/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:20:58,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:20:58,067 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 13:20:58,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:20:58,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:20:58,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:20:58,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:20:58,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:20:58,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:20:58,105 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:20:58,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:20:58,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:20:58,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:20:58,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:20:58,106 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:20:58,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:20:58,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:20:58,106 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:20:58,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:20:58,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:20:58,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:20:58,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:20:58,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:20:58,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:20:58,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:20:58,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:20:58,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:20:58,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:20:58,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:20:58,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:20:58,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:20:58,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:20:58,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:20:58,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:20:58,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:20:58,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:20:58,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:20:58,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:20:58,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:20:58,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:20:58,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:20:58,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:20:58,306 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:20:58,307 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:20:58,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:20:59,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:20:59,535 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:20:59,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:20:59,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64fa7fd6/9baee3a1c6bf4e09ab522f7e8088278a/FLAG03c8e2ee7 [2023-12-21 13:20:59,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64fa7fd6/9baee3a1c6bf4e09ab522f7e8088278a [2023-12-21 13:20:59,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:20:59,567 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:20:59,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:20:59,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:20:59,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:20:59,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570e93e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59, skipping insertion in model container [2023-12-21 13:20:59,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:20:59,768 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2023-12-21 13:20:59,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:20:59,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:20:59,850 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2023-12-21 13:20:59,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:20:59,876 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:20:59,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59 WrapperNode [2023-12-21 13:20:59,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:20:59,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:20:59,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:20:59,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:20:59,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,930 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 638 [2023-12-21 13:20:59,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:20:59,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:20:59,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:20:59,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:20:59,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,956 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 13:20:59,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:20:59,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:20:59,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:20:59,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:20:59,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:21:00,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (1/1) ... [2023-12-21 13:21:00,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:21:00,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:00,022 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 13:21:00,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:21:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:21:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:21:00,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:21:00,072 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 13:21:00,163 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:21:00,164 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:21:00,672 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:21:00,704 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:21:00,705 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:21:00,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:00 BoogieIcfgContainer [2023-12-21 13:21:00,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:21:00,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:21:00,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:21:00,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:21:00,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:20:59" (1/3) ... [2023-12-21 13:21:00,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f025b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:00, skipping insertion in model container [2023-12-21 13:21:00,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:20:59" (2/3) ... [2023-12-21 13:21:00,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f025b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:00, skipping insertion in model container [2023-12-21 13:21:00,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:00" (3/3) ... [2023-12-21 13:21:00,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 13:21:00,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:21:00,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:21:00,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:21:00,761 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;@46047ec7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:21:00,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:21:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:21:00,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:00,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:00,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1575541599, now seen corresponding path program 1 times [2023-12-21 13:21:00,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:00,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163995374] [2023-12-21 13:21:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:01,130 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 13:21:01,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:01,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163995374] [2023-12-21 13:21:01,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163995374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:01,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:01,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159771462] [2023-12-21 13:21:01,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:01,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:01,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:01,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:01,158 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:01,331 INFO L93 Difference]: Finished difference Result 510 states and 828 transitions. [2023-12-21 13:21:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-21 13:21:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:01,344 INFO L225 Difference]: With dead ends: 510 [2023-12-21 13:21:01,344 INFO L226 Difference]: Without dead ends: 436 [2023-12-21 13:21:01,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:01,350 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:01,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1264 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-21 13:21:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 254. [2023-12-21 13:21:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.517786561264822) internal successors, (384), 253 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2023-12-21 13:21:01,388 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 48 [2023-12-21 13:21:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:01,389 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2023-12-21 13:21:01,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2023-12-21 13:21:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:21:01,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:01,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:21:01,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:01,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1998714766, now seen corresponding path program 1 times [2023-12-21 13:21:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:01,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039816356] [2023-12-21 13:21:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:01,465 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 13:21:01,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:01,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039816356] [2023-12-21 13:21:01,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039816356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:01,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:01,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:01,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744266464] [2023-12-21 13:21:01,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:01,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:01,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,468 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:01,501 INFO L93 Difference]: Finished difference Result 626 states and 964 transitions. [2023-12-21 13:21:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:21:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:01,503 INFO L225 Difference]: With dead ends: 626 [2023-12-21 13:21:01,503 INFO L226 Difference]: Without dead ends: 428 [2023-12-21 13:21:01,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,505 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:01,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-21 13:21:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2023-12-21 13:21:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5058823529411764) internal successors, (640), 425 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 640 transitions. [2023-12-21 13:21:01,517 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 640 transitions. Word has length 51 [2023-12-21 13:21:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:01,517 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 640 transitions. [2023-12-21 13:21:01,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 640 transitions. [2023-12-21 13:21:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:21:01,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:01,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:21:01,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:01,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:01,519 INFO L85 PathProgramCache]: Analyzing trace with hash -794348179, now seen corresponding path program 1 times [2023-12-21 13:21:01,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:01,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021411518] [2023-12-21 13:21:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:01,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:01,583 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 13:21:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021411518] [2023-12-21 13:21:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021411518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476375185] [2023-12-21 13:21:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,588 INFO L87 Difference]: Start difference. First operand 426 states and 640 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:01,611 INFO L93 Difference]: Finished difference Result 1076 states and 1637 transitions. [2023-12-21 13:21:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:01,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:21:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:01,615 INFO L225 Difference]: With dead ends: 1076 [2023-12-21 13:21:01,615 INFO L226 Difference]: Without dead ends: 748 [2023-12-21 13:21:01,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,621 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:01,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-21 13:21:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-12-21 13:21:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4953020134228188) internal successors, (1114), 745 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1114 transitions. [2023-12-21 13:21:01,641 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1114 transitions. Word has length 51 [2023-12-21 13:21:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:01,645 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1114 transitions. [2023-12-21 13:21:01,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1114 transitions. [2023-12-21 13:21:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:21:01,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:01,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:21:01,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:01,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1645949330, now seen corresponding path program 1 times [2023-12-21 13:21:01,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:01,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916718296] [2023-12-21 13:21:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:01,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:01,724 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 13:21:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916718296] [2023-12-21 13:21:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916718296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428513918] [2023-12-21 13:21:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,726 INFO L87 Difference]: Start difference. First operand 746 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:01,749 INFO L93 Difference]: Finished difference Result 1856 states and 2791 transitions. [2023-12-21 13:21:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:01,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-21 13:21:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:01,753 INFO L225 Difference]: With dead ends: 1856 [2023-12-21 13:21:01,753 INFO L226 Difference]: Without dead ends: 1292 [2023-12-21 13:21:01,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:01,762 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:01,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-21 13:21:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1290. [2023-12-21 13:21:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.4755624515128005) internal successors, (1902), 1289 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1902 transitions. [2023-12-21 13:21:01,804 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1902 transitions. Word has length 51 [2023-12-21 13:21:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:01,805 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1902 transitions. [2023-12-21 13:21:01,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1902 transitions. [2023-12-21 13:21:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:01,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:01,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:21:01,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:01,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash 245016470, now seen corresponding path program 1 times [2023-12-21 13:21:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465618842] [2023-12-21 13:21:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:01,906 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 13:21:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465618842] [2023-12-21 13:21:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465618842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:01,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126895853] [2023-12-21 13:21:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:01,907 INFO L87 Difference]: Start difference. First operand 1290 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:01,972 INFO L93 Difference]: Finished difference Result 2510 states and 3767 transitions. [2023-12-21 13:21:01,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:01,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:01,979 INFO L225 Difference]: With dead ends: 2510 [2023-12-21 13:21:01,980 INFO L226 Difference]: Without dead ends: 2144 [2023-12-21 13:21:01,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:01,981 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:01,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1140 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2023-12-21 13:21:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1739. [2023-12-21 13:21:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 1.4838895281933258) internal successors, (2579), 1738 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2579 transitions. [2023-12-21 13:21:02,012 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2579 transitions. Word has length 52 [2023-12-21 13:21:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:02,012 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2579 transitions. [2023-12-21 13:21:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2579 transitions. [2023-12-21 13:21:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:02,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:02,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:21:02,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -102096570, now seen corresponding path program 1 times [2023-12-21 13:21:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451560702] [2023-12-21 13:21:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:02,128 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 13:21:02,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451560702] [2023-12-21 13:21:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451560702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:02,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131496943] [2023-12-21 13:21:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:02,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:02,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:02,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:02,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:02,130 INFO L87 Difference]: Start difference. First operand 1739 states and 2579 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:02,187 INFO L93 Difference]: Finished difference Result 2959 states and 4444 transitions. [2023-12-21 13:21:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:02,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:02,194 INFO L225 Difference]: With dead ends: 2959 [2023-12-21 13:21:02,194 INFO L226 Difference]: Without dead ends: 2593 [2023-12-21 13:21:02,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:02,195 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:02,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 995 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2023-12-21 13:21:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2084. [2023-12-21 13:21:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.4891982717234757) internal successors, (3102), 2083 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3102 transitions. [2023-12-21 13:21:02,226 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3102 transitions. Word has length 52 [2023-12-21 13:21:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3102 transitions. [2023-12-21 13:21:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3102 transitions. [2023-12-21 13:21:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:21:02,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:02,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:21:02,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:02,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1890794456, now seen corresponding path program 1 times [2023-12-21 13:21:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068650283] [2023-12-21 13:21:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:02,306 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 13:21:02,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:02,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068650283] [2023-12-21 13:21:02,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068650283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:02,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:02,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:02,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589980525] [2023-12-21 13:21:02,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:02,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:02,308 INFO L87 Difference]: Start difference. First operand 2084 states and 3102 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:02,411 INFO L93 Difference]: Finished difference Result 3358 states and 5044 transitions. [2023-12-21 13:21:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:02,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:21:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:02,419 INFO L225 Difference]: With dead ends: 3358 [2023-12-21 13:21:02,419 INFO L226 Difference]: Without dead ends: 2992 [2023-12-21 13:21:02,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:02,422 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 635 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:02,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1066 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2023-12-21 13:21:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2374. [2023-12-21 13:21:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.493046776232617) internal successors, (3543), 2373 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3543 transitions. [2023-12-21 13:21:02,462 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3543 transitions. Word has length 52 [2023-12-21 13:21:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:02,463 INFO L495 AbstractCegarLoop]: Abstraction has 2374 states and 3543 transitions. [2023-12-21 13:21:02,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3543 transitions. [2023-12-21 13:21:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:21:02,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:02,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:02,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:21:02,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:02,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 906241263, now seen corresponding path program 1 times [2023-12-21 13:21:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104064025] [2023-12-21 13:21:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:02,551 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 13:21:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104064025] [2023-12-21 13:21:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104064025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335268157] [2023-12-21 13:21:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:02,552 INFO L87 Difference]: Start difference. First operand 2374 states and 3543 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:02,713 INFO L93 Difference]: Finished difference Result 5638 states and 8418 transitions. [2023-12-21 13:21:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:02,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 13:21:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:02,722 INFO L225 Difference]: With dead ends: 5638 [2023-12-21 13:21:02,723 INFO L226 Difference]: Without dead ends: 3308 [2023-12-21 13:21:02,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:02,728 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 903 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:02,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 228 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2023-12-21 13:21:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3290. [2023-12-21 13:21:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.482213438735178) internal successors, (4875), 3289 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4875 transitions. [2023-12-21 13:21:02,784 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4875 transitions. Word has length 56 [2023-12-21 13:21:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:02,784 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 4875 transitions. [2023-12-21 13:21:02,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4875 transitions. [2023-12-21 13:21:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:21:02,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:02,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:21:02,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:02,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 616335039, now seen corresponding path program 1 times [2023-12-21 13:21:02,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:02,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012985981] [2023-12-21 13:21:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:02,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:02,857 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 13:21:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012985981] [2023-12-21 13:21:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012985981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:02,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:02,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870137958] [2023-12-21 13:21:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:02,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:02,860 INFO L87 Difference]: Start difference. First operand 3290 states and 4875 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:03,037 INFO L93 Difference]: Finished difference Result 7769 states and 11510 transitions. [2023-12-21 13:21:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 