/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/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:13:56,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:13:56,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:13:56,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:13:56,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:13:56,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:13:56,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:13:56,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:13:56,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:13:56,588 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:13:56,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:13:56,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:13:56,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:13:56,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:13:56,590 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:13:56,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:13:56,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:13:56,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:13:56,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:13:56,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:13:56,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:13:56,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:13:56,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:13:56,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:13:56,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:13:56,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:13:56,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:13:56,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:13:56,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:13:56,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:13:56,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:13:56,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:13:56,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:13:56,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:13:56,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:13:56,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:13:56,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:13:56,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:13:56,801 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:13:56,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-21 10:13:57,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:13:57,913 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:13:57,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2023-12-21 10:13:57,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281d644c2/da9eb2484a4e4024af620accf20f0bfd/FLAG178fcaad1 [2023-12-21 10:13:57,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281d644c2/da9eb2484a4e4024af620accf20f0bfd [2023-12-21 10:13:57,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:13:57,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:13:57,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:13:57,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:13:57,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:13:57,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:13:57" (1/1) ... [2023-12-21 10:13:57,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63238bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:57, skipping insertion in model container [2023-12-21 10:13:57,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:13:57" (1/1) ... [2023-12-21 10:13:58,011 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:13:58,148 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/EvenOdd01-1.c[975,988] [2023-12-21 10:13:58,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:13:58,162 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:13:58,176 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/EvenOdd01-1.c[975,988] [2023-12-21 10:13:58,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:13:58,188 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:13:58,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58 WrapperNode [2023-12-21 10:13:58,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:13:58,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:13:58,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:13:58,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:13:58,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,214 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-12-21 10:13:58,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:13:58,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:13:58,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:13:58,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:13:58,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,236 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]. [2023-12-21 10:13:58,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:13:58,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:13:58,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:13:58,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:13:58,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (1/1) ... [2023-12-21 10:13:58,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:13:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:13:58,286 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) [2023-12-21 10:13:58,304 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 [2023-12-21 10:13:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:13:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2023-12-21 10:13:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2023-12-21 10:13:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:13:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2023-12-21 10:13:58,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2023-12-21 10:13:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:13:58,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:13:58,360 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:13:58,361 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:13:58,464 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:13:58,484 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:13:58,484 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 10:13:58,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:13:58 BoogieIcfgContainer [2023-12-21 10:13:58,485 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:13:58,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:13:58,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:13:58,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:13:58,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:13:57" (1/3) ... [2023-12-21 10:13:58,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32767660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:13:58, skipping insertion in model container [2023-12-21 10:13:58,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:58" (2/3) ... [2023-12-21 10:13:58,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32767660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:13:58, skipping insertion in model container [2023-12-21 10:13:58,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:13:58" (3/3) ... [2023-12-21 10:13:58,490 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2023-12-21 10:13:58,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:13:58,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:13:58,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:13:58,555 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;@196b0012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:13:58,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:13:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 10:13:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 10:13:58,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:13:58,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:13:58,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:13:58,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:13:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1415048223, now seen corresponding path program 1 times [2023-12-21 10:13:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:13:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466185152] [2023-12-21 10:13:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:13:58,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:13:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:13:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:13:59,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:13:59,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466185152] [2023-12-21 10:13:59,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466185152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:13:59,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:13:59,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:13:59,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480266949] [2023-12-21 10:13:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:13:59,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:13:59,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:13:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:13:59,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:13:59,245 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2023-12-21 10:13:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:13:59,312 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-12-21 10:13:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 10:13:59,314 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 [2023-12-21 10:13:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:13:59,322 INFO L225 Difference]: With dead ends: 32 [2023-12-21 10:13:59,322 INFO L226 Difference]: Without dead ends: 23 [2023-12-21 10:13:59,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:13:59,326 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:13:59,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 76 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:13:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-21 10:13:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-21 10:13:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-21 10:13:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 10:13:59,350 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2023-12-21 10:13:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:13:59,351 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 10:13:59,351 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) [2023-12-21 10:13:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 10:13:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 10:13:59,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:13:59,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:13:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 10:13:59,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:13:59,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:13:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash -168268323, now seen corresponding path program 1 times [2023-12-21 10:13:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:13:59,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265501006] [2023-12-21 10:13:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:13:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:13:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:13:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:13:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:13:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265501006] [2023-12-21 10:13:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265501006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:13:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:13:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:13:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6613115] [2023-12-21 10:13:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:13:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:13:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:13:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:13:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:13:59,500 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-12-21 10:13:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:13:59,561 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-12-21 10:13:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:13:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11 [2023-12-21 10:13:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:13:59,563 INFO L225 Difference]: With dead ends: 29 [2023-12-21 10:13:59,563 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 10:13:59,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:13:59,565 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:13:59,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 90 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:13:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 10:13:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-21 10:13:59,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-21 10:13:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 10:13:59,575 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2023-12-21 10:13:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:13:59,576 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 10:13:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-12-21 10:13:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 10:13:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 10:13:59,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:13:59,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:13:59,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 10:13:59,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:13:59,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:13:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash 236008797, now seen corresponding path program 1 times [2023-12-21 10:13:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:13:59,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166044118] [2023-12-21 10:13:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:13:59,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:13:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:13:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:13:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:13:59,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:13:59,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166044118] [2023-12-21 10:13:59,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166044118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:13:59,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:13:59,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:13:59,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119918241] [2023-12-21 10:13:59,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:13:59,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:13:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:13:59,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:13:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:13:59,671 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:13:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:13:59,695 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-12-21 10:13:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:13:59,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-21 10:13:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:13:59,700 INFO L225 Difference]: With dead ends: 37 [2023-12-21 10:13:59,700 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 10:13:59,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:13:59,701 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:13:59,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 62 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:13:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 10:13:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-12-21 10:13:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-21 10:13:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-21 10:13:59,705 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2023-12-21 10:13:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:13:59,705 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-21 10:13:59,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:13:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-21 10:13:59,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 10:13:59,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:13:59,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:13:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 10:13:59,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:13:59,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:13:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1342568457, now seen corresponding path program 1 times [2023-12-21 10:13:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:13:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852368438] [2023-12-21 10:13:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:13:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:13:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:13:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:13:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:13:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:13:59,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:13:59,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852368438] [2023-12-21 10:13:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852368438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:13:59,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:13:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 10:13:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235833310] [2023-12-21 10:13:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:13:59,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 10:13:59,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:13:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 10:13:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:13:59,971 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:14:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:00,053 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2023-12-21 10:14:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:14:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-21 10:14:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:00,054 INFO L225 Difference]: With dead ends: 32 [2023-12-21 10:14:00,054 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 10:14:00,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:14:00,062 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:00,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 75 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 10:14:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-21 10:14:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 10:14:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-21 10:14:00,066 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-12-21 10:14:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:00,066 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-21 10:14:00,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 10:14:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-21 10:14:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 10:14:00,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:00,067 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 10:14:00,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:00,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash -246412613, now seen corresponding path program 1 times [2023-12-21 10:14:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:00,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119499476] [2023-12-21 10:14:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 10:14:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119499476] [2023-12-21 10:14:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119499476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:14:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:14:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:14:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791766872] [2023-12-21 10:14:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:14:00,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:14:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:00,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:14:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:14:00,134 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 10:14:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:00,161 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-12-21 10:14:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:14:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-12-21 10:14:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:00,163 INFO L225 Difference]: With dead ends: 38 [2023-12-21 10:14:00,163 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 10:14:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:14:00,164 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:00,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:14:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 10:14:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 10:14:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 10:14:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-21 10:14:00,172 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 24 [2023-12-21 10:14:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:00,172 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-21 10:14:00,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 10:14:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-21 10:14:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-21 10:14:00,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:00,174 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 10:14:00,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:00,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash -962722745, now seen corresponding path program 1 times [2023-12-21 10:14:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:00,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111991006] [2023-12-21 10:14:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 10:14:00,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111991006] [2023-12-21 10:14:00,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111991006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224080683] [2023-12-21 10:14:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:00,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:00,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:00,496 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) [2023-12-21 10:14:00,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 10:14:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:00,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 10:14:00,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 10:14:00,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 10:14:01,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224080683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:01,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:01,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2023-12-21 10:14:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509973184] [2023-12-21 10:14:01,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:01,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 10:14:01,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 10:14:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-12-21 10:14:01,122 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 10:14:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:01,259 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-12-21 10:14:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 10:14:01,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 25 [2023-12-21 10:14:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:01,261 INFO L225 Difference]: With dead ends: 38 [2023-12-21 10:14:01,261 INFO L226 Difference]: Without dead ends: 34 [2023-12-21 10:14:01,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-12-21 10:14:01,262 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:01,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 112 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:01,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-21 10:14:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-12-21 10:14:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-21 10:14:01,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-12-21 10:14:01,272 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-12-21 