TraceAbstraction took 42316.47ms. Allocated memory was 237.0MB in the beginning and 629.1MB in the end (delta: 392.2MB). Free memory was 167.7MB in the beginning and 214.2MB in the end (delta: -46.4MB). Peak memory consumption was 347.3MB. Max. memory is 8.0GB. [2023-12-16 05:48:24,230 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 197.1MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.96ms. Allocated memory is still 237.0MB. Free memory was 192.4MB in the beginning and 181.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.31ms. Allocated memory is still 237.0MB. Free memory was 181.9MB in the beginning and 180.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.55ms. Allocated memory is still 237.0MB. Free memory was 180.3MB in the beginning and 178.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 185.96ms. Allocated memory is still 237.0MB. Free memory was 178.7MB in the beginning and 168.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 42316.47ms. Allocated memory was 237.0MB in the beginning and 629.1MB in the end (delta: 392.2MB). Free memory was 167.7MB in the beginning and 214.2MB in the end (delta: -46.4MB). Peak memory consumption was 347.3MB. 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 - PositiveResult [Line: 35]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.3s, OverallIterations: 6, TraceHistogramMax: 25, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 409 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 358 mSDsluCounter, 1435 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1319 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2233 IncrementalHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 116 mSDtfsCounter, 2233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 802 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5153 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=5, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 7 HoareAnnotationTreeSize, 5 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.7s InterpolantComputationTime, 662 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 3457 SizeOfPredicates, 36 NumberOfNonLiveVariables, 864 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 3280/5280 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! [2023-12-16 05:48:24,256 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...