13:21:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:03,048 INFO L225 Difference]: With dead ends: 7769 [2023-12-21 13:21:03,049 INFO L226 Difference]: Without dead ends: 4559 [2023-12-21 13:21:03,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:03,053 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 860 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:03,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 230 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-12-21 13:21:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4534. [2023-12-21 13:21:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 1.4683432605338629) internal successors, (6656), 4533 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6656 transitions. [2023-12-21 13:21:03,122 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6656 transitions. Word has length 56 [2023-12-21 13:21:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:03,122 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 6656 transitions. [2023-12-21 13:21:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6656 transitions. [2023-12-21 13:21:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:21:03,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:03,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:21:03,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:03,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1205433356, now seen corresponding path program 1 times [2023-12-21 13:21:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955024163] [2023-12-21 13:21:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:03,188 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 13:21:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955024163] [2023-12-21 13:21:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955024163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709316850] [2023-12-21 13:21:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:03,189 INFO L87 Difference]: Start difference. First operand 4534 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:03,359 INFO L93 Difference]: Finished difference Result 10834 states and 15859 transitions. [2023-12-21 13:21:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:03,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 13:21:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:03,383 INFO L225 Difference]: With dead ends: 10834 [2023-12-21 13:21:03,383 INFO L226 Difference]: Without dead ends: 6326 [2023-12-21 13:21:03,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:03,390 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 882 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:03,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 209 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:21:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6326 states. [2023-12-21 13:21:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6326 to 6275. [2023-12-21 13:21:03,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6275 states, 6274 states have (on average 1.4423015620019126) internal successors, (9049), 6274 states have internal predecessors, (9049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 9049 transitions. [2023-12-21 13:21:03,525 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 9049 transitions. Word has length 57 [2023-12-21 13:21:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:03,525 INFO L495 AbstractCegarLoop]: Abstraction has 6275 states and 9049 transitions. [2023-12-21 13:21:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 9049 transitions. [2023-12-21 13:21:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:21:03,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:03,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:03,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:21:03,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:03,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1874451944, now seen corresponding path program 1 times [2023-12-21 13:21:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:03,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269157530] [2023-12-21 13:21:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:03,623 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 13:21:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269157530] [2023-12-21 13:21:03,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269157530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:03,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:03,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:03,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102727217] [2023-12-21 13:21:03,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:03,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:03,625 INFO L87 Difference]: Start difference. First operand 6275 states and 9049 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:03,918 INFO L93 Difference]: Finished difference Result 24214 states and 34742 transitions. [2023-12-21 13:21:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:21:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 13:21:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:03,953 INFO L225 Difference]: With dead ends: 24214 [2023-12-21 13:21:03,953 INFO L226 Difference]: Without dead ends: 20968 [2023-12-21 13:21:03,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:03,964 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2089 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:03,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 347 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20968 states. [2023-12-21 13:21:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20968 to 6295. [2023-12-21 13:21:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6294 states have (on average 1.4415316174134096) internal successors, (9073), 6294 states have internal predecessors, (9073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 9073 transitions. [2023-12-21 13:21:04,159 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 9073 transitions. Word has length 58 [2023-12-21 13:21:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 6295 states and 9073 transitions. [2023-12-21 13:21:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 9073 transitions. [2023-12-21 13:21:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:21:04,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:04,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:04,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:21:04,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 911284937, now seen corresponding path program 1 times [2023-12-21 13:21:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63135266] [2023-12-21 13:21:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:04,258 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 13:21:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63135266] [2023-12-21 13:21:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63135266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:04,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:04,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:04,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174373566] [2023-12-21 13:21:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:04,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:04,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:04,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:04,259 INFO L87 Difference]: Start difference. First operand 6295 states and 9073 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:04,616 INFO L93 Difference]: Finished difference Result 28477 states and 40804 transitions. [2023-12-21 13:21:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:21:04,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 13:21:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:04,648 INFO L225 Difference]: With dead ends: 28477 [2023-12-21 13:21:04,648 INFO L226 Difference]: Without dead ends: 25379 [2023-12-21 13:21:04,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:04,655 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2380 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 393 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25379 states. [2023-12-21 13:21:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25379 to 6389. [2023-12-21 13:21:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 6388 states have (on average 1.439261114589856) internal successors, (9194), 6388 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 9194 transitions. [2023-12-21 13:21:04,868 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 9194 transitions. Word has length 58 [2023-12-21 13:21:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:04,869 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 9194 transitions. [2023-12-21 13:21:04,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 9194 transitions. [2023-12-21 13:21:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:21:04,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:04,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:04,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:21:04,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:04,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash 363659370, now seen corresponding path program 1 times [2023-12-21 13:21:04,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187178092] [2023-12-21 13:21:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:04,938 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 13:21:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187178092] [2023-12-21 13:21:04,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187178092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:04,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:04,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984973301] [2023-12-21 13:21:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:21:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:21:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:21:04,940 INFO L87 Difference]: Start difference. First operand 6389 states and 9194 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:05,315 INFO L93 Difference]: Finished difference Result 33778 states and 48450 transitions. [2023-12-21 13:21:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:21:05,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 13:21:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:05,359 INFO L225 Difference]: With dead ends: 33778 [2023-12-21 13:21:05,359 INFO L226 Difference]: Without dead ends: 30680 [2023-12-21 13:21:05,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:21:05,372 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2743 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:05,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 410 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30680 states. [2023-12-21 13:21:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30680 to 6445. [2023-12-21 13:21:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 6444 states have (on average 1.4374612042209807) internal successors, (9263), 6444 states have internal predecessors, (9263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9263 transitions. [2023-12-21 13:21:05,624 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9263 transitions. Word has length 58 [2023-12-21 13:21:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:05,624 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 9263 transitions. [2023-12-21 13:21:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9263 transitions. [2023-12-21 13:21:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:21:05,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:05,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:21:05,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:05,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash 13401980, now seen corresponding path program 1 times [2023-12-21 13:21:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523449836] [2023-12-21 13:21:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:05,809 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 13:21:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523449836] [2023-12-21 13:21:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523449836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:05,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:21:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829664226] [2023-12-21 13:21:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:05,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:21:05,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:21:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:05,810 INFO L87 Difference]: Start difference. First operand 6445 states and 9263 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:06,485 INFO L93 Difference]: Finished difference Result 21542 states and 30926 transitions. [2023-12-21 13:21:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:21:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 13:21:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:06,503 INFO L225 Difference]: With dead ends: 21542 [2023-12-21 13:21:06,503 INFO L226 Difference]: Without dead ends: 16352 [2023-12-21 13:21:06,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:21:06,512 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1479 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:06,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1196 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16352 states. [2023-12-21 13:21:06,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16352 to 6317. [2023-12-21 13:21:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.4344521849271692) internal successors, (9060), 6316 states have internal predecessors, (9060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9060 transitions. [2023-12-21 13:21:06,629 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9060 transitions. Word has length 60 [2023-12-21 13:21:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:06,629 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 9060 transitions. [2023-12-21 13:21:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9060 transitions. [2023-12-21 13:21:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:21:06,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:06,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:06,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:21:06,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:06,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -838199171, now seen corresponding path program 1 times [2023-12-21 13:21:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:06,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595182938] [2023-12-21 13:21:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:06,835 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 13:21:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595182938] [2023-12-21 13:21:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595182938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:06,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:06,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:21:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218801523] [2023-12-21 13:21:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:06,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:21:06,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:21:06,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:06,837 INFO L87 Difference]: Start difference. First operand 6317 states and 9060 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:07,726 INFO L93 Difference]: Finished difference Result 21628 states and 30942 transitions. [2023-12-21 13:21:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:21:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 13:21:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:07,744 INFO L225 Difference]: With dead ends: 21628 [2023-12-21 13:21:07,744 INFO L226 Difference]: Without dead ends: 16354 [2023-12-21 13:21:07,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:21:07,753 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1915 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:07,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 1209 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2023-12-21 13:21:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 6128. [2023-12-21 13:21:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 6127 states have (on average 1.432022196833687) internal successors, (8774), 6127 states have internal predecessors, (8774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8774 transitions. [2023-12-21 13:21:07,902 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8774 transitions. Word has length 60 [2023-12-21 13:21:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:07,902 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8774 transitions. [2023-12-21 13:21:07,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8774 transitions. [2023-12-21 13:21:07,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:21:07,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:07,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:07,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:21:07,905 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:07,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1719999038, now seen corresponding path program 1 times [2023-12-21 13:21:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:07,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603134027] [2023-12-21 13:21:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:07,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:08,095 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 13:21:08,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:08,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603134027] [2023-12-21 13:21:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603134027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:21:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360135140] [2023-12-21 13:21:08,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:08,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:21:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:21:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:08,097 INFO L87 Difference]: Start difference. First operand 6128 states and 8774 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:08,752 INFO L93 Difference]: Finished difference Result 21139 states and 30294 transitions. [2023-12-21 13:21:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:21:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 13:21:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:08,772 INFO L225 Difference]: With dead ends: 21139 [2023-12-21 13:21:08,772 INFO L226 Difference]: Without dead ends: 15921 [2023-12-21 13:21:08,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:21:08,781 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1699 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:08,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1330 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15921 states. [2023-12-21 13:21:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15921 to 5979. [2023-12-21 13:21:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5979 states, 5978 states have (on average 1.432418869187019) internal successors, (8563), 5978 states have internal predecessors, (8563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 8563 transitions. [2023-12-21 13:21:08,944 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 8563 transitions. Word has length 60 [2023-12-21 13:21:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:08,945 INFO L495 AbstractCegarLoop]: Abstraction has 5979 states and 8563 transitions. [2023-12-21 13:21:08,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 8563 transitions. [2023-12-21 13:21:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:21:08,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:08,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:08,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:21:08,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:08,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash 677385480, now seen corresponding path program 1 times [2023-12-21 13:21:08,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985548608] [2023-12-21 13:21:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:08,982 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 13:21:08,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:08,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985548608] [2023-12-21 13:21:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985548608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758618488] [2023-12-21 13:21:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:08,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:08,984 INFO L87 Difference]: Start difference. First operand 5979 states and 8563 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:09,012 INFO L93 Difference]: Finished difference Result 9026 states and 12936 transitions. [2023-12-21 13:21:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 13:21:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:09,018 INFO L225 Difference]: With dead ends: 9026 [2023-12-21 13:21:09,019 INFO L226 Difference]: Without dead ends: 5796 [2023-12-21 13:21:09,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,023 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:09,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 524 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5796 states. [2023-12-21 13:21:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5796 to 5794. [2023-12-21 13:21:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 1.4127395132055929) internal successors, (8184), 5793 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8184 transitions. [2023-12-21 13:21:09,096 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8184 transitions. Word has length 61 [2023-12-21 13:21:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 5794 states and 8184 transitions. [2023-12-21 13:21:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8184 transitions. [2023-12-21 13:21:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:21:09,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:09,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:09,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:21:09,099 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:09,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:09,099 INFO L85 PathProgramCache]: Analyzing trace with hash 732531518, now seen corresponding path program 1 times [2023-12-21 13:21:09,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:09,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313861576] [2023-12-21 13:21:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,149 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 13:21:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313861576] [2023-12-21 13:21:09,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313861576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:09,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:09,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:09,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765418442] [2023-12-21 13:21:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:09,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:09,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:09,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,151 INFO L87 Difference]: Start difference. First operand 5794 states and 8184 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:09,175 INFO L93 Difference]: Finished difference Result 8078 states and 11407 transitions. [2023-12-21 13:21:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 13:21:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:09,181 INFO L225 Difference]: With dead ends: 8078 [2023-12-21 13:21:09,181 INFO L226 Difference]: Without dead ends: 5013 [2023-12-21 13:21:09,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,184 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:09,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 513 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2023-12-21 13:21:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5011. [2023-12-21 13:21:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 1.3884231536926148) internal successors, (6956), 5010 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6956 transitions. [2023-12-21 13:21:09,226 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6956 transitions. Word has length 61 [2023-12-21 13:21:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:09,226 INFO L495 AbstractCegarLoop]: Abstraction has 5011 states and 6956 transitions. [2023-12-21 13:21:09,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6956 transitions. [2023-12-21 13:21:09,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:21:09,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:09,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:21:09,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:09,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 373087203, now seen corresponding path program 1 times [2023-12-21 13:21:09,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:09,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736787312] [2023-12-21 13:21:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,260 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 13:21:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736787312] [2023-12-21 13:21:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736787312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:09,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986383360] [2023-12-21 13:21:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,262 INFO L87 Difference]: Start difference. First operand 5011 states and 6956 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:09,283 INFO L93 Difference]: Finished difference Result 6613 states and 9182 transitions. [2023-12-21 13:21:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 13:21:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:09,288 INFO L225 Difference]: With dead ends: 6613 [2023-12-21 13:21:09,288 INFO L226 Difference]: Without dead ends: 3857 [2023-12-21 13:21:09,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,291 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 148 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:09,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2023-12-21 13:21:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3855. [2023-12-21 13:21:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3854 states have (on average 1.3645563051375194) internal successors, (5259), 3854 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 5259 transitions. [2023-12-21 13:21:09,326 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 5259 transitions. Word has length 61 [2023-12-21 13:21:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:09,326 INFO L495 AbstractCegarLoop]: Abstraction has 3855 states and 5259 transitions. [2023-12-21 13:21:09,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 5259 transitions. [2023-12-21 13:21:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:21:09,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:09,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:09,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:21:09,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:09,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 