10:14:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:01,272 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-12-21 10:14:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-21 10:14:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-12-21 10:14:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 10:14:01,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:01,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:01,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:01,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-21 10:14:01,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:01,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -503357871, now seen corresponding path program 1 times [2023-12-21 10:14:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:01,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519494677] [2023-12-21 10:14:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:01,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 10:14:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519494677] [2023-12-21 10:14:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519494677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152664858] [2023-12-21 10:14:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:01,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:01,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:01,736 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) [2023-12-21 10:14:01,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 10:14:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:01,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 10:14:01,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 10:14:01,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 10:14:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152664858] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:02,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2023-12-21 10:14:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514051956] [2023-12-21 10:14:02,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 10:14:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 10:14:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-12-21 10:14:02,333 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-21 10:14:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:02,561 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-12-21 10:14:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 10:14:02,562 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 32 [2023-12-21 10:14:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:02,563 INFO L225 Difference]: With dead ends: 44 [2023-12-21 10:14:02,563 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 10:14:02,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 10:14:02,564 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:02,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 155 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 10:14:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2023-12-21 10:14:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-21 10:14:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-21 10:14:02,570 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 32 [2023-12-21 10:14:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:02,570 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-21 10:14:02,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 17 states have internal predecessors, (40), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-21 10:14:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-21 10:14:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 10:14:02,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:02,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:02,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 10:14:02,780 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,SelfDestructingSolverStorable6 [2023-12-21 10:14:02,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:02,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1867179313, now seen corresponding path program 2 times [2023-12-21 10:14:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458240953] [2023-12-21 10:14:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 10:14:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458240953] [2023-12-21 10:14:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458240953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401882946] [2023-12-21 10:14:03,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:03,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:03,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:03,242 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) [2023-12-21 10:14:03,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 10:14:03,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:03,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:03,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 10:14:03,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 10:14:03,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 10:14:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401882946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:03,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2023-12-21 10:14:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862861050] [2023-12-21 10:14:03,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 10:14:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 10:14:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-12-21 10:14:03,885 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-12-21 10:14:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:04,140 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-12-21 10:14:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 10:14:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) Word has length 39 [2023-12-21 10:14:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:04,141 INFO L225 Difference]: With dead ends: 50 [2023-12-21 10:14:04,141 INFO L226 Difference]: Without dead ends: 46 [2023-12-21 10:14:04,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1243, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 10:14:04,142 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:04,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 194 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:14:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-21 10:14:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2023-12-21 10:14:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 10:14:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-21 10:14:04,145 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 39 [2023-12-21 10:14:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:04,146 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-21 10:14:04,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 20 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 9 states have call successors, (11) [2023-12-21 10:14:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-21 10:14:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-21 10:14:04,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:04,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:04,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 10:14:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:04,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:04,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2003597525, now seen corresponding path program 2 times [2023-12-21 10:14:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781564362] [2023-12-21 10:14:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:14:04,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:04,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781564362] [2023-12-21 10:14:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781564362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:04,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921629992] [2023-12-21 10:14:04,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:04,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:04,720 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) [2023-12-21 10:14:04,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 10:14:04,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:04,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:04,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 10:14:04,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:14:04,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 10:14:05,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921629992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:05,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2023-12-21 10:14:05,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065402379] [2023-12-21 10:14:05,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:05,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 10:14:05,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 10:14:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-21 10:14:05,500 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 10:14:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:05,848 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2023-12-21 10:14:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 10:14:05,849 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 46 [2023-12-21 10:14:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:05,849 INFO L225 Difference]: With dead ends: 56 [2023-12-21 10:14:05,849 INFO L226 Difference]: Without dead ends: 52 [2023-12-21 10:14:05,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 10:14:05,851 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:05,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 217 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:14:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-21 10:14:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2023-12-21 10:14:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 10:14:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-12-21 10:14:05,854 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 46 [2023-12-21 10:14:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:05,854 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-12-21 10:14:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2023-12-21 10:14:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-12-21 10:14:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 10:14:05,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:05,855 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:05,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:06,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:06,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:06,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash -48123749, now seen corresponding path program 3 times [2023-12-21 10:14:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:06,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441126368] [2023-12-21 10:14:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 10:14:06,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:06,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441126368] [2023-12-21 10:14:06,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441126368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:06,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597541232] [2023-12-21 10:14:06,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:14:06,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:06,778 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) [2023-12-21 10:14:06,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 10:14:06,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 10:14:06,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:06,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 10:14:06,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 10:14:06,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 10:14:07,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597541232] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:07,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:07,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2023-12-21 10:14:07,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706558567] [2023-12-21 10:14:07,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 10:14:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 10:14:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 10:14:07,964 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 10:14:08,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:08,319 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2023-12-21 10:14:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 10:14:08,320 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) Word has length 53 [2023-12-21 10:14:08,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:08,320 INFO L225 Difference]: With dead ends: 62 [2023-12-21 10:14:08,320 INFO L226 Difference]: Without dead ends: 58 [2023-12-21 10:14:08,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 10:14:08,321 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:08,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 251 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:14:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-21 10:14:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2023-12-21 10:14:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:14:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-12-21 10:14:08,325 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 53 [2023-12-21 10:14:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:08,325 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-12-21 10:14:08,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.75) internal successors, (56), 24 states have internal predecessors, (56), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (15), 10 states have call predecessors, (15), 11 states have call successors, (15) [2023-12-21 10:14:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-12-21 10:14:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 10:14:08,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:08,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:08,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:08,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 10:14:08,530 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:08,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2001067387, now seen corresponding path program 3 times [2023-12-21 10:14:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768077677] [2023-12-21 10:14:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:08,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-21 10:14:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768077677] [2023-12-21 10:14:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768077677] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929985087] [2023-12-21 10:14:09,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:14:09,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:09,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:09,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 10:14:09,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 10:14:09,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:09,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-21 10:14:09,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 10:14:09,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 10:14:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929985087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:10,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 27] total 36 [2023-12-21 10:14:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718689147] [2023-12-21 10:14:10,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-21 10:14:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-21 10:14:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 10:14:10,293 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-12-21 10:14:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:10,845 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2023-12-21 10:14:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 10:14:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 60 [2023-12-21 10:14:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:10,846 INFO L225 Difference]: With dead ends: 68 [2023-12-21 10:14:10,846 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 10:14:10,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 10:14:10,848 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:10,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 329 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 10:14:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 10:14:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2023-12-21 10:14:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:14:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-12-21 10:14:10,851 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 60 [2023-12-21 10:14:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:10,852 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-12-21 10:14:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 25 states have internal predecessors, (60), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2023-12-21 10:14:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-12-21 10:14:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 10:14:10,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:10,852 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:10,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:11,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:11,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:11,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1494415739, now seen corresponding path program 4 times [2023-12-21 10:14:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132354486] [2023-12-21 10:14:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 10:14:11,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:11,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132354486] [2023-12-21 10:14:11,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132354486] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:11,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360097164] [2023-12-21 10:14:11,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:14:11,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:11,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:11,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:11,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 10:14:11,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:14:11,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:11,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 10:14:11,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 10:14:11,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 10:14:13,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360097164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:13,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:13,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2023-12-21 10:14:13,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651587838] [2023-12-21 10:14:13,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:13,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-21 10:14:13,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-21 10:14:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 10:14:13,239 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-21 10:14:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:13,837 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-12-21 10:14:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 10:14:13,837 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 67 [2023-12-21 10:14:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:13,838 INFO L225 Difference]: With dead ends: 74 [2023-12-21 10:14:13,838 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 10:14:13,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 10:14:13,839 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:13,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 400 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 10:14:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 10:14:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2023-12-21 10:14:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:14:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2023-12-21 10:14:13,843 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 67 [2023-12-21 10:14:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:13,843 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2023-12-21 10:14:13,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.736842105263158) internal successors, (66), 28 states have internal predecessors, (66), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-21 10:14:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2023-12-21 10:14:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 10:14:13,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:13,844 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:13,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-21 10:14:14,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:14,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:14,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:14,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1411305567, now seen corresponding path program 4 times [2023-12-21 10:14:14,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:14,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635807387] [2023-12-21 10:14:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:14,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 10:14:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635807387] [2023-12-21 10:14:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635807387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385674118] [2023-12-21 10:14:14,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:14:14,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:14,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:14,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:14,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 10:14:14,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:14:14,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:14,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-21 10:14:14,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-21 10:14:15,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 10:14:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385674118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:16,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:16,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 43 [2023-12-21 10:14:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616763040] [2023-12-21 10:14:16,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 10:14:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 10:14:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1665, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 10:14:16,481 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 43 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2023-12-21 10:14:16,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:16,968 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2023-12-21 10:14:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 10:14:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) Word has length 74 [2023-12-21 10:14:16,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:16,969 INFO L225 Difference]: With dead ends: 80 [2023-12-21 10:14:16,969 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 10:14:16,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 10:14:16,976 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:16,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 417 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:14:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 10:14:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 50. [2023-12-21 10:14:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 10:14:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-12-21 10:14:16,986 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 74 [2023-12-21 10:14:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:16,986 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-12-21 10:14:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 30 states have internal predecessors, (71), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2023-12-21 10:14:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-12-21 10:14:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 10:14:16,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:16,987 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:16,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 10:14:17,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 10:14:17,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:17,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1222670609, now seen corresponding path program 5 times [2023-12-21 10:14:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275413220] [2023-12-21 10:14:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:18,134 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-21 10:14:18,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275413220] [2023-12-21 10:14:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275413220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929585983] [2023-12-21 10:14:18,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:14:18,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:18,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:18,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:18,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 10:14:18,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 10:14:18,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:18,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 10:14:18,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-21 10:14:18,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:14:20,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929585983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:20,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2023-12-21 10:14:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557909408] [2023-12-21 10:14:20,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-21 10:14:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-21 10:14:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 10:14:20,127 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2023-12-21 10:14:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:20,667 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2023-12-21 10:14:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 10:14:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) Word has length 81 [2023-12-21 10:14:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:20,671 INFO L225 Difference]: With dead ends: 86 [2023-12-21 10:14:20,671 INFO L226 Difference]: Without dead ends: 82 [2023-12-21 10:14:20,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=382, Invalid=4174, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 10:14:20,674 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:20,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 436 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:14:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-21 10:14:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 53. [2023-12-21 10:14:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 10:14:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-21 10:14:20,685 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 81 [2023-12-21 10:14:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:20,685 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-21 10:14:20,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 32 states have internal predecessors, (76), 15 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (23), 14 states have call predecessors, (23), 15 states have call successors, (23) [2023-12-21 10:14:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-21 10:14:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 10:14:20,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:20,687 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:20,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:20,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-21 10:14:20,892 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:20,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash 51720377, now seen corresponding path program 5 times [2023-12-21 10:14:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927360187] [2023-12-21 10:14:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 10:14:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:21,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927360187] [2023-12-21 10:14:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927360187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:21,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84804184] [2023-12-21 10:14:21,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:14:21,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:21,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:21,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 10:14:22,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-21 10:14:22,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:22,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-21 10:14:22,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-21 10:14:22,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:14:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84804184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:24,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:24,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2023-12-21 10:14:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197253994] [2023-12-21 10:14:24,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 10:14:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 10:14:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 10:14:24,129 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2023-12-21 10:14:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:25,042 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2023-12-21 10:14:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 10:14:25,042 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) Word has length 88 [2023-12-21 10:14:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:25,043 INFO L225 Difference]: With dead ends: 92 [2023-12-21 10:14:25,043 INFO L226 Difference]: Without dead ends: 88 [2023-12-21 10:14:25,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=433, Invalid=4823, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 10:14:25,045 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:25,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 601 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-21 10:14:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2023-12-21 10:14:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 10:14:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-21 10:14:25,061 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 88 [2023-12-21 10:14:25,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:25,061 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-21 10:14:25,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.702127659574468) internal successors, (80), 33 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (25), 15 states have call predecessors, (25), 15 states have call successors, (25) [2023-12-21 10:14:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-21 10:14:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 10:14:25,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:25,062 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:25,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:25,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 10:14:25,267 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:25,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -170667559, now seen corresponding path program 6 times [2023-12-21 10:14:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489423958] [2023-12-21 10:14:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 10:14:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489423958] [2023-12-21 10:14:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489423958] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717998962] [2023-12-21 10:14:26,391 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:14:26,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:26,392 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:26,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 10:14:26,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 10:14:26,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:26,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 112 conjunts are in the unsatisfiable core [2023-12-21 10:14:26,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 10:14:26,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 10:14:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717998962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:28,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:28,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2023-12-21 10:14:28,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664406802] [2023-12-21 10:14:28,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:28,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 10:14:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 10:14:28,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 10:14:28,610 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2023-12-21 10:14:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:29,509 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2023-12-21 10:14:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 10:14:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) Word has length 95 [2023-12-21 10:14:29,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:29,511 INFO L225 Difference]: With dead ends: 98 [2023-12-21 10:14:29,511 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 10:14:29,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=471, Invalid=5535, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 10:14:29,512 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:29,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 651 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 10:14:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2023-12-21 10:14:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 10:14:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-21 10:14:29,516 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 95 [2023-12-21 10:14:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:29,516 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-21 10:14:29,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.72) internal successors, (86), 36 states have internal predecessors, (86), 17 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (27), 16 states have call predecessors, (27), 17 states have call successors, (27) [2023-12-21 10:14:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-21 10:14:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 10:14:29,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:29,517 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:29,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:29,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 10:14:29,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:29,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -291970157, now seen corresponding path program 6 times [2023-12-21 10:14:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:29,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627636348] [2023-12-21 10:14:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-21 10:14:31,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:31,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627636348] [2023-12-21 10:14:31,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627636348] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:31,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41456515] [2023-12-21 10:14:31,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:14:31,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:31,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:31,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:31,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 10:14:31,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-21 10:14:31,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:31,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 120 conjunts are in the unsatisfiable core [2023-12-21 10:14:31,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 10:14:31,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 10:14:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41456515] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:33,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 45] total 54 [2023-12-21 10:14:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296034982] [2023-12-21 10:14:33,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 10:14:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 10:14:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2681, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 10:14:33,598 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 54 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 37 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) [2023-12-21 10:14:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:34,519 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2023-12-21 10:14:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 10:14:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 37 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) Word has length 102 [2023-12-21 10:14:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:34,520 INFO L225 Difference]: With dead ends: 104 [2023-12-21 10:14:34,520 INFO L226 Difference]: Without dead ends: 100 [2023-12-21 10:14:34,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=528, Invalid=6278, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 10:14:34,522 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 45 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:34,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 574 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-21 10:14:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 62. [2023-12-21 10:14:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 10:14:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-12-21 10:14:34,525 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 102 [2023-12-21 10:14:34,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:34,525 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-12-21 10:14:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 37 states have internal predecessors, (90), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (29), 17 states have call predecessors, (29), 17 states have call successors, (29) [2023-12-21 10:14:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-12-21 10:14:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 10:14:34,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:34,526 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:34,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 10:14:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 10:14:34,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:34,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1832089789, now seen corresponding path program 7 times [2023-12-21 10:14:34,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:34,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952505881] [2023-12-21 10:14:34,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:34,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:34,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-21 10:14:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:36,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952505881] [2023-12-21 10:14:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952505881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:36,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459386586] [2023-12-21 10:14:36,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:14:36,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:36,964 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:37,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 10:14:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:37,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 128 conjunts are in the unsatisfiable core [2023-12-21 10:14:37,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-12-21 10:14:37,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 10:14:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459386586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:39,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2023-12-21 10:14:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591150386] [2023-12-21 10:14:39,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 10:14:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 10:14:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 10:14:39,517 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2023-12-21 10:14:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:40,625 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-12-21 10:14:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 10:14:40,626 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) Word has length 109 [2023-12-21 10:14:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:40,626 INFO L225 Difference]: With dead ends: 110 [2023-12-21 10:14:40,626 INFO L226 Difference]: Without dead ends: 106 [2023-12-21 10:14:40,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=568, Invalid=7088, Unknown=0, NotChecked=0, Total=7656 [2023-12-21 10:14:40,628 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 67 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:40,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 659 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:14:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-21 10:14:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 65. [2023-12-21 10:14:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 10:14:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-21 10:14:40,631 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 109 [2023-12-21 10:14:40,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:40,631 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-21 10:14:40,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7142857142857142) internal successors, (96), 40 states have internal predecessors, (96), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (31), 18 states have call predecessors, (31), 19 states have call successors, (31) [2023-12-21 10:14:40,631 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-21 10:14:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 10:14:40,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:40,632 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:40,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 10:14:40,833 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:40,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash -900888339, now seen corresponding path program 7 times [2023-12-21 10:14:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:40,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285409274] [2023-12-21 10:14:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:40,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-21 10:14:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285409274] [2023-12-21 10:14:42,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285409274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071773622] [2023-12-21 10:14:42,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:14:42,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:42,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:42,470 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:42,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 10:14:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:42,620 WARN L260 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-21 10:14:42,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-21 10:14:42,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 10:14:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071773622] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:45,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:45,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 51] total 61 [2023-12-21 10:14:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217379954] [2023-12-21 10:14:45,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:45,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-21 10:14:45,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-21 10:14:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=3453, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 10:14:45,063 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 61 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 42 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) [2023-12-21 10:14:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:46,149 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2023-12-21 10:14:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 10:14:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 42 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) Word has length 116 [2023-12-21 10:14:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:46,150 INFO L225 Difference]: With dead ends: 116 [2023-12-21 10:14:46,150 INFO L226 Difference]: Without dead ends: 112 [2023-12-21 10:14:46,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=636, Invalid=8106, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 10:14:46,151 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 56 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:46,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 908 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:14:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-21 10:14:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 68. [2023-12-21 10:14:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 10:14:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-12-21 10:14:46,155 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 116 [2023-12-21 10:14:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:46,155 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-12-21 10:14:46,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 42 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (33), 19 states have call predecessors, (33), 20 states have call successors, (33) [2023-12-21 10:14:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-12-21 10:14:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 10:14:46,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:46,156 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:46,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 10:14:46,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:46,357 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1888205011, now seen corresponding path program 8 times [2023-12-21 10:14:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:46,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389603441] [2023-12-21 10:14:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:48,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-21 10:14:48,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389603441] [2023-12-21 10:14:48,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389603441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:48,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318510000] [2023-12-21 10:14:48,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:48,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:48,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:48,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:48,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 10:14:48,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:48,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:48,256 WARN L260 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 144 conjunts are in the unsatisfiable core [2023-12-21 10:14:48,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-21 10:14:48,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 10:14:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318510000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:51,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2023-12-21 10:14:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182286817] [2023-12-21 10:14:51,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-21 10:14:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-21 10:14:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 10:14:51,665 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2023-12-21 10:14:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:52,552 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2023-12-21 10:14:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 10:14:52,553 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) Word has length 123 [2023-12-21 10:14:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:52,554 