447474579, now seen corresponding path program 1 times [2023-12-21 13:21:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269774065] [2023-12-21 13:21:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,357 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 13:21:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269774065] [2023-12-21 13:21:09,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269774065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:09,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176408762] [2023-12-21 13:21:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:09,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:09,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,358 INFO L87 Difference]: Start difference. First operand 3855 states and 5259 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:09,392 INFO L93 Difference]: Finished difference Result 7098 states and 9746 transitions. [2023-12-21 13:21:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:21:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:09,397 INFO L225 Difference]: With dead ends: 7098 [2023-12-21 13:21:09,397 INFO L226 Difference]: Without dead ends: 5179 [2023-12-21 13:21:09,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:09,400 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:09,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2023-12-21 13:21:09,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 3666. [2023-12-21 13:21:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 1.3639836289222373) internal successors, (4999), 3665 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4999 transitions. [2023-12-21 13:21:09,461 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4999 transitions. Word has length 62 [2023-12-21 13:21:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:09,461 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 4999 transitions. [2023-12-21 13:21:09,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4999 transitions. [2023-12-21 13:21:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:21:09,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:09,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:21:09,465 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:09,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1495299694, now seen corresponding path program 1 times [2023-12-21 13:21:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243338537] [2023-12-21 13:21:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,927 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 13:21:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243338537] [2023-12-21 13:21:09,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243338537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:09,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:09,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:21:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372343889] [2023-12-21 13:21:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:21:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:21:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:21:09,929 INFO L87 Difference]: Start difference. First operand 3666 states and 4999 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:11,032 INFO L93 Difference]: Finished difference Result 8009 states and 11009 transitions. [2023-12-21 13:21:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 13:21:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:21:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:11,042 INFO L225 Difference]: With dead ends: 8009 [2023-12-21 13:21:11,042 INFO L226 Difference]: Without dead ends: 7668 [2023-12-21 13:21:11,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-21 13:21:11,046 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2276 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:11,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 3160 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2023-12-21 13:21:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 3613. [2023-12-21 13:21:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.3640642303433002) internal successors, (4927), 3612 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4927 transitions. [2023-12-21 13:21:11,102 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4927 transitions. Word has length 62 [2023-12-21 13:21:11,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:11,102 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 4927 transitions. [2023-12-21 13:21:11,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4927 transitions. [2023-12-21 13:21:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:21:11,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:11,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:11,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:21:11,105 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:11,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1838411058, now seen corresponding path program 1 times [2023-12-21 13:21:11,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:11,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057328167] [2023-12-21 13:21:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:11,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:11,484 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 13:21:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057328167] [2023-12-21 13:21:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057328167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:11,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:21:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297933261] [2023-12-21 13:21:11,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:11,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:21:11,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:21:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:21:11,485 INFO L87 Difference]: Start difference. First operand 3613 states and 4927 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:12,350 INFO L93 Difference]: Finished difference Result 7010 states and 9644 transitions. [2023-12-21 13:21:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:21:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:21:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:12,356 INFO L225 Difference]: With dead ends: 7010 [2023-12-21 13:21:12,357 INFO L226 Difference]: Without dead ends: 6628 [2023-12-21 13:21:12,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:21:12,359 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1838 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:12,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 2317 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:21:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2023-12-21 13:21:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 3513. [2023-12-21 13:21:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.3641799544419135) internal successors, (4791), 3512 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4791 transitions. [2023-12-21 13:21:12,396 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4791 transitions. Word has length 62 [2023-12-21 13:21:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:12,396 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4791 transitions. [2023-12-21 13:21:12,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4791 transitions. [2023-12-21 13:21:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:21:12,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:12,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:12,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:21:12,398 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:12,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:12,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1592976839, now seen corresponding path program 1 times [2023-12-21 13:21:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813745118] [2023-12-21 13:21:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:12,444 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 13:21:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:12,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813745118] [2023-12-21 13:21:12,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813745118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:12,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:12,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:12,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957774171] [2023-12-21 13:21:12,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:12,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,446 INFO L87 Difference]: Start difference. First operand 3513 states and 4791 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:12,491 INFO L93 Difference]: Finished difference Result 6608 states and 9066 transitions. [2023-12-21 13:21:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-21 13:21:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:12,496 INFO L225 Difference]: With dead ends: 6608 [2023-12-21 13:21:12,497 INFO L226 Difference]: Without dead ends: 4713 [2023-12-21 13:21:12,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,500 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 169 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:12,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 322 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2023-12-21 13:21:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3296. [2023-12-21 13:21:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3295 states have (on average 1.3635811836115326) internal successors, (4493), 3295 states have internal predecessors, (4493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4493 transitions. [2023-12-21 13:21:12,534 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4493 transitions. Word has length 62 [2023-12-21 13:21:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:12,534 INFO L495 AbstractCegarLoop]: Abstraction has 3296 states and 4493 transitions. [2023-12-21 13:21:12,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4493 transitions. [2023-12-21 13:21:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:21:12,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:12,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:21:12,537 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:12,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1504815385, now seen corresponding path program 1 times [2023-12-21 13:21:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:12,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029562807] [2023-12-21 13:21:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:12,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:12,594 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 13:21:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029562807] [2023-12-21 13:21:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029562807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:12,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:12,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:21:12,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910947029] [2023-12-21 13:21:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:12,597 INFO L87 Difference]: Start difference. First operand 3296 states and 4493 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:12,637 INFO L93 Difference]: Finished difference Result 3302 states and 4496 transitions. [2023-12-21 13:21:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-21 13:21:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:12,639 INFO L225 Difference]: With dead ends: 3302 [2023-12-21 13:21:12,639 INFO L226 Difference]: Without dead ends: 2843 [2023-12-21 13:21:12,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:12,641 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 569 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:12,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 696 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2023-12-21 13:21:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2839. [2023-12-21 13:21:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2838 states have (on average 1.3653981677237492) internal successors, (3875), 2838 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3875 transitions. [2023-12-21 13:21:12,660 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3875 transitions. Word has length 66 [2023-12-21 13:21:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:12,660 INFO L495 AbstractCegarLoop]: Abstraction has 2839 states and 3875 transitions. [2023-12-21 13:21:12,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3875 transitions. [2023-12-21 13:21:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:21:12,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:12,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:12,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:21:12,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:12,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1123021877, now seen corresponding path program 1 times [2023-12-21 13:21:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850731398] [2023-12-21 13:21:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:12,725 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 13:21:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:12,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850731398] [2023-12-21 13:21:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850731398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:12,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:12,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:12,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879899961] [2023-12-21 13:21:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:12,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:12,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,726 INFO L87 Difference]: Start difference. First operand 2839 states and 3875 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:12,745 INFO L93 Difference]: Finished difference Result 7212 states and 9957 transitions. [2023-12-21 13:21:12,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-21 13:21:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:12,749 INFO L225 Difference]: With dead ends: 7212 [2023-12-21 13:21:12,749 INFO L226 Difference]: Without dead ends: 4923 [2023-12-21 13:21:12,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,751 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 118 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:12,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 435 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2023-12-21 13:21:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4579. [2023-12-21 13:21:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4578 states have (on average 1.370249017038008) internal successors, (6273), 4578 states have internal predecessors, (6273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6273 transitions. [2023-12-21 13:21:12,789 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6273 transitions. Word has length 69 [2023-12-21 13:21:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:12,789 INFO L495 AbstractCegarLoop]: Abstraction has 4579 states and 6273 transitions. [2023-12-21 13:21:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6273 transitions. [2023-12-21 13:21:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:21:12,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:12,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:21:12,791 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:12,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1728540681, now seen corresponding path program 1 times [2023-12-21 13:21:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036168207] [2023-12-21 13:21:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:12,843 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 13:21:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036168207] [2023-12-21 13:21:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036168207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:12,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863687287] [2023-12-21 13:21:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:12,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,844 INFO L87 Difference]: Start difference. First operand 4579 states and 6273 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:12,871 INFO L93 Difference]: Finished difference Result 12227 states and 16835 transitions. [2023-12-21 13:21:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:12,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-21 13:21:12,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:12,877 INFO L225 Difference]: With dead ends: 12227 [2023-12-21 13:21:12,877 INFO L226 Difference]: Without dead ends: 8198 [2023-12-21 13:21:12,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:12,882 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 107 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:12,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-12-21 13:21:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 7608. [2023-12-21 13:21:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 7607 states have (on average 1.3688707769159985) internal successors, (10413), 7607 states have internal predecessors, (10413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 10413 transitions. [2023-12-21 13:21:12,948 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 10413 transitions. Word has length 70 [2023-12-21 13:21:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:12,948 INFO L495 AbstractCegarLoop]: Abstraction has 7608 states and 10413 transitions. [2023-12-21 13:21:12,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 10413 transitions. [2023-12-21 13:21:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:21:12,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:12,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:12,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:21:12,950 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:12,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash -644807243, now seen corresponding path program 1 times [2023-12-21 13:21:12,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:12,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209130871] [2023-12-21 13:21:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:13,022 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 13:21:13,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209130871] [2023-12-21 13:21:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209130871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:13,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990943071] [2023-12-21 13:21:13,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:13,023 INFO L87 Difference]: Start difference. First operand 7608 states and 10413 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:13,074 INFO L93 Difference]: Finished difference Result 20480 states and 27987 transitions. [2023-12-21 13:21:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:13,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-21 13:21:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:13,088 INFO L225 Difference]: With dead ends: 20480 [2023-12-21 13:21:13,088 INFO L226 Difference]: Without dead ends: 13327 [2023-12-21 13:21:13,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:13,098 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 112 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:13,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 427 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2023-12-21 13:21:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 12149. [2023-12-21 13:21:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12149 states, 12148 states have (on average 1.3538854132367468) internal successors, (16447), 12148 states have internal predecessors, (16447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12149 states to 12149 states and 16447 transitions. [2023-12-21 13:21:13,242 INFO L78 Accepts]: Start accepts. Automaton has 12149 states and 16447 transitions. Word has length 72 [2023-12-21 13:21:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:13,242 INFO L495 AbstractCegarLoop]: Abstraction has 12149 states and 16447 transitions. [2023-12-21 13:21:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 12149 states and 16447 transitions. [2023-12-21 13:21:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:21:13,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:13,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:13,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:21:13,245 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:13,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1527500110, now seen corresponding path program 1 times [2023-12-21 13:21:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688603235] [2023-12-21 13:21:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:13,380 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 13:21:13,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:13,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688603235] [2023-12-21 13:21:13,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688603235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:13,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:13,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:13,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390267129] [2023-12-21 13:21:13,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:13,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:13,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:13,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:13,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:13,382 INFO L87 Difference]: Start difference. First operand 12149 states and 16447 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:13,468 INFO L93 Difference]: Finished difference Result 26093 states and 34733 transitions. [2023-12-21 13:21:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:21:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-21 13:21:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:13,495 INFO L225 Difference]: With dead ends: 26093 [2023-12-21 13:21:13,496 INFO L226 Difference]: Without dead ends: 26091 [2023-12-21 13:21:13,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:21:13,504 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 330 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:13,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 992 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26091 states. [2023-12-21 13:21:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26091 to 13421. [2023-12-21 13:21:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13420 states have (on average 1.3203427719821161) internal successors, (17719), 13420 states have internal predecessors, (17719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 17719 transitions. [2023-12-21 13:21:13,684 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 17719 transitions. Word has length 73 [2023-12-21 13:21:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:13,684 INFO L495 AbstractCegarLoop]: Abstraction has 13421 states and 17719 transitions. [2023-12-21 13:21:13,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 17719 transitions. [2023-12-21 13:21:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:21:13,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:13,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:13,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:21:13,686 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:13,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1583760693, now seen corresponding path program 1 times [2023-12-21 13:21:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:13,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407596034] [2023-12-21 13:21:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:13,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:13,738 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 13:21:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407596034] [2023-12-21 13:21:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407596034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:13,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:13,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:13,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110018634] [2023-12-21 13:21:13,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:13,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:13,739 INFO L87 Difference]: Start difference. First operand 13421 states and 17719 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:13,800 INFO L93 Difference]: Finished difference Result 32889 states and 43333 transitions. [2023-12-21 13:21:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:13,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 13:21:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:13,818 INFO L225 Difference]: With dead ends: 32889 [2023-12-21 13:21:13,818 INFO L226 Difference]: Without dead ends: 19923 [2023-12-21 13:21:13,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:13,828 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 132 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:13,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 314 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:21:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2023-12-21 13:21:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 19709. [2023-12-21 13:21:14,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19709 states, 19708 states have (on average 1.2938400649482444) internal successors, (25499), 19708 states have internal predecessors, (25499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19709 states to 19709 states and 25499 transitions. [2023-12-21 13:21:14,031 INFO L78 Accepts]: Start accepts. Automaton has 19709 states and 25499 transitions. Word has length 74 [2023-12-21 13:21:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:14,032 INFO L495 AbstractCegarLoop]: Abstraction has 19709 states and 25499 transitions. [2023-12-21 13:21:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19709 states and 25499 transitions. [2023-12-21 13:21:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:21:14,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:14,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:14,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:21:14,037 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:14,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1684095917, now seen corresponding path program 1 times [2023-12-21 13:21:14,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:14,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686581631] [2023-12-21 13:21:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:14,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:14,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686581631] [2023-12-21 13:21:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686581631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130641636] [2023-12-21 13:21:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:14,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:14,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:14,201 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 13:21:14,228 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 