INFO L225 Difference]: With dead ends: 122 [2023-12-21 10:14:52,554 INFO L226 Difference]: Without dead ends: 118 [2023-12-21 10:14:52,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=673, Invalid=8833, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 10:14:52,556 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 77 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:52,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 771 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 10:14:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-21 10:14:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 71. [2023-12-21 10:14:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 10:14:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-12-21 10:14:52,559 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 123 [2023-12-21 10:14:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:52,559 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-12-21 10:14:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 44 states have internal predecessors, (106), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 20 states have call predecessors, (35), 21 states have call successors, (35) [2023-12-21 10:14:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-12-21 10:14:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 10:14:52,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:52,560 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:52,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 10:14:52,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:52,768 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:52,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1048494279, now seen corresponding path program 8 times [2023-12-21 10:14:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992713122] [2023-12-21 10:14:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:14:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-21 10:14:54,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:14:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992713122] [2023-12-21 10:14:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992713122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:14:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880703361] [2023-12-21 10:14:54,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:14:54,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:54,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:14:54,722 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:14:54,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 10:14:54,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:14:54,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:14:54,867 WARN L260 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 152 conjunts are in the unsatisfiable core [2023-12-21 10:14:54,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:14:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-21 10:14:55,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:14:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 10:14:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880703361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:14:58,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:14:58,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 57] total 66 [2023-12-21 10:14:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114703844] [2023-12-21 10:14:58,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:14:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-21 10:14:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:14:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-21 10:14:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=4065, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 10:14:58,326 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 66 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) [2023-12-21 10:14:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:14:59,499 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2023-12-21 10:14:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 10:14:59,499 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) Word has length 130 [2023-12-21 10:14:59,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:14:59,500 INFO L225 Difference]: With dead ends: 128 [2023-12-21 10:14:59,500 INFO L226 Difference]: Without dead ends: 124 [2023-12-21 10:14:59,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=742, Invalid=9764, Unknown=0, NotChecked=0, Total=10506 [2023-12-21 10:14:59,518 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:14:59,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1018 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:14:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-21 10:14:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2023-12-21 10:14:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 10:14:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-12-21 10:14:59,540 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 130 [2023-12-21 10:14:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:14:59,540 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-12-21 10:14:59,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.6923076923076923) internal successors, (110), 45 states have internal predecessors, (110), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (37), 21 states have call predecessors, (37), 21 states have call successors, (37) [2023-12-21 10:14:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-12-21 10:14:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 10:14:59,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:14:59,541 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:14:59,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 10:14:59,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:14:59,746 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:14:59,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:14:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1461866089, now seen corresponding path program 9 times [2023-12-21 10:14:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:14:59,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055447107] [2023-12-21 10:14:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:14:59,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:14:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:14:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:14:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-21 10:15:01,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055447107] [2023-12-21 10:15:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055447107] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649940704] [2023-12-21 10:15:01,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:15:01,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:01,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:01,905 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:01,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 10:15:02,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 10:15:02,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:02,077 WARN L260 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 160 conjunts are in the unsatisfiable core [2023-12-21 10:15:02,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-21 10:15:02,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 10:15:05,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649940704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:05,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:05,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2023-12-21 10:15:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084910876] [2023-12-21 10:15:05,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 10:15:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 10:15:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 10:15:05,658 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2023-12-21 10:15:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:06,721 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2023-12-21 10:15:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 10:15:06,722 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) Word has length 137 [2023-12-21 10:15:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:06,724 INFO L225 Difference]: With dead ends: 134 [2023-12-21 10:15:06,724 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 10:15:06,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=786, Invalid=10770, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 10:15:06,735 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 117 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1067 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:15:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 10:15:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 77. [2023-12-21 10:15:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2023-12-21 10:15:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-12-21 10:15:06,747 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 137 [2023-12-21 10:15:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:06,747 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-12-21 10:15:06,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7058823529411764) internal successors, (116), 48 states have internal predecessors, (116), 23 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (39), 22 states have call predecessors, (39), 23 states have call successors, (39) [2023-12-21 10:15:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-12-21 10:15:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 10:15:06,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:06,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:06,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:06,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:06,955 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:06,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 35662625, now seen corresponding path program 9 times [2023-12-21 10:15:06,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:06,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476011988] [2023-12-21 10:15:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:06,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:08,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-21 10:15:09,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476011988] [2023-12-21 10:15:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476011988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75203469] [2023-12-21 10:15:09,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:15:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:09,451 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:09,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 10:15:09,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-12-21 10:15:09,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:09,621 WARN L260 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 168 conjunts are in the unsatisfiable core [2023-12-21 10:15:09,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2023-12-21 10:15:09,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 10:15:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75203469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:14,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 63] total 72 [2023-12-21 10:15:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366438727] [2023-12-21 10:15:14,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-21 10:15:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-21 10:15:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2023-12-21 10:15:14,013 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2023-12-21 10:15:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:15,634 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2023-12-21 10:15:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 10:15:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) Word has length 144 [2023-12-21 10:15:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:15,635 INFO L225 Difference]: With dead ends: 140 [2023-12-21 10:15:15,635 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 10:15:15,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=861, Invalid=11795, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 10:15:15,636 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:15,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 959 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:15:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 10:15:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2023-12-21 10:15:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-12-21 10:15:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2023-12-21 10:15:15,639 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 144 [2023-12-21 10:15:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:15,639 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2023-12-21 10:15:15,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 49 states have internal predecessors, (120), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2023-12-21 10:15:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2023-12-21 10:15:15,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 10:15:15,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:15,640 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:15,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:15,841 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1044158847, now seen corresponding path program 10 times [2023-12-21 10:15:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570740896] [2023-12-21 10:15:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-12-21 10:15:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570740896] [2023-12-21 10:15:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570740896] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415438567] [2023-12-21 10:15:18,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:15:18,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:18,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:18,484 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:18,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 10:15:18,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:15:18,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:18,675 WARN L260 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 176 conjunts are in the unsatisfiable core [2023-12-21 10:15:18,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-12-21 10:15:18,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 10:15:22,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415438567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:22,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:22,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2023-12-21 10:15:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405109777] [2023-12-21 10:15:22,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:22,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-21 10:15:22,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-21 10:15:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 10:15:22,804 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2023-12-21 10:15:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:23,999 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions. [2023-12-21 10:15:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 10:15:23,999 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) Word has length 151 [2023-12-21 10:15:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:24,000 INFO L225 Difference]: With dead ends: 146 [2023-12-21 10:15:24,000 INFO L226 Difference]: Without dead ends: 142 [2023-12-21 10:15:24,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=907, Invalid=12899, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 10:15:24,002 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 157 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1084 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:15:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-21 10:15:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 83. [2023-12-21 10:15:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-21 10:15:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2023-12-21 10:15:24,023 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 151 [2023-12-21 10:15:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2023-12-21 10:15:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7027027027027026) internal successors, (126), 52 states have internal predecessors, (126), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (43), 24 states have call predecessors, (43), 25 states have call successors, (43) [2023-12-21 10:15:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2023-12-21 10:15:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 10:15:24,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:24,024 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:24,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:24,226 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:24,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1959618555, now seen corresponding path program 10 times [2023-12-21 10:15:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:24,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965322262] [2023-12-21 10:15:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:24,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:24,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-12-21 10:15:27,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965322262] [2023-12-21 10:15:27,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965322262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908359829] [2023-12-21 10:15:27,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:15:27,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:27,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:27,084 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:27,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 10:15:27,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:15:27,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:27,302 WARN L260 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 184 conjunts are in the unsatisfiable core [2023-12-21 10:15:27,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-21 10:15:27,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-21 10:15:32,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908359829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:32,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:32,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2023-12-21 10:15:32,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651227866] [2023-12-21 10:15:32,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:32,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-12-21 10:15:32,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-12-21 10:15:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=5737, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 10:15:32,511 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2023-12-21 10:15:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:34,179 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2023-12-21 10:15:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 10:15:34,179 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) Word has length 158 [2023-12-21 10:15:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:34,180 INFO L225 Difference]: With dead ends: 152 [2023-12-21 10:15:34,180 INFO L226 Difference]: Without dead ends: 148 [2023-12-21 10:15:34,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=988, Invalid=14018, Unknown=0, NotChecked=0, Total=15006 [2023-12-21 10:15:34,181 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:34,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1575 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:15:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-21 10:15:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2023-12-21 10:15:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 24 states have call predecessors, (25), 3 states have call successors, (25) [2023-12-21 10:15:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2023-12-21 10:15:34,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 158 [2023-12-21 10:15:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:34,184 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2023-12-21 10:15:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 53 states have internal predecessors, (130), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (45), 25 states have call predecessors, (45), 25 states have call successors, (45) [2023-12-21 10:15:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2023-12-21 10:15:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 10:15:34,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:34,185 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:34,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 10:15:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 10:15:34,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -863500821, now seen corresponding path program 11 times [2023-12-21 10:15:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502729260] [2023-12-21 10:15:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-21 10:15:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:37,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502729260] [2023-12-21 10:15:37,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502729260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:37,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301459223] [2023-12-21 10:15:37,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:15:37,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:37,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:37,684 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:37,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 10:15:37,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-21 10:15:37,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:37,929 WARN L260 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 10:15:37,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2023-12-21 10:15:38,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-21 10:15:42,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301459223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:42,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:42,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2023-12-21 10:15:42,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113521415] [2023-12-21 10:15:42,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:42,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-12-21 10:15:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-12-21 10:15:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2023-12-21 10:15:42,599 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2023-12-21 10:15:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:44,141 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions. [2023-12-21 10:15:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-21 10:15:44,142 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) Word has length 165 [2023-12-21 10:15:44,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:44,142 INFO L225 Difference]: With dead ends: 158 [2023-12-21 10:15:44,142 INFO L226 Difference]: Without dead ends: 154 [2023-12-21 10:15:44,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1036, Invalid=15220, Unknown=0, NotChecked=0, Total=16256 [2023-12-21 10:15:44,144 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 201 mSDsluCounter, 1446 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:44,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1479 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:15:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-21 10:15:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 89. [2023-12-21 10:15:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2023-12-21 10:15:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2023-12-21 10:15:44,148 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 165 [2023-12-21 10:15:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:44,148 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2023-12-21 10:15:44,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 56 states have internal predecessors, (136), 27 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (47), 26 states have call predecessors, (47), 27 states have call successors, (47) [2023-12-21 10:15:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2023-12-21 10:15:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 10:15:44,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:44,149 