13:21:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:14,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:21:14,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:15,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130641636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:15,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:15,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:21:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622649352] [2023-12-21 13:21:15,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:21:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:21:15,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:21:15,808 INFO L87 Difference]: Start difference. First operand 19709 states and 25499 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:38,911 INFO L93 Difference]: Finished difference Result 291629 states and 369212 transitions. [2023-12-21 13:21:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2023-12-21 13:21:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:21:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:39,265 INFO L225 Difference]: With dead ends: 291629 [2023-12-21 13:21:39,265 INFO L226 Difference]: Without dead ends: 280895 [2023-12-21 13:21:39,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45289 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=14951, Invalid=91651, Unknown=0, NotChecked=0, Total=106602 [2023-12-21 13:21:39,328 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 12009 mSDsluCounter, 9870 mSDsCounter, 0 mSdLazyCounter, 9448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12009 SdHoareTripleChecker+Valid, 10325 SdHoareTripleChecker+Invalid, 9573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 9448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:39,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12009 Valid, 10325 Invalid, 9573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 9448 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-21 13:21:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280895 states. [2023-12-21 13:21:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280895 to 20285. [2023-12-21 13:21:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20285 states, 20284 states have (on average 1.292250049299941) internal successors, (26212), 20284 states have internal predecessors, (26212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20285 states to 20285 states and 26212 transitions. [2023-12-21 13:21:40,860 INFO L78 Accepts]: Start accepts. Automaton has 20285 states and 26212 transitions. Word has length 93 [2023-12-21 13:21:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:40,860 INFO L495 AbstractCegarLoop]: Abstraction has 20285 states and 26212 transitions. [2023-12-21 13:21:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:21:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 20285 states and 26212 transitions. [2023-12-21 13:21:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:21:40,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:40,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:21:40,875 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 13:21:41,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:41,073 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:41,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:41,073 INFO L85 PathProgramCache]: Analyzing trace with hash -195123861, now seen corresponding path program 1 times [2023-12-21 13:21:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:41,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071668217] [2023-12-21 13:21:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:41,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:41,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071668217] [2023-12-21 13:21:41,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071668217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:41,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668972636] [2023-12-21 13:21:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:41,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:41,319 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 13:21:41,321 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 13:21:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:41,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:21:41,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:42,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668972636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:42,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:21:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750390583] [2023-12-21 13:21:42,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:42,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:21:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:21:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:21:42,856 INFO L87 Difference]: Start difference. First operand 20285 states and 26212 transitions. Second operand has 32 states, 32 states have (on average 7.8125) internal successors, (250), 31 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:20,821 INFO L93 Difference]: Finished difference Result 235240 states and 297056 transitions. [2023-12-21 13:22:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 473 states. [2023-12-21 13:22:20,821 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.8125) internal successors, (250), 31 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:22:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:21,136 INFO L225 Difference]: With dead ends: 235240 [2023-12-21 13:22:21,136 INFO L226 Difference]: Without dead ends: 224650 [2023-12-21 13:22:21,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119288 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=32544, Invalid=219962, Unknown=0, NotChecked=0, Total=252506 [2023-12-21 13:22:21,198 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 11759 mSDsluCounter, 10158 mSDsCounter, 0 mSdLazyCounter, 9426 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11759 SdHoareTripleChecker+Valid, 10620 SdHoareTripleChecker+Invalid, 9558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 9426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:21,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11759 Valid, 10620 Invalid, 9558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 9426 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-21 13:22:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224650 states. [2023-12-21 13:22:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224650 to 43219. [2023-12-21 13:22:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43219 states, 43218 states have (on average 1.2913832199546484) internal successors, (55811), 43218 states have internal predecessors, (55811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43219 states to 43219 states and 55811 transitions. [2023-12-21 13:22:22,647 INFO L78 Accepts]: Start accepts. Automaton has 43219 states and 55811 transitions. Word has length 93 [2023-12-21 13:22:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:22,647 INFO L495 AbstractCegarLoop]: Abstraction has 43219 states and 55811 transitions. [2023-12-21 13:22:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.8125) internal successors, (250), 31 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 43219 states and 55811 transitions. [2023-12-21 13:22:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:22:22,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:22,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:22,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:22,861 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,SelfDestructingSolverStorable30 [2023-12-21 13:22:22,863 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash 939129145, now seen corresponding path program 1 times [2023-12-21 13:22:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127944399] [2023-12-21 13:22:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:23,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:23,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127944399] [2023-12-21 13:22:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127944399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:23,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:22:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623639412] [2023-12-21 13:22:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:23,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:22:23,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:22:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:22:23,074 INFO L87 Difference]: Start difference. First operand 43219 states and 55811 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:24,140 INFO L93 Difference]: Finished difference Result 123089 states and 157862 transitions. [2023-12-21 13:22:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 13:22:24,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 13:22:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:24,433 INFO L225 Difference]: With dead ends: 123089 [2023-12-21 13:22:24,434 INFO L226 Difference]: Without dead ends: 105110 [2023-12-21 13:22:24,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:22:24,458 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1083 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:24,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1534 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105110 states. [2023-12-21 13:22:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105110 to 63981. [2023-12-21 13:22:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63981 states, 63980 states have (on average 1.2910440762738356) internal successors, (82601), 63980 states have internal predecessors, (82601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63981 states to 63981 states and 82601 transitions. [2023-12-21 13:22:25,390 INFO L78 Accepts]: Start accepts. Automaton has 63981 states and 82601 transitions. Word has length 93 [2023-12-21 13:22:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:25,390 INFO L495 AbstractCegarLoop]: Abstraction has 63981 states and 82601 transitions. [2023-12-21 13:22:25,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 63981 states and 82601 transitions. [2023-12-21 13:22:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:22:25,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:25,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:25,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:22:25,401 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:25,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 117499966, now seen corresponding path program 1 times [2023-12-21 13:22:25,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:25,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510882286] [2023-12-21 13:22:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:25,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:22:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510882286] [2023-12-21 13:22:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510882286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:25,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675134885] [2023-12-21 13:22:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:25,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:25,448 INFO L87 Difference]: Start difference. First operand 63981 states and 82601 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:25,852 INFO L93 Difference]: Finished difference Result 125653 states and 162546 transitions. [2023-12-21 13:22:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:25,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:22:25,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:26,130 INFO L225 Difference]: With dead ends: 125653 [2023-12-21 13:22:26,130 INFO L226 Difference]: Without dead ends: 63346 [2023-12-21 13:22:26,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:26,154 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 158 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:26,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 198 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:22:26,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63346 states. [2023-12-21 13:22:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63346 to 63346. [2023-12-21 13:22:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63346 states, 63345 states have (on average 1.2787749625069067) internal successors, (81004), 63345 states have internal predecessors, (81004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63346 states to 63346 states and 81004 transitions. [2023-12-21 13:22:26,841 INFO L78 Accepts]: Start accepts. Automaton has 63346 states and 81004 transitions. Word has length 94 [2023-12-21 13:22:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:26,841 INFO L495 AbstractCegarLoop]: Abstraction has 63346 states and 81004 transitions. [2023-12-21 13:22:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 63346 states and 81004 transitions. [2023-12-21 13:22:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:22:26,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:26,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:22:26,851 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:26,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1857546055, now seen corresponding path program 1 times [2023-12-21 13:22:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456551423] [2023-12-21 13:22:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:27,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456551423] [2023-12-21 13:22:27,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456551423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365459744] [2023-12-21 13:22:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:27,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:27,097 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 13:22:27,108 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 13:22:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:27,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 13:22:27,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:22:27,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:22:27,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365459744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:27,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:22:27,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 16 [2023-12-21 13:22:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957511016] [2023-12-21 13:22:27,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:22:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:27,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:22:27,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-21 13:22:27,826 INFO L87 Difference]: Start difference. First operand 63346 states and 81004 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:28,447 INFO L93 Difference]: Finished difference Result 137481 states and 175889 transitions. [2023-12-21 13:22:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:22:28,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:22:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:28,599 INFO L225 Difference]: With dead ends: 137481 [2023-12-21 13:22:28,600 INFO L226 Difference]: Without dead ends: 128163 [2023-12-21 13:22:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:22:28,629 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1090 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:28,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1545 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:22:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128163 states. [2023-12-21 13:22:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128163 to 67665. [2023-12-21 13:22:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67665 states, 67664 states have (on average 1.2785971860960037) internal successors, (86515), 67664 states have internal predecessors, (86515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:29,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67665 states to 67665 states and 86515 transitions. [2023-12-21 13:22:29,710 INFO L78 Accepts]: Start accepts. Automaton has 67665 states and 86515 transitions. Word has length 94 [2023-12-21 13:22:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:29,710 INFO L495 AbstractCegarLoop]: Abstraction has 67665 states and 86515 transitions. [2023-12-21 13:22:29,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 67665 states and 86515 transitions. [2023-12-21 13:22:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:22:29,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:29,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:29,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:22:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:29,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:29,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 718649262, now seen corresponding path program 1 times [2023-12-21 13:22:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756687597] [2023-12-21 13:22:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:29,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:29,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756687597] [2023-12-21 13:22:29,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756687597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:29,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:29,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:29,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390727353] [2023-12-21 13:22:29,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:29,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:29,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:29,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:29,985 INFO L87 Difference]: Start difference. First operand 67665 states and 86515 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:30,291 INFO L93 Difference]: Finished difference Result 133682 states and 171114 transitions. [2023-12-21 13:22:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:22:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:30,369 INFO L225 Difference]: With dead ends: 133682 [2023-12-21 13:22:30,370 INFO L226 Difference]: Without dead ends: 67667 [2023-12-21 13:22:30,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:30,644 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 92 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:30,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 356 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:22:30,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67667 states. [2023-12-21 13:22:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67667 to 65380. [2023-12-21 13:22:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65380 states, 65379 states have (on average 1.2595328775294818) internal successors, (82347), 65379 states have internal predecessors, (82347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65380 states to 65380 states and 82347 transitions. [2023-12-21 13:22:31,381 INFO L78 Accepts]: Start accepts. Automaton has 65380 states and 82347 transitions. Word has length 94 [2023-12-21 13:22:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:31,382 INFO L495 AbstractCegarLoop]: Abstraction has 65380 states and 82347 transitions. [2023-12-21 13:22:31,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 65380 states and 82347 transitions. [2023-12-21 13:22:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:22:31,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:31,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:31,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:22:31,388 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:31,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1360006503, now seen corresponding path program 1 times [2023-12-21 13:22:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250953023] [2023-12-21 13:22:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:31,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250953023] [2023-12-21 13:22:31,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250953023] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:31,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111268520] [2023-12-21 13:22:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:31,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:31,511 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 13:22:31,532 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 13:22:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:31,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 13:22:31,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:22:32,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:22:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111268520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:32,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:22:32,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2023-12-21 13:22:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720600142] [2023-12-21 13:22:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:32,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:22:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:22:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:22:32,467 INFO L87 Difference]: Start difference. First operand 65380 states and 82347 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:33,389 INFO L93 Difference]: Finished difference Result 140458 states and 177256 transitions. [2023-12-21 13:22:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:22:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:22:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:33,477 INFO L225 Difference]: With dead ends: 140458 [2023-12-21 13:22:33,477 INFO L226 Difference]: Without dead ends: 89062 [2023-12-21 13:22:33,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:22:33,497 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1711 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 1888 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:22:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89062 states. [2023-12-21 13:22:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89062 to 70218. [2023-12-21 13:22:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70218 states, 70217 states have (on average 1.2583704800831708) internal successors, (88359), 70217 states have internal predecessors, (88359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70218 states to 70218 states and 88359 transitions. [2023-12-21 13:22:34,196 INFO L78 Accepts]: Start accepts. Automaton has 70218 states and 88359 transitions. Word has length 94 [2023-12-21 13:22:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:34,196 INFO L495 AbstractCegarLoop]: Abstraction has 70218 states and 88359 transitions. [2023-12-21 13:22:34,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 70218 states and 88359 transitions. [2023-12-21 13:22:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:22:34,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:34,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:34,205 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 13:22:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:34,405 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:34,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2025466981, now seen corresponding path program 1 times [2023-12-21 13:22:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385524127] [2023-12-21 13:22:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:34,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385524127] [2023-12-21 13:22:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385524127] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:34,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529575484] [2023-12-21 13:22:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:34,474 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 13:22:34,496 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 13:22:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:34,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 13:22:34,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:34,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529575484] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:34,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:34,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-12-21 13:22:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413242070] [2023-12-21 13:22:34,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:22:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:22:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:22:34,957 INFO L87 Difference]: Start difference. First operand 70218 states and 88359 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:35,461 INFO L93 Difference]: Finished difference Result 201443 states and 251411 transitions. [2023-12-21 13:22:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:22:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:22:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:35,611 INFO L225 Difference]: With dead ends: 201443 [2023-12-21 13:22:35,612 INFO L226 Difference]: Without dead ends: 132267 [2023-12-21 13:22:35,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:22:35,656 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 363 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:35,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 869 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:22:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132267 states. [2023-12-21 13:22:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132267 to 102901. [2023-12-21 13:22:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102901 states, 102900 states have (on average 1.2500485908649175) internal successors, (128630), 102900 states have internal predecessors, (128630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102901 states to 102901 states and 128630 transitions. [2023-12-21 13:22:36,963 INFO L78 Accepts]: Start accepts. Automaton has 102901 states and 128630 transitions. Word has length 94 [2023-12-21 13:22:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:36,963 INFO L495 AbstractCegarLoop]: Abstraction has 102901 states and 128630 transitions. [2023-12-21 13:22:36,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 102901 states and 128630 transitions. [2023-12-21 13:22:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:22:36,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:36,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:36,975 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 13:22:37,170 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,SelfDestructingSolverStorable36 [2023-12-21 13:22:37,170 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:37,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash -290839548, now seen corresponding path program 1 times [2023-12-21 13:22:37,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:37,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882664354] [2023-12-21 13:22:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:37,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882664354] [2023-12-21 13:22:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882664354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099349112] [2023-12-21 13:22:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:37,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:37,218 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 13:22:37,221 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 13:22:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:37,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:22:37,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:37,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:37,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099349112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:37,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:37,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:22:37,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903837990] [2023-12-21 13:22:37,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:37,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:22:37,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:37,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:22:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:22:37,758 INFO L87 Difference]: Start difference. First operand 102901 states and 128630 transitions. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:38,611 INFO L93 Difference]: Finished difference Result 240093 states and 297110 transitions. [2023-12-21 13:22:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:22:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 13:22:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:38,788 INFO L225 Difference]: With dead ends: 240093 [2023-12-21 13:22:38,788 INFO L226 Difference]: Without dead ends: 163180 [2023-12-21 13:22:38,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:22:38,842 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 2349 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:38,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2349 Valid, 771 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:22:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163180 states. [2023-12-21 13:22:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163180 to 109445. [2023-12-21 13:22:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109445 states, 109444 states have (on average 1.2435766236614159) internal successors, (136102), 109444 states have internal predecessors, (136102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109445 states to 109445 states and 136102 transitions. [2023-12-21 13:22:40,453 INFO L78 Accepts]: Start accepts. Automaton has 109445 states and 136102 transitions. Word has length 102 [2023-12-21 13:22:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:40,453 INFO L495 AbstractCegarLoop]: Abstraction has 109445 states and 136102 transitions. [2023-12-21 13:22:40,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 109445 states and 136102 transitions. [2023-12-21 13:22:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:22:40,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:40,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:40,465 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 13:22:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 13:22:40,660 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:40,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1970594920, now seen corresponding path program 1 times [2023-12-21 13:22:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570637550] [2023-12-21 13:22:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:40,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:40,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570637550] [2023-12-21 13:22:40,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570637550] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:40,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621829561] [2023-12-21 13:22:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:40,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:40,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:40,706 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 13:22:40,733 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 13:22:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:40,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:22:40,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:41,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:41,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621829561] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:41,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:41,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:22:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660863513] [2023-12-21 13:22:41,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:41,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:22:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:22:41,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:22:41,142 INFO L87 Difference]: Start difference. First operand 109445 states and 136102 transitions. Second operand has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 14 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:41,952 INFO L93 Difference]: Finished difference Result 238642 states and 296299 transitions. [2023-12-21 13:22:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:22:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 14 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 13:22:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:42,291 INFO L225 Difference]: With dead ends: 238642 [2023-12-21 13:22:42,292 INFO L226 Difference]: Without dead ends: 129843 [2023-12-21 13:22:42,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:22:42,310 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 2262 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:42,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 761 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:22:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129843 states. [2023-12-21 13:22:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129843 to 94423. [2023-12-21 13:22:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94423 states, 94422 states have (on average 1.2169727394039525) internal successors, (114909), 94422 states have internal predecessors, (114909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94423 states to 94423 states and 114909 transitions. [2023-12-21 13:22:43,412 INFO L78 Accepts]: Start accepts. Automaton has 94423 states and 114909 transitions. Word has length 103 [2023-12-21 13:22:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:43,413 INFO L495 AbstractCegarLoop]: Abstraction has 94423 states and 114909 transitions. [2023-12-21 13:22:43,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.285714285714285) internal successors, (284), 14 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 94423 states and 114909 transitions. [2023-12-21 13:22:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:22:43,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:43,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:43,424 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 13:22:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:43,619 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:43,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1247812981, now seen corresponding path program 1 times [2023-12-21 13:22:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682151650] [2023-12-21 13:22:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682151650] [2023-12-21 13:22:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682151650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:43,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930824309] [2023-12-21 13:22:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:43,651 INFO L87 Difference]: Start difference. First operand 94423 states and 114909 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:44,220 INFO L93 Difference]: Finished difference Result 179604 states and 218379 transitions. [2023-12-21 13:22:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-21 13:22:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:44,383 INFO L225 Difference]: With dead ends: 179604 [2023-12-21 13:22:44,383 INFO L226 Difference]: Without dead ends: 140106 [2023-12-21 13:22:44,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:44,430 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 94 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:44,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 421 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:22:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140106 states. [2023-12-21 13:22:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140106 to 96259. [2023-12-21 13:22:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96259 states, 96258 states have (on average 1.2098630763157348) internal successors, (116459), 96258 states have internal predecessors, (116459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96259 states to 96259 states and 116459 transitions. [2023-12-21 13:22:45,755 INFO L78 Accepts]: Start accepts. Automaton has 96259 states and 116459 transitions. Word has length 105 [2023-12-21 13:22:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:45,755 INFO L495 AbstractCegarLoop]: Abstraction has 96259 states and 116459 transitions. [2023-12-21 13:22:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 96259 states and 116459 transitions. [2023-12-21 13:22:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:22:45,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:45,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:45,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 13:22:45,761 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:45,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 680206858, now seen corresponding path program 1 times [2023-12-21 13:22:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:45,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10241599] [2023-12-21 13:22:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:22:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10241599] [2023-12-21 13:22:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10241599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:45,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:45,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:22:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762840605] [2023-12-21 13:22:45,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:22:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:22:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:22:45,809 INFO L87 Difference]: Start difference. First operand 96259 states and 116459 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:46,567 INFO L93 Difference]: Finished difference Result 213051 states and 256742 transitions. [2023-12-21 13:22:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:22:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:22:46,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:46,779 INFO L225 Difference]: With dead ends: 213051 [2023-12-21 13:22:46,779 INFO L226 Difference]: Without dead ends: 179482 [2023-12-21 13:22:46,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:22:46,826 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 333 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:46,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 485 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:22:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179482 states. [2023-12-21 13:22:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179482 to 108941. [2023-12-21 13:22:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108941 states, 108940 states have (on average 1.2080135854598861) internal successors, (131601), 108940 states have internal predecessors, (131601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108941 states to 108941 states and 131601 transitions. [2023-12-21 13:22:48,431 INFO L78 Accepts]: Start accepts. Automaton has 108941 states and 131601 transitions. Word has length 106 [2023-12-21 13:22:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:48,431 INFO L495 AbstractCegarLoop]: Abstraction has 108941 states and 131601 transitions. [2023-12-21 13:22:48,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:22:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 108941 states and 131601 transitions. [2023-12-21 13:22:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:22:48,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:48,437 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:22:48,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 13:22:48,438 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:48,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1316768773, now seen corresponding path program 1 times [2023-12-21 13:22:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629848059] [2023-12-21 13:22:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629848059] [2023-12-21 13:22:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629848059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:22:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655695218] [2023-12-21 13:22:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:49,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:22:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:22:49,067 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 13:22:49,088 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 13:22:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:49,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:22:49,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:22:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:49,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:22:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655695218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:22:50,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:22:50,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-12-21 13:22:50,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519901380] [2023-12-21 13:22:50,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:22:50,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 13:22:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 13:22:50,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:22:50,351 INFO L87 Difference]: Start difference. First operand 108941 states and 131601 transitions. Second operand has 35 states, 35 states have (on average 8.371428571428572) internal successors, (293), 35 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:05,135 INFO L93 Difference]: Finished difference Result 619839 states and 735453 transitions. [2023-12-21 13:24:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 699 states. [2023-12-21 13:24:05,135 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.371428571428572) internal successors, (293), 35 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:24:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:06,473 INFO L225 Difference]: With dead ends: 619839 [2023-12-21 13:24:06,473 INFO L226 Difference]: Without dead ends: 599061 [2023-12-21 13:24:06,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 730 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248725 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=48853, Invalid=486239, Unknown=0, NotChecked=0, Total=535092 [2023-12-21 13:24:06,585 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 20467 mSDsluCounter, 12440 mSDsCounter, 0 mSdLazyCounter, 14018 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20467 SdHoareTripleChecker+Valid, 12955 SdHoareTripleChecker+Invalid, 14245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 14018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:06,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20467 Valid, 12955 Invalid, 14245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 14018 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-21 13:24:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599061 states. [2023-12-21 13:24:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599061 to 106665. [2023-12-21 13:24:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106665 states, 106664 states have (on average 1.208017700442511) internal successors, (128852), 106664 states have internal predecessors, (128852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106665 states to 106665 states and 128852 transitions. [2023-12-21 13:24:10,015 INFO L78 Accepts]: Start accepts. Automaton has 106665 states and 128852 transitions. Word has length 106 [2023-12-21 13:24:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 106665 states and 128852 transitions. [2023-12-21 13:24:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.371428571428572) internal successors, (293), 35 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 106665 states and 128852 transitions. [2023-12-21 13:24:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:24:10,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:10,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:10,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:24:10,220 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,SelfDestructingSolverStorable41 [2023-12-21 13:24:10,221 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:10,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -816509517, now seen corresponding path program 1 times [2023-12-21 13:24:10,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:10,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126078685] [2023-12-21 13:24:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:10,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:24:10,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126078685] [2023-12-21 13:24:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126078685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:10,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:10,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442746313] [2023-12-21 13:24:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:10,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:10,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:10,261 INFO L87 Difference]: Start difference. First operand 106665 states and 128852 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:11,149 INFO L93 Difference]: Finished difference Result 243510 states and 293789 transitions. [2023-12-21 13:24:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:24:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:11,441 INFO L225 Difference]: With dead ends: 243510 [2023-12-21 13:24:11,441 INFO L226 Difference]: Without dead ends: 207722 [2023-12-21 13:24:11,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:24:11,492 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 390 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:11,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 512 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:24:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207722 states. [2023-12-21 13:24:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207722 to 119269. [2023-12-21 13:24:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119269 states, 119268 states have (on average 1.208211758392863) internal successors, (144101), 119268 states have internal predecessors, (144101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119269 states to 119269 states and 144101 transitions. [2023-12-21 13:24:13,204 INFO L78 Accepts]: Start accepts. Automaton has 119269 states and 144101 transitions. Word has length 106 [2023-12-21 13:24:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:13,205 INFO L495 AbstractCegarLoop]: Abstraction has 119269 states and 144101 transitions. [2023-12-21 13:24:13,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 119269 states and 144101 transitions. [2023-12-21 13:24:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:24:13,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:13,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:13,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 13:24:13,211 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:13,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 842711896, now seen corresponding path program 1 times [2023-12-21 13:24:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:13,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410582325] [2023-12-21 13:24:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410582325] [2023-12-21 13:24:13,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410582325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900230811] [2023-12-21 13:24:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:13,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:13,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:13,893 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 13:24:13,896 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 13:24:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:14,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:24:14,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:14,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:24:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900230811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:24:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 25 [2023-12-21 13:24:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017011446] [2023-12-21 13:24:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:14,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:24:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:24:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:24:14,428 INFO L87 Difference]: Start difference. First operand 119269 states and 144101 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:15,313 INFO L93 Difference]: Finished difference Result 170539 states and 206651 transitions. [2023-12-21 13:24:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:24:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:24:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:15,489 INFO L225 Difference]: With dead ends: 170539 [2023-12-21 13:24:15,490 INFO L226 Difference]: Without dead ends: 149480 [2023-12-21 13:24:15,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:24:15,525 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 928 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:15,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 3016 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:24:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149480 states. [2023-12-21 13:24:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149480 to 134021. [2023-12-21 13:24:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134021 states, 134020 states have (on average 1.2096179674675422) internal successors, (162113), 134020 states have internal predecessors, (162113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134021 states to 134021 states and 162113 transitions. [2023-12-21 13:24:17,190 INFO L78 Accepts]: Start accepts. Automaton has 134021 states and 162113 transitions. Word has length 106 [2023-12-21 13:24:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 134021 states and 162113 transitions. [2023-12-21 13:24:17,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 134021 states and 162113 transitions. [2023-12-21 13:24:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:24:17,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:17,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:17,203 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 13:24:17,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:17,401 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:17,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash 589627990, now seen corresponding path program 1 times [2023-12-21 13:24:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078660709] [2023-12-21 13:24:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:17,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078660709] [2023-12-21 13:24:17,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078660709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:17,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:17,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:24:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779110682] [2023-12-21 13:24:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:24:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:24:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:24:17,765 INFO L87 Difference]: Start difference. First operand 134021 states and 162113 transitions. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:26,158 INFO L93 Difference]: Finished difference Result 258165 states and 309225 transitions. [2023-12-21 13:24:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2023-12-21 13:24:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-21 13:24:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:26,688 INFO L225 Difference]: With dead ends: 258165 [2023-12-21 13:24:26,688 INFO L226 Difference]: Without dead ends: 245247 [2023-12-21 13:24:26,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10892 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3863, Invalid=23197, Unknown=0, NotChecked=0, Total=27060 [2023-12-21 13:24:26,738 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 3737 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 3385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3737 Valid, 3140 Invalid, 3385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 13:24:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245247 states. [2023-12-21 13:24:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245247 to 133894. [2023-12-21 13:24:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133894 states, 133893 states have (on average 1.2096823583010314) internal successors, (161968), 133893 states have internal predecessors, (161968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133894 states to 133894 states and 161968 transitions. [2023-12-21 13:24:28,688 INFO L78 Accepts]: Start accepts. Automaton has 133894 states and 161968 transitions. Word has length 106 [2023-12-21 13:24:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 133894 states and 161968 transitions. [2023-12-21 13:24:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 133894 states and 161968 transitions. [2023-12-21 13:24:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 13:24:28,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:28,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:28,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:24:28,694 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:28,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:28,695 INFO L85 PathProgramCache]: Analyzing trace with hash 280537523, now seen corresponding path program 1 times [2023-12-21 13:24:28,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:28,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061646522] [2023-12-21 13:24:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:24:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061646522] [2023-12-21 13:24:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061646522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844371829] [2023-12-21 13:24:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:28,724 INFO L87 Difference]: Start difference. First operand 133894 states and 161968 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:29,463 INFO L93 Difference]: Finished difference Result 257250 states and 311228 transitions. [2023-12-21 13:24:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:29,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-21 13:24:29,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:29,613 INFO L225 Difference]: With dead ends: 257250 [2023-12-21 13:24:29,613 INFO L226 Difference]: Without dead ends: 123942 [2023-12-21 13:24:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:29,674 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 134 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:29,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 142 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123942 states. [2023-12-21 13:24:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123942 to 123862. [2023-12-21 13:24:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123862 states, 123861 states have (on average 1.1966317081244298) internal successors, (148216), 123861 states have internal predecessors, (148216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123862 states to 123862 states and 148216 transitions. [2023-12-21 13:24:31,378 INFO L78 Accepts]: Start accepts. Automaton has 123862 states and 148216 transitions. Word has length 107 [2023-12-21 13:24:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:31,378 INFO L495 AbstractCegarLoop]: Abstraction has 123862 states and 148216 transitions. [2023-12-21 13:24:31,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 123862 states and 148216 transitions. [2023-12-21 13:24:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 13:24:31,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:31,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:31,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 13:24:31,382 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:31,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1604789192, now seen corresponding path program 1 times [2023-12-21 13:24:31,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:31,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096181478] [2023-12-21 13:24:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096181478] [2023-12-21 13:24:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096181478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:31,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069705599] [2023-12-21 13:24:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:31,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:31,700 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 13:24:31,705 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 13:24:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:31,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:24:31,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:32,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:24:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:32,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069705599] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:24:32,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:24:32,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 32 [2023-12-21 13:24:32,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642977190] [2023-12-21 13:24:32,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:24:32,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:24:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:24:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:24:32,851 INFO L87 Difference]: Start difference. First operand 123862 states and 148216 transitions. Second operand has 32 states, 32 states have (on average 8.21875) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:34,916 INFO L93 Difference]: Finished difference Result 246871 states and 295466 transitions. [2023-12-21 13:24:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 13:24:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.21875) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-12-21 13:24:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:35,369 INFO L225 Difference]: With dead ends: 246871 [2023-12-21 13:24:35,369 INFO L226 Difference]: Without dead ends: 214977 [2023-12-21 13:24:35,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 13:24:35,413 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 2561 mSDsluCounter, 7558 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 8131 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:35,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 8131 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:24:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214977 states. [2023-12-21 13:24:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214977 to 129053. [2023-12-21 13:24:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129053 states, 129052 states have (on average 1.1948439388773517) internal successors, (154197), 129052 states have internal predecessors, (154197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129053 states to 129053 states and 154197 transitions. [2023-12-21 13:24:37,240 INFO L78 Accepts]: Start accepts. Automaton has 129053 states and 154197 transitions. Word has length 107 [2023-12-21 13:24:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:37,240 INFO L495 AbstractCegarLoop]: Abstraction has 129053 states and 154197 transitions. [2023-12-21 13:24:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.21875) internal successors, (263), 32 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 129053 states and 154197 transitions. [2023-12-21 13:24:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:24:37,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:37,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:37,252 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 13:24:37,448 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,SelfDestructingSolverStorable46 [2023-12-21 13:24:37,448 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:37,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -422583308, now seen corresponding path program 1 times [2023-12-21 13:24:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:37,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180113616] [2023-12-21 13:24:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:37,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:37,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:37,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180113616] [2023-12-21 13:24:37,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180113616] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:37,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439474976] [2023-12-21 13:24:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:37,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:37,817 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 13:24:37,818 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 13:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:37,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:24:37,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:38,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:24:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439474976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:24:39,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:24:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 37 [2023-12-21 13:24:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181532140] [2023-12-21 13:24:39,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:24:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:24:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:24:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:24:39,053 INFO L87 Difference]: Start difference. First operand 129053 states and 154197 transitions. Second operand has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:40,717 INFO L93 Difference]: Finished difference Result 278699 states and 334598 transitions. [2023-12-21 13:24:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:24:40,717 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 13:24:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:41,203 INFO L225 Difference]: With dead ends: 278699 [2023-12-21 13:24:41,203 INFO L226 Difference]: Without dead ends: 254370 [2023-12-21 13:24:41,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 13:24:41,255 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2849 mSDsluCounter, 5096 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 5427 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:24:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254370 states. [2023-12-21 13:24:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254370 to 129080. [2023-12-21 13:24:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129080 states, 129079 states have (on average 1.1948031825471224) internal successors, (154224), 129079 states have internal predecessors, (154224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129080 states to 129080 states and 154224 transitions. [2023-12-21 13:24:43,114 INFO L78 Accepts]: Start accepts. Automaton has 129080 states and 154224 transitions. Word has length 108 [2023-12-21 13:24:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:43,114 INFO L495 AbstractCegarLoop]: Abstraction has 129080 states and 154224 transitions. [2023-12-21 13:24:43,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.891891891891892) internal successors, (292), 37 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 129080 states and 154224 transitions. [2023-12-21 13:24:43,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:24:43,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:43,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:43,126 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 13:24:43,320 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,SelfDestructingSolverStorable47 [2023-12-21 13:24:43,320 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:43,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 261614725, now seen corresponding path program 1 times [2023-12-21 13:24:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165504871] [2023-12-21 13:24:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:43,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:43,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165504871] [2023-12-21 13:24:43,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165504871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:43,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:43,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 13:24:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967450834] [2023-12-21 13:24:43,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:43,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 13:24:43,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:43,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 13:24:43,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:24:43,892 INFO L87 Difference]: Start difference. First operand 129080 states and 154224 transitions. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:44,888 INFO L93 Difference]: Finished difference Result 159044 states and 190406 transitions. [2023-12-21 13:24:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:24:44,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 13:24:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:45,315 INFO L225 Difference]: With dead ends: 159044 [2023-12-21 13:24:45,316 INFO L226 Difference]: Without dead ends: 148114 [2023-12-21 13:24:45,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:24:45,341 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1454 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:45,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3599 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:24:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148114 states. [2023-12-21 13:24:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148114 to 134960. [2023-12-21 13:24:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134960 states, 134959 states have (on average 1.1944368289628702) internal successors, (161200), 134959 states have internal predecessors, (161200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134960 states to 134960 states and 161200 transitions. [2023-12-21 13:24:46,763 INFO L78 Accepts]: Start accepts. Automaton has 134960 states and 161200 transitions. Word has length 108 [2023-12-21 13:24:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:46,763 INFO L495 AbstractCegarLoop]: Abstraction has 134960 states and 161200 transitions. [2023-12-21 13:24:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 134960 states and 161200 transitions. [2023-12-21 13:24:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:24:46,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:46,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:46,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 13:24:46,768 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:46,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:46,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1683147867, now seen corresponding path program 1 times [2023-12-21 13:24:46,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:46,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566516862] [2023-12-21 13:24:46,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:46,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566516862] [2023-12-21 13:24:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566516862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:24:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189842162] [2023-12-21 13:24:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:24:47,580 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 13:24:47,591 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 13:24:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:47,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:24:47,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:24:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:48,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:24:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189842162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:24:48,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:24:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 12] total 42 [2023-12-21 13:24:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331912236] [2023-12-21 13:24:48,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:24:48,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 13:24:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 13:24:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 13:24:48,883 INFO L87 Difference]: Start difference. First operand 134960 states and 161200 transitions. Second operand has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:06,584 INFO L93 Difference]: Finished difference Result 277484 states and 330914 transitions. [2023-12-21 13:25:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2023-12-21 13:25:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 13:25:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:06,922 INFO L225 Difference]: With dead ends: 277484 [2023-12-21 13:25:06,922 INFO L226 Difference]: Without dead ends: 248710 [2023-12-21 13:25:06,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11385 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=6087, Invalid=30969, Unknown=0, NotChecked=0, Total=37056 [2023-12-21 13:25:06,993 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 6107 mSDsluCounter, 26344 mSDsCounter, 0 mSdLazyCounter, 8139 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6107 SdHoareTripleChecker+Valid, 27426 SdHoareTripleChecker+Invalid, 8160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 8139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:06,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6107 Valid, 27426 Invalid, 8160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 8139 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-21 13:25:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248710 states. [2023-12-21 13:25:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248710 to 131842. [2023-12-21 13:25:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131842 states, 131841 states have (on average 1.1929748712464256) internal successors, (157283), 131841 states have internal predecessors, (157283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131842 states to 131842 states and 157283 transitions. [2023-12-21 13:25:09,009 INFO L78 Accepts]: Start accepts. Automaton has 131842 states and 157283 transitions. Word has length 108 [2023-12-21 13:25:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:09,010 INFO L495 AbstractCegarLoop]: Abstraction has 131842 states and 157283 transitions. [2023-12-21 13:25:09,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 131842 states and 157283 transitions. [2023-12-21 13:25:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:25:09,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:09,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:09,022 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 13:25:09,216 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,SelfDestructingSolverStorable49 [2023-12-21 13:25:09,217 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:09,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 903233107, now seen corresponding path program 1 times [2023-12-21 13:25:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219725942] [2023-12-21 13:25:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:09,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:09,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219725942] [2023-12-21 13:25:09,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219725942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:09,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106025275] [2023-12-21 13:25:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:09,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:09,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:09,493 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 13:25:09,495 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 13:25:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:09,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:25:09,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:10,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106025275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:11,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-21 13:25:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913729950] [2023-12-21 13:25:11,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:25:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:25:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:25:11,268 INFO L87 Difference]: Start difference. First operand 131842 states and 157283 transitions. Second operand has 30 states, 30 states have (on average 8.966666666666667) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:15,142 INFO L93 Difference]: Finished difference Result 304824 states and 363531 transitions. [2023-12-21 13:25:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-21 13:25:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.966666666666667) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-12-21 13:25:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:15,447 INFO L225 Difference]: With dead ends: 304824 [2023-12-21 13:25:15,447 INFO L226 Difference]: Without dead ends: 241551 [2023-12-21 13:25:15,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1148, Invalid=3822, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 13:25:15,522 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 4768 mSDsluCounter, 3039 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:15,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 3315 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:25:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241551 states. [2023-12-21 13:25:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241551 to 140782. [2023-12-21 13:25:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140782 states, 140781 states have (on average 1.1917801407860436) internal successors, (167780), 140781 states have internal predecessors, (167780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140782 states to 140782 states and 167780 transitions. [2023-12-21 13:25:17,744 INFO L78 Accepts]: Start accepts. Automaton has 140782 states and 167780 transitions. Word has length 110 [2023-12-21 13:25:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:17,744 INFO L495 AbstractCegarLoop]: Abstraction has 140782 states and 167780 transitions. [2023-12-21 13:25:17,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.966666666666667) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 140782 states and 167780 transitions. [2023-12-21 13:25:17,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:25:17,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:17,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:17,757 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 13:25:17,952 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,SelfDestructingSolverStorable50 [2023-12-21 13:25:17,952 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:17,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1486339709, now seen corresponding path program 1 times [2023-12-21 13:25:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077030802] [2023-12-21 13:25:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077030802] [2023-12-21 13:25:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077030802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:25:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736296009] [2023-12-21 13:25:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:25:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:17,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:25:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:18,000 INFO L87 Difference]: Start difference. First operand 140782 states and 167780 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:18,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:18,338 INFO L93 Difference]: Finished difference Result 180124 states and 214249 transitions. [2023-12-21 13:25:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:25:18,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 13:25:18,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:18,378 INFO L225 Difference]: With dead ends: 180124 [2023-12-21 13:25:18,378 INFO L226 Difference]: Without dead ends: 40425 [2023-12-21 13:25:18,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:25:18,694 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 65 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:18,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 302 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:25:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40425 states. [2023-12-21 13:25:18,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40425 to 40003. [2023-12-21 13:25:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40003 states, 40002 states have (on average 1.1591170441477927) internal successors, (46367), 40002 states have internal predecessors, (46367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40003 states to 40003 states and 46367 transitions. [2023-12-21 13:25:19,014 INFO L78 Accepts]: Start accepts. Automaton has 40003 states and 46367 transitions. Word has length 111 [2023-12-21 13:25:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:19,014 INFO L495 AbstractCegarLoop]: Abstraction has 40003 states and 46367 transitions. [2023-12-21 13:25:19,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 40003 states and 46367 transitions. [2023-12-21 13:25:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:25:19,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:19,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:19,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 13:25:19,019 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:19,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1539332067, now seen corresponding path program 1 times [2023-12-21 13:25:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:19,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421575865] [2023-12-21 13:25:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:19,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:19,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421575865] [2023-12-21 13:25:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421575865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21875246] [2023-12-21 13:25:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:19,821 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 13:25:19,821 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 13:25:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:19,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:25:19,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:20,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:22,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21875246] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:22,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-12-21 13:25:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663919411] [2023-12-21 13:25:22,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-21 13:25:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-21 13:25:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2993, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 13:25:22,593 INFO L87 Difference]: Start difference. First operand 40003 states and 46367 transitions. Second operand has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:37,885 INFO L93 Difference]: Finished difference Result 103907 states and 120140 transitions. [2023-12-21 13:25:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-21 13:25:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-12-21 13:25:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:37,996 INFO L225 Difference]: With dead ends: 103907 [2023-12-21 13:25:37,996 INFO L226 Difference]: Without dead ends: 98509 [2023-12-21 13:25:38,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10468 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4072, Invalid=33758, Unknown=0, NotChecked=0, Total=37830 [2023-12-21 13:25:38,019 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 6059 mSDsluCounter, 37280 mSDsCounter, 0 mSdLazyCounter, 14340 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6059 SdHoareTripleChecker+Valid, 38425 SdHoareTripleChecker+Invalid, 14384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 14340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:38,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6059 Valid, 38425 Invalid, 14384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 14340 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-21 13:25:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98509 states. [2023-12-21 13:25:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98509 to 41497. [2023-12-21 13:25:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41497 states, 41496 states have (on average 1.158497204549836) internal successors, (48073), 41496 states have internal predecessors, (48073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41497 states to 41497 states and 48073 transitions. [2023-12-21 13:25:38,712 INFO L78 Accepts]: Start accepts. Automaton has 41497 states and 48073 transitions. Word has length 112 [2023-12-21 13:25:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:38,713 INFO L495 AbstractCegarLoop]: Abstraction has 41497 states and 48073 transitions. [2023-12-21 13:25:38,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.526315789473684) internal successors, (315), 57 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 41497 states and 48073 transitions. [2023-12-21 13:25:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:25:38,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:38,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:38,727 