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:44,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 10:15:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 10:15:44,350 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:44,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1194715307, now seen corresponding path program 11 times [2023-12-21 10:15:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190145553] [2023-12-21 10:15:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:45,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:45,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-21 10:15:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:47,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190145553] [2023-12-21 10:15:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190145553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011457423] [2023-12-21 10:15:47,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:15:47,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:47,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:47,784 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:47,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 10:15:48,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-21 10:15:48,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:48,064 WARN L260 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 200 conjunts are in the unsatisfiable core [2023-12-21 10:15:48,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-12-21 10:15:48,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:15:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-21 10:15:52,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011457423] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:15:52,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:15:52,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2023-12-21 10:15:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097067207] [2023-12-21 10:15:52,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:15:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-21 10:15:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:15:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-21 10:15:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=6681, Unknown=0, NotChecked=0, Total=6972 [2023-12-21 10:15:52,855 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2023-12-21 10:15:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:15:54,512 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2023-12-21 10:15:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 10:15:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) Word has length 172 [2023-12-21 10:15:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:15:54,513 INFO L225 Difference]: With dead ends: 164 [2023-12-21 10:15:54,513 INFO L226 Difference]: Without dead ends: 160 [2023-12-21 10:15:54,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1123, Invalid=16433, Unknown=0, NotChecked=0, Total=17556 [2023-12-21 10:15:54,516 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:15:54,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1476 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:15:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-21 10:15:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 92. [2023-12-21 10:15:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2023-12-21 10:15:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2023-12-21 10:15:54,519 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 172 [2023-12-21 10:15:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:15:54,519 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2023-12-21 10:15:54,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6867469879518073) internal successors, (140), 57 states have internal predecessors, (140), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (49), 27 states have call predecessors, (49), 27 states have call successors, (49) [2023-12-21 10:15:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2023-12-21 10:15:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 10:15:54,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:15:54,520 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:15:54,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-21 10:15:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 10:15:54,726 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:15:54,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:15:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 892743637, now seen corresponding path program 12 times [2023-12-21 10:15:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:15:54,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641927401] [2023-12-21 10:15:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:15:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:15:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:15:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:15:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:15:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-21 10:15:58,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:15:58,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641927401] [2023-12-21 10:15:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641927401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:15:58,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189755432] [2023-12-21 10:15:58,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:15:58,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:15:58,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:15:58,692 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:15:58,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 10:15:58,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 10:15:58,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:15:58,955 WARN L260 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 208 conjunts are in the unsatisfiable core [2023-12-21 10:15:58,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:15:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-12-21 10:15:59,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:16:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-21 10:16:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189755432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:16:05,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:16:05,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2023-12-21 10:16:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386877705] [2023-12-21 10:16:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:16:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-12-21 10:16:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:16:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-12-21 10:16:05,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2023-12-21 10:16:05,507 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2023-12-21 10:16:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:16:07,333 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2023-12-21 10:16:07,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 10:16:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) Word has length 179 [2023-12-21 10:16:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:16:07,338 INFO L225 Difference]: With dead ends: 170 [2023-12-21 10:16:07,338 INFO L226 Difference]: Without dead ends: 166 [2023-12-21 10:16:07,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1173, Invalid=17733, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 10:16:07,340 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 63 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:16:07,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1674 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:16:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-21 10:16:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 95. [2023-12-21 10:16:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2023-12-21 10:16:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2023-12-21 10:16:07,362 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 179 [2023-12-21 10:16:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:16:07,362 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2023-12-21 10:16:07,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.697674418604651) internal successors, (146), 60 states have internal predecessors, (146), 29 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 28 states have call predecessors, (51), 29 states have call successors, (51) [2023-12-21 10:16:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2023-12-21 10:16:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 10:16:07,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:16:07,364 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:16:07,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-21 10:16:07,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:07,571 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:16:07,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:16:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1291966767, now seen corresponding path program 12 times [2023-12-21 10:16:07,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:16:07,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84626027] [2023-12-21 10:16:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:16:07,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:16:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:16:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:09,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:09,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:16:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:16:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-12-21 10:16:11,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:16:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84626027] [2023-12-21 10:16:11,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84626027] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:16:11,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439337338] [2023-12-21 10:16:11,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:16:11,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:16:11,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:16:11,883 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:16:11,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 10:16:12,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-21 10:16:12,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:16:12,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 164 conjunts are in the unsatisfiable core [2023-12-21 10:16:12,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:16:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-21 10:16:14,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-21 10:17:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439337338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:16,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:16,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 191 [2023-12-21 10:17:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337466129] [2023-12-21 10:17:16,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2023-12-21 10:17:16,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2023-12-21 10:17:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=35500, Unknown=0, NotChecked=0, Total=36290 [2023-12-21 10:17:16,758 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 191 states, 190 states have (on average 1.3210526315789475) internal successors, (251), 113 states have internal predecessors, (251), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) [2023-12-21 10:17:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:17:20,670 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2023-12-21 10:17:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 10:17:20,671 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 1.3210526315789475) internal successors, (251), 113 states have internal predecessors, (251), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) Word has length 186 [2023-12-21 10:17:20,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:17:20,671 INFO L225 Difference]: With dead ends: 176 [2023-12-21 10:17:20,672 INFO L226 Difference]: Without dead ends: 172 [2023-12-21 10:17:20,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12072 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=1820, Invalid=57472, Unknown=0, NotChecked=0, Total=59292 [2023-12-21 10:17:20,679 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 6970 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 6985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:17:20,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3533 Invalid, 6985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 6970 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 10:17:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-21 10:17:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 98. [2023-12-21 10:17:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2023-12-21 10:17:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2023-12-21 10:17:20,683 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 186 [2023-12-21 10:17:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:17:20,683 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-12-21 10:17:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 1.3210526315789475) internal successors, (251), 113 states have internal predecessors, (251), 29 states have call successors, (29), 1 states have call predecessors, (29), 78 states have return successors, (78), 78 states have call predecessors, (78), 29 states have call successors, (78) [2023-12-21 10:17:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2023-12-21 10:17:20,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 10:17:20,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:17:20,684 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:17:20,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 10:17:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 10:17:20,891 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:17:20,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:17:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash -880769985, now seen corresponding path program 13 times [2023-12-21 10:17:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:17:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079426719] [2023-12-21 10:17:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:17:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:17:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:17:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:21,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2023-12-21 10:17:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:17:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079426719] [2023-12-21 10:17:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079426719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:17:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561339260] [2023-12-21 10:17:25,715 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:17:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:17:25,716 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:17:25,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 10:17:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:26,941 WARN L260 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 224 conjunts are in the unsatisfiable core [2023-12-21 10:17:26,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:17:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-12-21 10:17:27,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-21 10:17:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561339260] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:34,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2023-12-21 10:17:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420188275] [2023-12-21 10:17:34,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-12-21 10:17:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:34,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-12-21 10:17:34,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2023-12-21 10:17:34,593 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2023-12-21 10:17:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:17:36,619 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2023-12-21 10:17:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 10:17:36,620 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) Word has length 193 [2023-12-21 10:17:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:17:36,620 INFO L225 Difference]: With dead ends: 182 [2023-12-21 10:17:36,620 INFO L226 Difference]: Without dead ends: 178 [2023-12-21 10:17:36,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1318, Invalid=20438, Unknown=0, NotChecked=0, Total=21756 [2023-12-21 10:17:36,623 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 210 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:17:36,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1899 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 10:17:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-21 10:17:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 101. [2023-12-21 10:17:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2023-12-21 10:17:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2023-12-21 10:17:36,626 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 193 [2023-12-21 10:17:36,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:17:36,632 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2023-12-21 10:17:36,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.6956521739130435) internal successors, (156), 64 states have internal predecessors, (156), 31 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (55), 30 states have call predecessors, (55), 31 states have call successors, (55) [2023-12-21 10:17:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2023-12-21 10:17:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-21 10:17:36,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:17:36,633 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:17:36,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 10:17:36,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:36,842 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:17:36,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:17:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash 654855561, now seen corresponding path program 13 times [2023-12-21 10:17:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:17:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823975885] [2023-12-21 10:17:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:17:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:17:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:17:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:39,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2023-12-21 10:17:42,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:17:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823975885] [2023-12-21 10:17:42,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823975885] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:17:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558067442] [2023-12-21 10:17:42,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:17:42,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:17:42,077 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:17:42,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 10:17:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:43,110 WARN L260 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 232 conjunts are in the unsatisfiable core [2023-12-21 10:17:43,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:17:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-21 10:17:43,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:17:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-21 10:17:50,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558067442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:17:50,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:17:50,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2023-12-21 10:17:50,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987051654] [2023-12-21 10:17:50,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:17:50,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 10:17:50,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:17:50,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 10:17:50,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 10:17:50,122 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2023-12-21 10:17:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:17:52,523 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2023-12-21 10:17:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 10:17:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) Word has length 200 [2023-12-21 10:17:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:17:52,525 INFO L225 Difference]: With dead ends: 188 [2023-12-21 10:17:52,525 INFO L226 Difference]: Without dead ends: 184 [2023-12-21 10:17:52,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2453 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1417, Invalid=21839, Unknown=0, NotChecked=0, Total=23256 [2023-12-21 10:17:52,527 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 58 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 4040 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 4059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:17:52,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 2016 Invalid, 4059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 10:17:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-21 10:17:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 104. [2023-12-21 10:17:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 30 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-21 10:17:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2023-12-21 10:17:52,537 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 200 [2023-12-21 10:17:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:17:52,537 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2023-12-21 10:17:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.6842105263157894) internal successors, (160), 65 states have internal predecessors, (160), 31 states have call successors, (31), 1 states have call predecessors, (31), 29 states have return successors, (57), 31 states have call predecessors, (57), 31 states have call successors, (57) [2023-12-21 10:17:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2023-12-21 10:17:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-21 10:17:52,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:17:52,538 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:17:52,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 10:17:52,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-21 10:17:52,748 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:17:52,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:17:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 750887721, now seen corresponding path program 14 times [2023-12-21 10:17:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:17:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126310884] [2023-12-21 10:17:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:17:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:17:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:17:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:58,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:58,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:17:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:17:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2023-12-21 10:17:58,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:17:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126310884] [2023-12-21 10:17:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126310884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:17:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78564683] [2023-12-21 10:17:58,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:17:58,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:17:58,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:17:58,398 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:17:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 10:17:59,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:17:59,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:17:59,762 WARN L260 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 240 conjunts are in the unsatisfiable core [2023-12-21 10:17:59,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:18:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-12-21 