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 13:25:38,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:38,917 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:38,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash -493037086, now seen corresponding path program 1 times [2023-12-21 13:25:38,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:38,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955106328] [2023-12-21 13:25:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955106328] [2023-12-21 13:25:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955106328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998957029] [2023-12-21 13:25:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:39,577 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 13:25:39,578 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 13:25:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:39,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 13:25:39,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:41,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:42,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998957029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:42,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:42,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 59 [2023-12-21 13:25:42,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605366173] [2023-12-21 13:25:42,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:42,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 13:25:42,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 13:25:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3180, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 13:25:42,743 INFO L87 Difference]: Start difference. First operand 41497 states and 48073 transitions. Second operand has 59 states, 59 states have (on average 5.3559322033898304) internal successors, (316), 59 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:56,353 INFO L93 Difference]: Finished difference Result 77345 states and 89087 transitions. [2023-12-21 13:25:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-12-21 13:25:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.3559322033898304) internal successors, (316), 59 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:25:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:56,428 INFO L225 Difference]: With dead ends: 77345 [2023-12-21 13:25:56,428 INFO L226 Difference]: Without dead ends: 75011 [2023-12-21 13:25:56,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5003 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2854, Invalid=18608, Unknown=0, NotChecked=0, Total=21462 [2023-12-21 13:25:56,447 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 4400 mSDsluCounter, 29127 mSDsCounter, 0 mSdLazyCounter, 12324 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 30070 SdHoareTripleChecker+Invalid, 12344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 12324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:56,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4400 Valid, 30070 Invalid, 12344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 12324 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-21 13:25:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75011 states. [2023-12-21 13:25:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75011 to 41391. [2023-12-21 13:25:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41391 states, 41390 states have (on average 1.158564870741725) internal successors, (47953), 41390 states have internal predecessors, (47953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41391 states to 41391 states and 47953 transitions. [2023-12-21 13:25:56,919 INFO L78 Accepts]: Start accepts. Automaton has 41391 states and 47953 transitions. Word has length 113 [2023-12-21 13:25:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:56,919 INFO L495 AbstractCegarLoop]: Abstraction has 41391 states and 47953 transitions. [2023-12-21 13:25:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.3559322033898304) internal successors, (316), 59 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:25:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 41391 states and 47953 transitions. [2023-12-21 13:25:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:25:56,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:56,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:25:56,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 13:25:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:57,123 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -526273478, now seen corresponding path program 1 times [2023-12-21 13:25:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49155217] [2023-12-21 13:25:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:57,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:57,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49155217] [2023-12-21 13:25:57,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49155217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:57,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 13:25:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856445485] [2023-12-21 13:25:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 13:25:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 13:25:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:25:57,646 INFO L87 Difference]: Start difference. First operand 41391 states and 47953 transitions. Second operand has 21 states, 21 states have (on average 5.380952380952381) internal successors, (113), 21 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:00,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:00,106 INFO L93 Difference]: Finished difference Result 81835 states and 95048 transitions. [2023-12-21 13:26:00,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-21 13:26:00,107 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.380952380952381) internal successors, (113), 21 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:26:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:00,191 INFO L225 Difference]: With dead ends: 81835 [2023-12-21 13:26:00,191 INFO L226 Difference]: Without dead ends: 79421 [2023-12-21 13:26:00,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=2342, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 13:26:00,216 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1763 mSDsluCounter, 7569 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 8170 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:00,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 8170 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:26:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79421 states. [2023-12-21 13:26:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79421 to 38952. [2023-12-21 13:26:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38952 states, 38951 states have (on average 1.158686554902313) internal successors, (45132), 38951 states have internal predecessors, (45132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38952 states to 38952 states and 45132 transitions. [2023-12-21 13:26:00,856 INFO L78 Accepts]: Start accepts. Automaton has 38952 states and 45132 transitions. Word has length 113 [2023-12-21 13:26:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:00,857 INFO L495 AbstractCegarLoop]: Abstraction has 38952 states and 45132 transitions. [2023-12-21 13:26:00,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.380952380952381) internal successors, (113), 21 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 38952 states and 45132 transitions. [2023-12-21 13:26:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 13:26:00,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:00,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:00,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 13:26:00,863 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:00,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2021829527, now seen corresponding path program 1 times [2023-12-21 13:26:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670313245] [2023-12-21 13:26:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-21 13:26:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670313245] [2023-12-21 13:26:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670313245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:26:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992344373] [2023-12-21 13:26:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:01,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:26:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:26:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:26:01,147 INFO L87 Difference]: Start difference. First operand 38952 states and 45132 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:01,908 INFO L93 Difference]: Finished difference Result 95199 states and 110686 transitions. [2023-12-21 13:26:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:26:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 13:26:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:01,993 INFO L225 Difference]: With dead ends: 95199 [2023-12-21 13:26:01,993 INFO L226 Difference]: Without dead ends: 86800 [2023-12-21 13:26:02,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:26:02,017 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1496 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:02,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 3333 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:26:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86800 states. [2023-12-21 13:26:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86800 to 38833. [2023-12-21 13:26:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38833 states, 38832 states have (on average 1.1589410795220436) internal successors, (45004), 38832 states have internal predecessors, (45004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38833 states to 38833 states and 45004 transitions. [2023-12-21 13:26:02,663 INFO L78 Accepts]: Start accepts. Automaton has 38833 states and 45004 transitions. Word has length 136 [2023-12-21 13:26:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:02,663 INFO L495 AbstractCegarLoop]: Abstraction has 38833 states and 45004 transitions. [2023-12-21 13:26:02,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 38833 states and 45004 transitions. [2023-12-21 13:26:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:26:02,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:02,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 13:26:02,670 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:02,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 135993867, now seen corresponding path program 1 times [2023-12-21 13:26:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860366600] [2023-12-21 13:26:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:02,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 13:26:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860366600] [2023-12-21 13:26:03,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860366600] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420452469] [2023-12-21 13:26:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:03,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:03,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:03,105 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 13:26:03,137 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 13:26:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:03,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:26:03,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:03,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420452469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:05,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 37 [2023-12-21 13:26:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627975389] [2023-12-21 13:26:05,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:05,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 13:26:05,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:05,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 13:26:05,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1268, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 13:26:05,060 INFO L87 Difference]: Start difference. First operand 38833 states and 45004 transitions. Second operand has 38 states, 38 states have (on average 9.68421052631579) internal successors, (368), 37 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:54,937 INFO L93 Difference]: Finished difference Result 241623 states and 278567 transitions. [2023-12-21 13:26:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 636 states. [2023-12-21 13:26:54,937 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 9.68421052631579) internal successors, (368), 37 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 13:26:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:55,202 INFO L225 Difference]: With dead ends: 241623 [2023-12-21 13:26:55,202 INFO L226 Difference]: Without dead ends: 226342 [2023-12-21 13:26:55,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 670 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206267 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=51675, Invalid=399237, Unknown=0, NotChecked=0, Total=450912 [2023-12-21 13:26:55,248 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 13621 mSDsluCounter, 11424 mSDsCounter, 0 mSdLazyCounter, 13916 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13621 SdHoareTripleChecker+Valid, 11933 SdHoareTripleChecker+Invalid, 14070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 13916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:55,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13621 Valid, 11933 Invalid, 14070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 13916 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-21 13:26:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226342 states. [2023-12-21 13:26:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226342 to 60902. [2023-12-21 13:26:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60902 states, 60901 states have (on average 1.1631992906520419) internal successors, (70840), 60901 states have internal predecessors, (70840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60902 states to 60902 states and 70840 transitions. [2023-12-21 13:26:56,790 INFO L78 Accepts]: Start accepts. Automaton has 60902 states and 70840 transitions. Word has length 138 [2023-12-21 13:26:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:56,790 INFO L495 AbstractCegarLoop]: Abstraction has 60902 states and 70840 transitions. [2023-12-21 13:26:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 9.68421052631579) internal successors, (368), 37 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 60902 states and 70840 transitions. [2023-12-21 13:26:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 13:26:56,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:56,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:56,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-12-21 13:26:56,999 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1323731686, now seen corresponding path program 1 times [2023-12-21 13:26:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:57,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663068762] [2023-12-21 13:26:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:57,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 13:26:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663068762] [2023-12-21 13:26:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663068762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:26:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526908304] [2023-12-21 13:26:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:57,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:57,320 INFO L87 Difference]: Start difference. First operand 60902 states and 70840 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:58,898 INFO L93 Difference]: Finished difference Result 98983 states and 115488 transitions. [2023-12-21 13:26:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 13:26:58,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-21 13:26:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:58,980 INFO L225 Difference]: With dead ends: 98983 [2023-12-21 13:26:58,981 INFO L226 Difference]: Without dead ends: 83337 [2023-12-21 13:26:59,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=393, Invalid=1499, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 13:26:59,008 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2025 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:59,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 2139 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:26:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83337 states. [2023-12-21 13:26:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83337 to 60829. [2023-12-21 13:26:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60829 states, 60828 states have (on average 1.163247188794634) internal successors, (70758), 60828 states have internal predecessors, (70758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:59,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60829 states to 60829 states and 70758 transitions. [2023-12-21 13:26:59,812 INFO L78 Accepts]: Start accepts. Automaton has 60829 states and 70758 transitions. Word has length 139 [2023-12-21 13:26:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:59,812 INFO L495 AbstractCegarLoop]: Abstraction has 60829 states and 70758 transitions. [2023-12-21 13:26:59,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:26:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 60829 states and 70758 transitions. [2023-12-21 13:26:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 13:26:59,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:59,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 13:26:59,821 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1889342436, now seen corresponding path program 1 times [2023-12-21 13:26:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751905848] [2023-12-21 13:26:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 13:27:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751905848] [2023-12-21 13:27:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751905848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349136198] [2023-12-21 13:27:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:00,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:00,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:00,124 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 13:27:00,126 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 13:27:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:00,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:27:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:27:01,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:27:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349136198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:01,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 37 [2023-12-21 13:27:01,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949123109] [2023-12-21 13:27:01,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:01,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:27:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:27:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:27:01,704 INFO L87 Difference]: Start difference. First operand 60829 states and 70758 transitions. Second operand has 37 states, 37 states have (on average 8.513513513513514) internal successors, (315), 37 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:14,144 INFO L93 Difference]: Finished difference Result 147536 states and 172340 transitions. [2023-12-21 13:27:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-21 13:27:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.513513513513514) internal successors, (315), 37 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-21 13:27:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:14,302 INFO L225 Difference]: With dead ends: 147536 [2023-12-21 13:27:14,303 INFO L226 Difference]: Without dead ends: 133406 [2023-12-21 13:27:14,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9156 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4120, Invalid=24950, Unknown=0, NotChecked=0, Total=29070 [2023-12-21 13:27:14,352 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 9041 mSDsluCounter, 9687 mSDsCounter, 0 mSdLazyCounter, 7708 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9041 SdHoareTripleChecker+Valid, 9980 SdHoareTripleChecker+Invalid, 7794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 7708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:14,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9041 Valid, 9980 Invalid, 7794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 7708 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 13:27:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133406 states. [2023-12-21 13:27:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133406 to 66201. [2023-12-21 13:27:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66201 states, 66200 states have (on average 1.1636404833836858) internal successors, (77033), 66200 states have internal predecessors, (77033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66201 states to 66201 states and 77033 transitions. [2023-12-21 13:27:15,383 INFO L78 Accepts]: Start accepts. Automaton has 66201 states and 77033 transitions. Word has length 139 [2023-12-21 13:27:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:15,383 INFO L495 AbstractCegarLoop]: Abstraction has 66201 states and 77033 transitions. [2023-12-21 13:27:15,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.513513513513514) internal successors, (315), 37 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 66201 states and 77033 transitions. [2023-12-21 13:27:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 13:27:15,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:15,392 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:15,399 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 13:27:15,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-21 13:27:15,592 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:15,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1695221699, now seen corresponding path program 1 times [2023-12-21 13:27:15,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:15,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508207102] [2023-12-21 13:27:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:27:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508207102] [2023-12-21 13:27:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508207102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549111132] [2023-12-21 13:27:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:16,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:16,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:16,088 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 13:27:16,113 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 13:27:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:16,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 13:27:16,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:27:17,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 53 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:27:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549111132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:17,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 32 [2023-12-21 13:27:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77545375] [2023-12-21 13:27:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:17,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:27:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:27:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:27:17,629 INFO L87 Difference]: Start difference. First operand 66201 states and 77033 transitions. Second operand has 32 states, 32 states have (on average 9.1875) internal successors, (294), 32 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:22,707 INFO L93 Difference]: Finished difference Result 137014 states and 159886 transitions. [2023-12-21 13:27:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 13:27:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.1875) internal successors, (294), 32 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-21 13:27:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:22,848 INFO L225 Difference]: With dead ends: 137014 [2023-12-21 13:27:22,849 INFO L226 Difference]: Without dead ends: 109852 [2023-12-21 13:27:22,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1526, Invalid=6306, Unknown=0, NotChecked=0, Total=7832 [2023-12-21 13:27:22,892 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 5547 mSDsluCounter, 8653 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 9056 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:22,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5547 Valid, 9056 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:27:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109852 states. [2023-12-21 13:27:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109852 to 58749. [2023-12-21 13:27:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58749 states, 58748 states have (on average 1.1550350650234902) internal successors, (67856), 58748 states have internal predecessors, (67856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58749 states to 58749 states and 67856 transitions. [2023-12-21 13:27:23,751 INFO L78 Accepts]: Start accepts. Automaton has 58749 states and 67856 transitions. Word has length 140 [2023-12-21 13:27:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:23,751 INFO L495 AbstractCegarLoop]: Abstraction has 58749 states and 67856 transitions. [2023-12-21 13:27:23,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.1875) internal successors, (294), 32 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 58749 states and 67856 transitions. [2023-12-21 13:27:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 13:27:23,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:23,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:23,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-21 13:27:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-21 13:27:23,959 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 732786948, now seen corresponding path program 1 times [2023-12-21 13:27:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164320907] [2023-12-21 13:27:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:27:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164320907] [2023-12-21 13:27:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164320907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046094659] [2023-12-21 13:27:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:24,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:24,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:24,222 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 13:27:24,225 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 13:27:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:24,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:27:24,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:27:25,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 48 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:27:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046094659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:25,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 31 [2023-12-21 13:27:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397795053] [2023-12-21 13:27:25,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 13:27:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:25,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 13:27:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:27:25,862 INFO L87 Difference]: Start difference. First operand 58749 states and 67856 transitions. Second operand has 31 states, 31 states have (on average 9.709677419354838) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:33,227 INFO L93 Difference]: Finished difference Result 114532 states and 132052 transitions. [2023-12-21 13:27:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 13:27:33,227 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.709677419354838) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-12-21 13:27:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:33,325 INFO L225 Difference]: With dead ends: 114532 [2023-12-21 13:27:33,325 INFO L226 Difference]: Without dead ends: 86011 [2023-12-21 13:27:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2734 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2444, Invalid=8268, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 13:27:33,360 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 5145 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5145 SdHoareTripleChecker+Valid, 8848 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:33,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5145 Valid, 8848 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:27:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86011 states. [2023-12-21 13:27:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86011 to 57410. [2023-12-21 13:27:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57410 states, 57409 states have (on average 1.1465798045602607) internal successors, (65824), 57409 states have internal predecessors, (65824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57410 states to 57410 states and 65824 transitions. [2023-12-21 13:27:34,091 INFO L78 Accepts]: Start accepts. Automaton has 57410 states and 65824 transitions. Word has length 140 [2023-12-21 13:27:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:34,092 INFO L495 AbstractCegarLoop]: Abstraction has 57410 states and 65824 transitions. [2023-12-21 13:27:34,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.709677419354838) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 57410 states and 65824 transitions. [2023-12-21 13:27:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 13:27:34,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:34,100 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:34,105 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 13:27:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:34,305 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:34,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1825530884, now seen corresponding path program 1 times [2023-12-21 13:27:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729915820] [2023-12-21 13:27:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:34,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:27:34,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729915820] [2023-12-21 13:27:34,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729915820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:34,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:34,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:27:34,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766595174] [2023-12-21 13:27:34,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:34,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:27:34,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:27:34,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:27:34,348 INFO L87 Difference]: Start difference. First operand 57410 states and 65824 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:34,602 INFO L93 Difference]: Finished difference Result 87270 states and 99820 transitions. [2023-12-21 13:27:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:27:34,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-21 13:27:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:34,992 INFO L225 Difference]: With dead ends: 87270 [2023-12-21 13:27:34,992 INFO L226 Difference]: Without dead ends: 60114 [2023-12-21 13:27:35,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:27:35,002 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 173 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:35,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 451 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:27:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60114 states. [2023-12-21 13:27:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60114 to 49541. [2023-12-21 13:27:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49541 states, 49540 states have (on average 1.144368187323375) internal successors, (56692), 49540 states have internal predecessors, (56692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49541 states to 49541 states and 56692 transitions. [2023-12-21 13:27:35,564 INFO L78 Accepts]: Start accepts. Automaton has 49541 states and 56692 transitions. Word has length 143 [2023-12-21 13:27:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:35,565 INFO L495 AbstractCegarLoop]: Abstraction has 49541 states and 56692 transitions. [2023-12-21 13:27:35,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:27:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 49541 states and 56692 transitions. [2023-12-21 13:27:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 13:27:35,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:35,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:27:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 13:27:35,572 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:35,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1000942561, now seen corresponding path program 1 times [2023-12-21 13:27:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:35,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195640067] [2023-12-21 13:27:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195640067] [2023-12-21 13:27:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195640067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349386905] [2023-12-21 13:27:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:36,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:36,085 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 13:27:36,086 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 13:27:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:36,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 13:27:36,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:37,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:39,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349386905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:39,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:39,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 51 [2023-12-21 13:27:39,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946725133] [2023-12-21 13:27:39,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:39,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 13:27:39,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:39,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 13:27:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2431, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:27:39,879 INFO L87 Difference]: Start difference. First operand 49541 states and 56692 transitions. Second operand has 52 states, 52 states have (on average 7.326923076923077) internal successors, (381), 51 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:29:40,570 INFO L93 Difference]: Finished difference Result 117756 states and 133176 transitions. [2023-12-21 13:29:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 870 states. [2023-12-21 13:29:40,571 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 7.326923076923077) internal successors, (381), 51 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-21 13:29:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:29:40,677 INFO L225 Difference]: With dead ends: 117756 [2023-12-21 13:29:40,677 INFO L226 Difference]: Without dead ends: 104147 [2023-12-21 13:29:40,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392301 ImplicationChecksByTransitivity, 110.6s TimeCoverageRelationStatistics Valid=72096, Invalid=773384, Unknown=0, NotChecked=0, Total=845480 [2023-12-21 13:29:40,725 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 15046 mSDsluCounter, 12060 mSDsCounter, 0 mSdLazyCounter, 13323 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15046 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 13593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 13323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:29:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15046 Valid, 12421 Invalid, 13593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [270 Valid, 13323 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-21 13:29:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104147 states. [2023-12-21 13:29:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104147 to 50405. [2023-12-21 13:29:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50405 states, 50404 states have (on average 1.1427664471073724) internal successors, (57600), 50404 states have internal predecessors, (57600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50405 states to 50405 states and 57600 transitions. [2023-12-21 13:29:41,577 INFO L78 Accepts]: Start accepts. Automaton has 50405 states and 57600 transitions. Word has length 143 [2023-12-21 13:29:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:29:41,578 INFO L495 AbstractCegarLoop]: Abstraction has 50405 states and 57600 transitions. [2023-12-21 13:29:41,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 7.326923076923077) internal successors, (381), 51 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 50405 states and 57600 transitions. [2023-12-21 13:29:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 13:29:41,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:29:41,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:29:41,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 13:29:41,789 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,SelfDestructingSolverStorable62 [2023-12-21 13:29:41,789 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:29:41,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:29:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2060796984, now seen corresponding path program 1 times [2023-12-21 13:29:41,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:29:41,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792564937] [2023-12-21 13:29:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:29:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:29:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:29:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:29:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:29:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792564937] [2023-12-21 13:29:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792564937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:29:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:29:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:29:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321268636] [2023-12-21 13:29:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:29:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:29:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:29:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:29:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:29:41,830 INFO L87 Difference]: Start difference. First operand 50405 states and 57600 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:42,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:29:42,048 INFO L93 Difference]: Finished difference Result 69581 states and 80062 transitions. [2023-12-21 13:29:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:29:42,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-21 13:29:42,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:29:42,128 INFO L225 Difference]: With dead ends: 69581 [2023-12-21 13:29:42,129 INFO L226 Difference]: Without dead ends: 58916 [2023-12-21 13:29:42,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:29:42,155 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 192 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:29:42,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 379 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:29:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58916 states. [2023-12-21 13:29:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58916 to 50261. [2023-12-21 13:29:42,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50261 states, 50260 states have (on average 1.1403103859928372) internal successors, (57312), 50260 states have internal predecessors, (57312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50261 states to 50261 states and 57312 transitions. [2023-12-21 13:29:42,667 INFO L78 Accepts]: Start accepts. Automaton has 50261 states and 57312 transitions. Word has length 143 [2023-12-21 13:29:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:29:42,668 INFO L495 AbstractCegarLoop]: Abstraction has 50261 states and 57312 transitions. [2023-12-21 13:29:42,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:29:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 50261 states and 57312 transitions. [2023-12-21 13:29:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 13:29:42,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:29:42,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:29:42,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-21 13:29:42,675 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:29:42,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:29:42,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1155259235, now seen corresponding path program 1 times [2023-12-21 13:29:42,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:29:42,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709371035] [2023-12-21 13:29:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:29:42,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:29:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:29:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 27 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:42,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:29:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709371035] [2023-12-21 13:29:42,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709371035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:29:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640779346] [2023-12-21 13:29:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:29:42,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:29:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:29:42,958 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 13:29:42,959 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 13:29:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:29:43,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 13:29:43,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:29:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 27 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:44,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:29:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 27 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640779346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:29:46,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:29:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 52 [2023-12-21 13:29:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440633433] [2023-12-21 13:29:46,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:29:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-21 13:29:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:29:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-21 13:29:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2529, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 13:29:46,215 INFO L87 Difference]: Start difference. First operand 50261 states and 57312 transitions. Second operand has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 52 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:22,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:22,247 INFO L93 Difference]: Finished difference Result 122574 states and 138616 transitions. [2023-12-21 13:31:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 736 states. [2023-12-21 13:31:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 52 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-21 13:31:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:22,384 INFO L225 Difference]: With dead ends: 122574 [2023-12-21 13:31:22,384 INFO L226 Difference]: Without dead ends: 115941 [2023-12-21 13:31:22,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 785 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275683 ImplicationChecksByTransitivity, 84.8s TimeCoverageRelationStatistics Valid=41081, Invalid=577501, Unknown=0, NotChecked=0, Total=618582 [2023-12-21 13:31:22,439 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 14592 mSDsluCounter, 16269 mSDsCounter, 0 mSdLazyCounter, 17790 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14592 SdHoareTripleChecker+Valid, 16789 SdHoareTripleChecker+Invalid, 18017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 17790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:22,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14592 Valid, 16789 Invalid, 18017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 17790 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-21 13:31:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115941 states. [2023-12-21 13:31:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115941 to 51738. [2023-12-21 13:31:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51738 states, 51737 states have (on average 1.1402671202427663) internal successors, (58994), 51737 states have internal predecessors, (58994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51738 states to 51738 states and 58994 transitions. [2023-12-21 13:31:23,374 INFO L78 Accepts]: Start accepts. Automaton has 51738 states and 58994 transitions. Word has length 143 [2023-12-21 13:31:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:23,375 INFO L495 AbstractCegarLoop]: Abstraction has 51738 states and 58994 transitions. [2023-12-21 13:31:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.169811320754717) internal successors, (380), 52 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 51738 states and 58994 transitions. [2023-12-21 13:31:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-21 13:31:23,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:23,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:23,388 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 13:31:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:23,587 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:23,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash 469513871, now seen corresponding path program 1 times [2023-12-21 13:31:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:23,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336713803] [2023-12-21 13:31:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 13:31:23,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336713803] [2023-12-21 13:31:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336713803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:23,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:31:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700463264] [2023-12-21 13:31:23,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:23,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:31:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:31:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:23,641 INFO L87 Difference]: Start difference. First operand 51738 states and 58994 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:23,797 INFO L93 Difference]: Finished difference Result 71671 states and 81957 transitions. [2023-12-21 13:31:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:31:23,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-21 13:31:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:23,821 INFO L225 Difference]: With dead ends: 71671 [2023-12-21 13:31:23,821 INFO L226 Difference]: Without dead ends: 21398 [2023-12-21 13:31:23,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:31:23,847 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 57 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:23,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 285 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:31:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21398 states. [2023-12-21 13:31:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21398 to 21220. [2023-12-21 13:31:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21220 states, 21219 states have (on average 1.1325698666289645) internal successors, (24032), 21219 states have internal predecessors, (24032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21220 states to 21220 states and 24032 transitions. [2023-12-21 13:31:24,029 INFO L78 Accepts]: Start accepts. Automaton has 21220 states and 24032 transitions. Word has length 143 [2023-12-21 13:31:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:24,029 INFO L495 AbstractCegarLoop]: Abstraction has 21220 states and 24032 transitions. [2023-12-21 13:31:24,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 21220 states and 24032 transitions. [2023-12-21 13:31:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 13:31:24,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:24,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:24,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-21 13:31:24,033 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:24,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash 907289011, now seen corresponding path program 1 times [2023-12-21 13:31:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123230467] [2023-12-21 13:31:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 13:31:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123230467] [2023-12-21 13:31:24,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123230467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:31:24,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:31:24,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:31:24,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101384776] [2023-12-21 13:31:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:31:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:31:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:31:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:31:24,083 INFO L87 Difference]: Start difference. First operand 21220 states and 24032 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:24,223 INFO L93 Difference]: Finished difference Result 28871 states and 32874 transitions. [2023-12-21 13:31:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:31:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-21 13:31:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:24,246 INFO L225 Difference]: With dead ends: 28871 [2023-12-21 13:31:24,247 INFO L226 Difference]: Without dead ends: 21639 [2023-12-21 13:31:24,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:31:24,256 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 416 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:24,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 311 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:31:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21639 states. [2023-12-21 13:31:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21639 to 19627. [2023-12-21 13:31:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19627 states, 19626 states have (on average 1.130082543564659) internal successors, (22179), 19626 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19627 states to 19627 states and 22179 transitions. [2023-12-21 13:31:24,436 INFO L78 Accepts]: Start accepts. Automaton has 19627 states and 22179 transitions. Word has length 144 [2023-12-21 13:31:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:24,436 INFO L495 AbstractCegarLoop]: Abstraction has 19627 states and 22179 transitions. [2023-12-21 13:31:24,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 19627 states and 22179 transitions. [2023-12-21 13:31:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 13:31:24,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:24,440 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:24,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 13:31:24,440 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:24,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash -440753601, now seen corresponding path program 1 times [2023-12-21 13:31:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328768749] [2023-12-21 13:31:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:31:24,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:24,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328768749] [2023-12-21 13:31:24,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328768749] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:31:24,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523210315] [2023-12-21 13:31:24,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:24,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:24,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:31:24,899 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 13:31:24,902 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 13:31:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:25,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 13:31:25,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:31:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:31:26,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:31:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523210315] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:27,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2023-12-21 13:31:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991569491] [2023-12-21 13:31:27,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:27,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 13:31:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:27,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 13:31:27,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 13:31:27,088 INFO L87 Difference]: Start difference. First operand 19627 states and 22179 transitions. Second operand has 42 states, 42 states have (on average 7.523809523809524) internal successors, (316), 41 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:32,891 INFO L93 Difference]: Finished difference Result 38886 states and 43822 transitions. [2023-12-21 13:31:32,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-21 13:31:32,892 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.523809523809524) internal successors, (316), 41 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-21 13:31:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:32,926 INFO L225 Difference]: With dead ends: 38886 [2023-12-21 13:31:32,927 INFO L226 Difference]: Without dead ends: 33938 [2023-