10:18:00,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:18:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-21 10:18:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78564683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:18:07,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:18:07,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2023-12-21 10:18:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103928755] [2023-12-21 10:18:07,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:18:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-12-21 10:18:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:18:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-12-21 10:18:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 10:18:07,117 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2023-12-21 10:18:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:18:09,910 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions. [2023-12-21 10:18:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 10:18:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) Word has length 207 [2023-12-21 10:18:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:18:09,911 INFO L225 Difference]: With dead ends: 194 [2023-12-21 10:18:09,911 INFO L226 Difference]: Without dead ends: 190 [2023-12-21 10:18:09,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1471, Invalid=23335, Unknown=0, NotChecked=0, Total=24806 [2023-12-21 10:18:09,914 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 237 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 3764 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:18:09,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1918 Invalid, 3939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 3764 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 10:18:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-21 10:18:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 107. [2023-12-21 10:18:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 31 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-21 10:18:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2023-12-21 10:18:09,935 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 207 [2023-12-21 10:18:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:18:09,935 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-12-21 10:18:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.6938775510204083) internal successors, (166), 68 states have internal predecessors, (166), 33 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (59), 32 states have call predecessors, (59), 33 states have call successors, (59) [2023-12-21 10:18:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2023-12-21 10:18:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-21 10:18:09,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:18:09,936 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:18:09,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 10:18:10,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:10,137 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:18:10,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:18:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1293489251, now seen corresponding path program 14 times [2023-12-21 10:18:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:18:10,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627717483] [2023-12-21 10:18:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:18:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:18:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:18:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:13,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2023-12-21 10:18:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:18:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627717483] [2023-12-21 10:18:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627717483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:18:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188540918] [2023-12-21 10:18:16,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:18:16,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:16,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:18:16,176 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:18:16,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 10:18:17,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:18:17,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:18:17,318 WARN L260 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 248 conjunts are in the unsatisfiable core [2023-12-21 10:18:17,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:18:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-21 10:18:17,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:18:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-21 10:18:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188540918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:18:27,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:18:27,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 93] total 102 [2023-12-21 10:18:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456646040] [2023-12-21 10:18:27,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:18:27,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-21 10:18:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:18:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-21 10:18:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=9945, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 10:18:27,746 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 102 states, 101 states have (on average 1.683168316831683) internal successors, (170), 69 states have internal predecessors, (170), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) [2023-12-21 10:18:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:18:30,453 INFO L93 Difference]: Finished difference Result 200 states and 202 transitions. [2023-12-21 10:18:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-21 10:18:30,453 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.683168316831683) internal successors, (170), 69 states have internal predecessors, (170), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) Word has length 214 [2023-12-21 10:18:30,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:18:30,455 INFO L225 Difference]: With dead ends: 200 [2023-12-21 10:18:30,455 INFO L226 Difference]: Without dead ends: 196 [2023-12-21 10:18:30,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1576, Invalid=24830, Unknown=0, NotChecked=0, Total=26406 [2023-12-21 10:18:30,458 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 123 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 4169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 4169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:18:30,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2116 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 4169 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 10:18:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-21 10:18:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 110. [2023-12-21 10:18:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.027027027027027) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 32 states have return successors, (33), 32 states have call predecessors, (33), 3 states have call successors, (33) [2023-12-21 10:18:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-12-21 10:18:30,462 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 214 [2023-12-21 10:18:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:18:30,462 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-12-21 10:18:30,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.683168316831683) internal successors, (170), 69 states have internal predecessors, (170), 33 states have call successors, (33), 1 states have call predecessors, (33), 31 states have return successors, (61), 33 states have call predecessors, (61), 33 states have call successors, (61) [2023-12-21 10:18:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-12-21 10:18:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-21 10:18:30,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:18:30,463 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:18:30,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-21 10:18:30,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:30,679 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:18:30,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:18:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1375982445, now seen corresponding path program 15 times [2023-12-21 10:18:30,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:18:30,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111723801] [2023-12-21 10:18:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:18:30,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:18:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:18:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:34,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:36,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-21 10:18:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:18:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111723801] [2023-12-21 10:18:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111723801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:18:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468939307] [2023-12-21 10:18:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:18:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:18:37,805 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:18:37,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 10:18:39,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 10:18:39,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:18:39,267 WARN L260 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 256 conjunts are in the unsatisfiable core [2023-12-21 10:18:39,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:18:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-12-21 10:18:39,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:18:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-21 10:18:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468939307] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:18:50,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:18:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 96] total 106 [2023-12-21 10:18:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010931194] [2023-12-21 10:18:50,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:18:50,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-12-21 10:18:50,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:18:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-12-21 10:18:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=10756, Unknown=0, NotChecked=0, Total=11130 [2023-12-21 10:18:50,976 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 106 states, 104 states have (on average 1.6923076923076923) internal successors, (176), 72 states have internal predecessors, (176), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) [2023-12-21 10:18:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:18:53,880 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2023-12-21 10:18:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-21 10:18:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 104 states have (on average 1.6923076923076923) internal successors, (176), 72 states have internal predecessors, (176), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) Word has length 221 [2023-12-21 10:18:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:18:53,882 INFO L225 Difference]: With dead ends: 206 [2023-12-21 10:18:53,882 INFO L226 Difference]: Without dead ends: 202 [2023-12-21 10:18:53,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3028 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1632, Invalid=26424, Unknown=0, NotChecked=0, Total=28056 [2023-12-21 10:18:53,885 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 256 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 3972 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:18:53,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2019 Invalid, 4148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3972 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 10:18:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-21 10:18:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 113. [2023-12-21 10:18:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 33 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-21 10:18:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2023-12-21 10:18:53,888 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 221 [2023-12-21 10:18:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:18:53,888 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2023-12-21 10:18:53,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 104 states have (on average 1.6923076923076923) internal successors, (176), 72 states have internal predecessors, (176), 35 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (63), 34 states have call predecessors, (63), 35 states have call successors, (63) [2023-12-21 10:18:53,888 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2023-12-21 10:18:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-21 10:18:53,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:18:53,889 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:18:53,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 10:18:54,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:18:54,090 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:18:54,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:18:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -266875459, now seen corresponding path program 15 times [2023-12-21 10:18:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:18:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767107193] [2023-12-21 10:18:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:18:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:18:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:18:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:55,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:58,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:18:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:18:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 735 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-21 10:19:01,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:19:01,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767107193] [2023-12-21 10:19:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767107193] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:19:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808964404] [2023-12-21 10:19:01,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 10:19:01,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:19:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:19:01,274 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:19:01,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 10:19:02,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-12-21 10:19:02,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:19:02,724 WARN L260 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 264 conjunts are in the unsatisfiable core [2023-12-21 10:19:02,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:19:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2023-12-21 10:19:03,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:19:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-21 10:19:12,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808964404] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:19:12,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:19:12,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 99] total 109 [2023-12-21 10:19:12,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109673253] [2023-12-21 10:19:12,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:19:12,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-21 10:19:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:19:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-21 10:19:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=11389, Unknown=0, NotChecked=0, Total=11772 [2023-12-21 10:19:12,151 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand has 109 states, 107 states have (on average 1.691588785046729) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) [2023-12-21 10:19:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:19:15,346 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2023-12-21 10:19:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-21 10:19:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 107 states have (on average 1.691588785046729) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) Word has length 228 [2023-12-21 10:19:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:19:15,350 INFO L225 Difference]: With dead ends: 212 [2023-12-21 10:19:15,350 INFO L226 Difference]: Without dead ends: 208 [2023-12-21 10:19:15,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3221 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1748, Invalid=28354, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 10:19:15,353 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 112 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5187 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 5230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 5187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:19:15,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 2608 Invalid, 5230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 5187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 10:19:15,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-21 10:19:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2023-12-21 10:19:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 34 states have call predecessors, (35), 3 states have call successors, (35) [2023-12-21 10:19:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2023-12-21 10:19:15,372 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 228 [2023-12-21 10:19:15,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:19:15,372 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2023-12-21 10:19:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 107 states have (on average 1.691588785046729) internal successors, (181), 74 states have internal predecessors, (181), 36 states have call successors, (36), 1 states have call predecessors, (36), 33 states have return successors, (65), 35 states have call predecessors, (65), 36 states have call successors, (65) [2023-12-21 10:19:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2023-12-21 10:19:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-21 10:19:15,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:19:15,373 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:19:15,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-21 10:19:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-21 10:19:15,592 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:19:15,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:19:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash -975519619, now seen corresponding path program 16 times [2023-12-21 10:19:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:19:15,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380710562] [2023-12-21 10:19:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:19:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:19:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:19:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2023-12-21 10:19:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:19:23,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380710562] [2023-12-21 10:19:23,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380710562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:19:23,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255360126] [2023-12-21 10:19:23,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:19:23,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:19:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:19:23,547 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:19:23,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 10:19:25,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:19:25,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:19:25,082 WARN L260 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 272 conjunts are in the unsatisfiable core [2023-12-21 10:19:25,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:19:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2023-12-21 10:19:25,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:19:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 1504 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-21 10:19:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255360126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:19:35,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:19:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 102] total 112 [2023-12-21 10:19:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610124383] [2023-12-21 10:19:35,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:19:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2023-12-21 10:19:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:19:35,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2023-12-21 10:19:35,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=12036, Unknown=0, NotChecked=0, Total=12432 [2023-12-21 10:19:35,135 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand has 112 states, 110 states have (on average 1.690909090909091) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) [2023-12-21 10:19:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:19:37,884 INFO L93 Difference]: Finished difference Result 218 states and 220 transitions. [2023-12-21 10:19:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 10:19:37,888 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 110 states have (on average 1.690909090909091) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) Word has length 235 [2023-12-21 10:19:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:19:37,889 INFO L225 Difference]: With dead ends: 218 [2023-12-21 10:19:37,889 INFO L226 Difference]: Without dead ends: 214 [2023-12-21 10:19:37,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1801, Invalid=29705, Unknown=0, NotChecked=0, Total=31506 [2023-12-21 10:19:37,891 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 111 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 4716 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 4763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:19:37,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 2371 Invalid, 4763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4716 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 10:19:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-21 10:19:37,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 119. [2023-12-21 10:19:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 2 states have call predecessors, (3), 35 states have return successors, (36), 35 states have call predecessors, (36), 3 states have call successors, (36) [2023-12-21 10:19:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-12-21 10:19:37,895 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 235 [2023-12-21 10:19:37,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:19:37,895 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-12-21 10:19:37,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 110 states have (on average 1.690909090909091) internal successors, (186), 76 states have internal predecessors, (186), 37 states have call successors, (37), 1 states have call predecessors, (37), 34 states have return successors, (67), 36 states have call predecessors, (67), 37 states have call successors, (67) [2023-12-21 10:19:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-12-21 10:19:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-21 10:19:37,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:19:37,896 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:19:37,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 10:19:38,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 10:19:38,097 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:19:38,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:19:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash 93329815, now seen corresponding path program 16 times [2023-12-21 10:19:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:19:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698676729] [2023-12-21 10:19:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:19:38,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:19:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:19:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:39,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:42,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:19:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:19:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2023-12-21 10:19:46,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:19:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698676729] [2023-12-21 10:19:46,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698676729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:19:46,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15601109] [2023-12-21 10:19:46,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 10:19:46,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:19:46,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:19:46,185 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:19:46,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 10:19:47,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 10:19:47,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:19:47,673 WARN L260 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 280 conjunts are in the unsatisfiable core [2023-12-21 10:19:47,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:19:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2023-12-21 10:19:48,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:19:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-21 10:19:59,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15601109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:19:59,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:19:59,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 105] total 114 [2023-12-21 10:19:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860272930] [2023-12-21 10:19:59,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:19:59,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-12-21 10:19:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:19:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-12-21 10:19:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=12481, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 10:19:59,217 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 114 states, 113 states have (on average 1.6814159292035398) internal successors, (190), 77 states have internal predecessors, (190), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) [2023-12-21 10:20:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:20:02,714 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2023-12-21 10:20:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-21 10:20:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.6814159292035398) internal successors, (190), 77 states have internal predecessors, (190), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) Word has length 242 [2023-12-21 10:20:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:20:02,717 INFO L225 Difference]: With dead ends: 224 [2023-12-21 10:20:02,717 INFO L226 Difference]: Without dead ends: 220 [2023-12-21 10:20:02,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3346 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1918, Invalid=31388, Unknown=0, NotChecked=0, Total=33306 [2023-12-21 10:20:02,721 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 137 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 5372 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 5372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:20:02,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2861 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 5372 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 10:20:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-21 10:20:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 122. [2023-12-21 10:20:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 36 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-21 10:20:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2023-12-21 10:20:02,724 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 242 [2023-12-21 10:20:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:20:02,725 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2023-12-21 10:20:02,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.6814159292035398) internal successors, (190), 77 states have internal predecessors, (190), 37 states have call successors, (37), 1 states have call predecessors, (37), 35 states have return successors, (69), 37 states have call predecessors, (69), 37 states have call successors, (69) [2023-12-21 10:20:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2023-12-21 10:20:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 10:20:02,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:20:02,726 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:20:02,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 10:20:02,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:20:02,940 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:20:02,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:20:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash -156238105, now seen corresponding path program 17 times [2023-12-21 10:20:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:20:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960436921] [2023-12-21 10:20:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:20:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:20:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:20:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:08,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:08,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2023-12-21 10:20:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:20:12,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960436921] [2023-12-21 10:20:12,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960436921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:20:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447407854] [2023-12-21 10:20:12,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:20:12,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:20:12,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:20:12,048 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:20:12,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 10:20:13,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 10:20:13,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:20:13,705 WARN L260 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 288 conjunts are in the unsatisfiable core [2023-12-21 10:20:13,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:20:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2023-12-21 10:20:14,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:20:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1700 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 10:20:23,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447407854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:20:23,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:20:23,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 108] total 118 [2023-12-21 10:20:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662609631] [2023-12-21 10:20:23,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:20:23,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2023-12-21 10:20:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:20:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2023-12-21 10:20:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=13388, Unknown=0, NotChecked=0, Total=13806 [2023-12-21 10:20:23,468 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 118 states, 116 states have (on average 1.6896551724137931) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) [2023-12-21 10:20:26,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:20:26,559 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2023-12-21 10:20:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 10:20:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 116 states have (on average 1.6896551724137931) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) Word has length 249 [2023-12-21 10:20:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:20:26,560 INFO L225 Difference]: With dead ends: 230 [2023-12-21 10:20:26,560 INFO L226 Difference]: Without dead ends: 226 [2023-12-21 10:20:26,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3764 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1978, Invalid=33178, Unknown=0, NotChecked=0, Total=35156 [2023-12-21 10:20:26,563 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 328 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 4888 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 5123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:20:26,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 2544 Invalid, 5123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 10:20:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-21 10:20:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 125. [2023-12-21 10:20:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 2 states have call predecessors, (3), 37 states have return successors, (38), 37 states have call predecessors, (38), 3 states have call successors, (38) [2023-12-21 10:20:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-12-21 10:20:26,566 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 249 [2023-12-21 10:20:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:20:26,566 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-12-21 10:20:26,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 116 states have (on average 1.6896551724137931) internal successors, (196), 80 states have internal predecessors, (196), 39 states have call successors, (39), 1 states have call predecessors, (39), 36 states have return successors, (71), 38 states have call predecessors, (71), 39 states have call successors, (71) [2023-12-21 10:20:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-12-21 10:20:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-21 10:20:26,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:20:26,567 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:20:26,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 10:20:26,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 10:20:26,780 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:20:26,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:20:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1639290865, now seen corresponding path program 17 times [2023-12-21 10:20:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:20:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419983920] [2023-12-21 10:20:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:20:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:20:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:20:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:30,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:36,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 935 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2023-12-21 10:20:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:20:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419983920] [2023-12-21 10:20:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419983920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:20:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368336457] [2023-12-21 10:20:36,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 10:20:36,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:20:36,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:20:36,388 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:20:36,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 10:20:38,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-21 10:20:38,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:20:38,149 WARN L260 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 296 conjunts are in the unsatisfiable core [2023-12-21 10:20:38,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:20:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2023-12-21 10:20:38,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:20:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 1802 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-21 10:20:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368336457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:20:49,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:20:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 111] total 120 [2023-12-21 10:20:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937418774] [2023-12-21 10:20:49,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:20:49,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-12-21 10:20:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:20:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-12-21 10:20:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=13857, Unknown=0, NotChecked=0, Total=14280 [2023-12-21 10:20:49,728 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 120 states, 119 states have (on average 1.680672268907563) internal successors, (200), 81 states have internal predecessors, (200), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) [2023-12-21 10:20:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:20:54,140 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2023-12-21 10:20:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-21 10:20:54,140 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.680672268907563) internal successors, (200), 81 states have internal predecessors, (200), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) Word has length 256 [2023-12-21 10:20:54,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:20:54,141 INFO L225 Difference]: With dead ends: 236 [2023-12-21 10:20:54,141 INFO L226 Difference]: Without dead ends: 232 [2023-12-21 10:20:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2101, Invalid=34955, Unknown=0, NotChecked=0, Total=37056 [2023-12-21 10:20:54,145 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 120 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 5947 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 5992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:20:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 3005 Invalid, 5992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5947 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 10:20:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-21 10:20:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 128. [2023-12-21 10:20:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 2 states have call predecessors, (3), 38 states have return successors, (39), 38 states have call predecessors, (39), 3 states have call successors, (39) [2023-12-21 10:20:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2023-12-21 10:20:54,161 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 256 [2023-12-21 10:20:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:20:54,161 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2023-12-21 10:20:54,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.680672268907563) internal successors, (200), 81 states have internal predecessors, (200), 39 states have call successors, (39), 1 states have call predecessors, (39), 37 states have return successors, (73), 39 states have call predecessors, (73), 39 states have call successors, (73) [2023-12-21 10:20:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2023-12-21 10:20:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 10:20:54,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:20:54,162 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:20:54,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-21 10:20:54,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-21 10:20:54,380 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:20:54,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:20:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 947292113, now seen corresponding path program 18 times [2023-12-21 10:20:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:20:54,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396634606] [2023-12-21 10:20:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:20:54,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:20:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:20:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:20:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:20:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:04,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2023-12-21 10:21:04,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:21:04,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396634606] [2023-12-21 10:21:04,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396634606] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:21:04,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072448794] [2023-12-21 10:21:04,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:21:04,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:21:04,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:21:04,441 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:21:04,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 10:21:06,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 10:21:06,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:21:06,240 WARN L260 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 304 conjunts are in the unsatisfiable core [2023-12-21 10:21:06,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:21:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-12-21 10:21:06,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:21:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 1908 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-21 10:21:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072448794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:21:21,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:21:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80, 114] total 124 [2023-12-21 10:21:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567231446] [2023-12-21 10:21:21,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:21:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2023-12-21 10:21:21,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:21:21,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2023-12-21 10:21:21,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=14812, Unknown=0, NotChecked=0, Total=15252 [2023-12-21 10:21:21,300 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 124 states, 122 states have (on average 1.6885245901639345) internal successors, (206), 84 states have internal predecessors, (206), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) [2023-12-21 10:21:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:21:26,267 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2023-12-21 10:21:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-21 10:21:26,267 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 122 states have (on average 1.6885245901639345) internal successors, (206), 84 states have internal predecessors, (206), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) Word has length 263 [2023-12-21 10:21:26,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:21:26,268 INFO L225 Difference]: With dead ends: 242 [2023-12-21 10:21:26,268 INFO L226 Difference]: Without dead ends: 238 [2023-12-21 10:21:26,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4162 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2163, Invalid=36843, Unknown=0, NotChecked=0, Total=39006 [2023-12-21 10:21:26,272 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 93 mSDsluCounter, 3234 mSDsCounter, 0 mSdLazyCounter, 6133 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 6191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 6133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:21:26,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 3281 Invalid, 6191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 6133 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 10:21:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-21 10:21:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 131. [2023-12-21 10:21:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 39 states have return successors, (40), 39 states have call predecessors, (40), 3 states have call successors, (40) [2023-12-21 10:21:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2023-12-21 10:21:26,275 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 263 [2023-12-21 10:21:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:21:26,276 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2023-12-21 10:21:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 122 states have (on average 1.6885245901639345) internal successors, (206), 84 states have internal predecessors, (206), 41 states have call successors, (41), 1 states have call predecessors, (41), 38 states have return successors, (75), 40 states have call predecessors, (75), 41 states have call successors, (75) [2023-12-21 10:21:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2023-12-21 10:21:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-21 10:21:26,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:21:26,277 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:21:26,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 10:21:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-21 10:21:26,477 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:21:26,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:21:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1365502155, now seen corresponding path program 18 times [2023-12-21 10:21:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:21:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806623660] [2023-12-21 10:21:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:21:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:21:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:21:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:27,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:28,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:21:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:21:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2023-12-21 10:21:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:21:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806623660] [2023-12-21 10:21:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806623660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:21:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327404036] [2023-12-21 10:21:37,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 10:21:37,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:21:37,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:21:37,368 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:21:37,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 10:21:39,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-21 10:21:39,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:21:39,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 236 conjunts are in the unsatisfiable core [2023-12-21 10:21:39,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:21:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2023-12-21 10:21:43,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:25:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-12-21 10:25:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327404036] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:25:50,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:25:50,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82, 117] total 276 [2023-12-21 10:25:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991644599] [2023-12-21 10:25:50,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:25:50,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 276 states [2023-12-21 10:25:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:25:50,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2023-12-21 10:25:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=74746, Unknown=0, NotChecked=0, Total=75900 [2023-12-21 10:25:50,021 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 276 states, 274 states have (on average 1.313868613138686) internal successors, (360), 162 states have internal predecessors, (360), 42 states have call successors, (42), 1 states have call predecessors, (42), 114 states have return successors, (114), 114 states have call predecessors, (114), 42 states have call successors, (114) [2023-12-21 10:26:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:26:00,418 INFO L93 Difference]: Finished difference Result 248 states and 250 transitions. [2023-12-21 10:26:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-21 10:26:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 276 states, 274 states have (on average 1.313868613138686) internal successors, (360), 162 states have internal predecessors, (360), 42 states have call successors, (42), 1 states have call predecessors, (42), 114 states have return successors, (114), 114 states have call predecessors, (114), 42 states have call successors, (114) Word has length 270 [2023-12-21 10:26:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:26:00,419 INFO L225 Difference]: With dead ends: 248 [2023-12-21 10:26:00,419 INFO L226 Difference]: Without dead ends: 244 [2023-12-21 10:26:00,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25920 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=3116, Invalid=121140, Unknown=0, NotChecked=0, Total=124256 [2023-12-21 10:26:00,429 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 6783 mSDsCounter, 0 mSdLazyCounter, 13304 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 13321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 13304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:26:00,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6831 Invalid, 13321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 13304 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-21 10:26:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-21 10:26:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 134. [2023-12-21 10:26:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 2 states have call predecessors, (3), 40 states have return successors, (41), 40 states have call predecessors, (41), 3 states have call successors, (41) [2023-12-21 10:26:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2023-12-21 10:26:00,432 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 270 [2023-12-21 10:26:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:26:00,433 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2023-12-21 10:26:00,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 276 states, 274 states have (on average 1.313868613138686) internal successors, (360), 162 states have internal predecessors, (360), 42 states have call successors, (42), 1 states have call predecessors, (42), 114 states have return successors, (114), 114 states have call predecessors, (114), 42 states have call successors, (114) [2023-12-21 10:26:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2023-12-21 10:26:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-21 10:26:00,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:26:00,434 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:26:00,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-21 10:26:00,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:26:00,648 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:26:00,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:26:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -489620677, now seen corresponding path program 19 times [2023-12-21 10:26:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:26:00,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202059468] [2023-12-21 10:26:00,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:26:00,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:26:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:26:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:06,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:10,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:11,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1102 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2023-12-21 10:26:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:26:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202059468] [2023-12-21 10:26:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202059468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:26:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464138711] [2023-12-21 10:26:12,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:26:12,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:26:12,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:26:12,460 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:26:12,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 10:26:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:16,965 WARN L260 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 320 conjunts are in the unsatisfiable core [2023-12-21 10:26:16,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:26:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2023-12-21 10:26:17,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:26:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 2128 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2023-12-21 10:26:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464138711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:26:30,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:26:30,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 120] total 130 [2023-12-21 10:26:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664827011] [2023-12-21 10:26:30,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:26:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-12-21 10:26:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:26:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-12-21 10:26:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=16308, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 10:26:30,841 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 130 states, 128 states have (on average 1.6875) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) [2023-12-21 10:26:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:26:34,897 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2023-12-21 10:26:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-21 10:26:34,898 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 128 states have (on average 1.6875) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) Word has length 277 [2023-12-21 10:26:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:26:34,913 INFO L225 Difference]: With dead ends: 254 [2023-12-21 10:26:34,913 INFO L226 Difference]: Without dead ends: 250 [2023-12-21 10:26:34,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4580 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2356, Invalid=40700, Unknown=0, NotChecked=0, Total=43056 [2023-12-21 10:26:34,917 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 97 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 6566 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 6627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 6566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:26:34,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 3411 Invalid, 6627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 6566 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 10:26:34,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-21 10:26:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 137. [2023-12-21 10:26:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 41 states have call predecessors, (42), 3 states have call successors, (42) [2023-12-21 10:26:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2023-12-21 10:26:34,922 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 277 [2023-12-21 10:26:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:26:34,922 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2023-12-21 10:26:34,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 128 states have (on average 1.6875) internal successors, (216), 88 states have internal predecessors, (216), 43 states have call successors, (43), 1 states have call predecessors, (43), 40 states have return successors, (79), 42 states have call predecessors, (79), 43 states have call successors, (79) [2023-12-21 10:26:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2023-12-21 10:26:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-21 10:26:34,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:26:34,923 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:26:34,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-21 10:26:35,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:26:35,136 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:26:35,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:26:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1273058267, now seen corresponding path program 19 times [2023-12-21 10:26:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:26:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181146291] [2023-12-21 10:26:35,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:26:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:26:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:26:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:39,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:40,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:41,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:43,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:45,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:26:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1159 refuted. 0 times theorem prover too weak. 1463 trivial. 0 not checked. [2023-12-21 10:26:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:26:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181146291] [2023-12-21 10:26:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181146291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:26:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5797293] [2023-12-21 10:26:48,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 10:26:48,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:26:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:26:48,131 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:26:48,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 10:26:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:26:52,529 WARN L260 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 328 conjunts are in the unsatisfiable core [2023-12-21 10:26:52,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:26:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2023-12-21 10:26:52,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:27:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 2242 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-21 10:27:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5797293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:27:04,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:27:04,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 123] total 132 [2023-12-21 10:27:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605792074] [2023-12-21 10:27:04,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:27:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2023-12-21 10:27:04,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:27:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2023-12-21 10:27:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=16825, Unknown=0, NotChecked=0, Total=17292 [2023-12-21 10:27:04,897 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand has 132 states, 131 states have (on average 1.6793893129770991) internal successors, (220), 89 states have internal predecessors, (220), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) [2023-12-21 10:27:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:27:09,249 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2023-12-21 10:27:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 10:27:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 1.6793893129770991) internal successors, (220), 89 states have internal predecessors, (220), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) Word has length 284 [2023-12-21 10:27:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:27:09,250 INFO L225 Difference]: With dead ends: 260 [2023-12-21 10:27:09,250 INFO L226 Difference]: Without dead ends: 256 [2023-12-21 10:27:09,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4531 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2491, Invalid=42665, Unknown=0, NotChecked=0, Total=45156 [2023-12-21 10:27:09,259 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 99 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 6521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:27:09,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3371 Invalid, 6521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 10:27:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-21 10:27:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 140. [2023-12-21 10:27:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 42 states have return successors, (43), 42 states have call predecessors, (43), 3 states have call successors, (43) [2023-12-21 10:27:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2023-12-21 10:27:09,264 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 284 [2023-12-21 10:27:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:27:09,265 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2023-12-21 10:27:09,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 1.6793893129770991) internal successors, (220), 89 states have internal predecessors, (220), 43 states have call successors, (43), 1 states have call predecessors, (43), 41 states have return successors, (81), 43 states have call predecessors, (81), 43 states have call successors, (81) [2023-12-21 10:27:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2023-12-21 10:27:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-21 10:27:09,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:27:09,267 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:27:09,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-21 10:27:09,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-21 10:27:09,492 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:27:09,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:27:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash 386529573, now seen corresponding path program 20 times [2023-12-21 10:27:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:27:09,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383063389] [2023-12-21 10:27:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:27:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:27:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:27:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1220 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2023-12-21 10:27:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:27:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383063389] [2023-12-21 10:27:22,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383063389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:27:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256099782] [2023-12-21 10:27:22,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 10:27:22,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:27:22,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:27:22,745 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:27:22,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 10:27:27,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 10:27:27,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 10:27:27,286 WARN L260 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 336 conjunts are in the unsatisfiable core [2023-12-21 10:27:27,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:27:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2023-12-21 10:27:27,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:27:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-12-21 10:27:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256099782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:27:40,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:27:40,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 126] total 136 [2023-12-21 10:27:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256001432] [2023-12-21 10:27:40,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:27:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2023-12-21 10:27:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:27:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2023-12-21 10:27:40,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=17876, Unknown=0, NotChecked=0, Total=18360 [2023-12-21 10:27:40,976 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand has 136 states, 134 states have (on average 1.6865671641791045) internal successors, (226), 92 states have internal predecessors, (226), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) [2023-12-21 10:27:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:27:46,372 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2023-12-21 10:27:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-21 10:27:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 134 states have (on average 1.6865671641791045) internal successors, (226), 92 states have internal predecessors, (226), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) Word has length 291 [2023-12-21 10:27:46,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:27:46,373 INFO L225 Difference]: With dead ends: 266 [2023-12-21 10:27:46,373 INFO L226 Difference]: Without dead ends: 262 [2023-12-21 10:27:46,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5018 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2557, Invalid=44749, Unknown=0, NotChecked=0, Total=47306 [2023-12-21 10:27:46,376 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 145 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 6802 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 6893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 6802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:27:46,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3554 Invalid, 6893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 6802 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 10:27:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-21 10:27:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 143. [2023-12-21 10:27:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 43 states have return successors, (44), 43 states have call predecessors, (44), 3 states have call successors, (44) [2023-12-21 10:27:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2023-12-21 10:27:46,379 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 291 [2023-12-21 10:27:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:27:46,379 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2023-12-21 10:27:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 134 states have (on average 1.6865671641791045) internal successors, (226), 92 states have internal predecessors, (226), 45 states have call successors, (45), 1 states have call predecessors, (45), 42 states have return successors, (83), 44 states have call predecessors, (83), 45 states have call successors, (83) [2023-12-21 10:27:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2023-12-21 10:27:46,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-21 10:27:46,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:27:46,381 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:27:46,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-21 10:27:46,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-21 10:27:46,584 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:27:46,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:27:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1777237505, now seen corresponding path program 20 times [2023-12-21 10:27:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:27:46,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425877911] [2023-12-21 10:27:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:27:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:27:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:27:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:55,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:27:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:27:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-21 10:27:58,434 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 10:27:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 10:27:58,434 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 299 with TraceHistMax 21,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. [2023-12-21 10:27:58,437 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 1, 1, 1, 1, 1] [2023-12-21 10:27:58,439 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 10:27:58,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:27:58 BoogieIcfgContainer [2023-12-21 10:27:58,440 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 10:27:58,440 INFO L158 Benchmark]: Toolchain (without parser) took 840501.28ms. Allocated memory was 308.3MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 261.1MB in the beginning and 352.3MB in the end (delta: -91.2MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 10:27:58,440 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory was 133.5MB in the beginning and 133.3MB in the end (delta: 142.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 10:27:58,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.12ms. Allocated memory is still 308.3MB. Free memory was 260.7MB in the beginning and 250.2MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 10:27:58,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.90ms. Allocated memory is still 308.3MB. Free memory was 250.2MB in the beginning and 248.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 10:27:58,440 INFO L158 Benchmark]: Boogie Preprocessor took 30.39ms. Allocated memory is still 308.3MB. Free memory was 248.6MB in the beginning and 247.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 10:27:58,441 INFO L158 Benchmark]: RCFGBuilder took 239.53ms. Allocated memory is still 308.3MB. Free memory was 247.0MB in the beginning and 235.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 10:27:58,441 INFO L158 Benchmark]: TraceAbstraction took 839953.57ms. Allocated memory was 308.3MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 234.4MB in the beginning and 352.3MB in the end (delta: -117.9MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 10:27:58,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-21 10:27:58,441 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory was 133.5MB in the beginning and 133.3MB in the end (delta: 142.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 228.12ms. Allocated memory is still 308.3MB. Free memory was 260.7MB in the beginning and 250.2MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.90ms. Allocated memory is still 308.3MB. Free memory was 250.2MB in the beginning and 248.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.39ms. Allocated memory is still 308.3MB. Free memory was 248.6MB in the beginning and 247.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 239.53ms. Allocated memory is still 308.3MB. Free memory was 247.0MB in the beginning and 235.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 839953.57ms. Allocated memory was 308.3MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 234.4MB in the beginning and 352.3MB in the end (delta: -117.9MB). Peak memory consumption was 1.4GB. 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 - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 49). Cancelled while NwaCegarLoop was analyzing trace of length 299 with TraceHistMax 21,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 839.9s, OverallIterations: 45, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 84.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3936 SdHoareTripleChecker+Valid, 35.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3542 mSDsluCounter, 64706 SdHoareTripleChecker+Invalid, 30.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63372 mSDsCounter, 1883 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124211 IncrementalHoareTripleChecker+Invalid, 126094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1883 mSolverCounterUnsat, 1334 mSDtfsCounter, 124211 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17623 GetRequests, 12623 SyntacticMatches, 0 SemanticMatches, 5000 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107058 ImplicationChecksByTransitivity, 145.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=44, InterpolantAutomatonStates: 1999, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 44 MinimizatonAttempts, 2424 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 699.3s InterpolantComputationTime, 12404 NumberOfCodeBlocks, 12404 NumberOfCodeBlocksAsserted, 288 NumberOfCheckSat, 18444 ConstructedInterpolants, 0 QuantifiedInterpolants, 100216 SizeOfPredicates, 897 NumberOfNonLiveVariables, 14118 ConjunctsInSsa, 7048 ConjunctsInUnsatCore, 122 InterpolantComputations, 5 PerfectInterpolantSequences, 48174/113734 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown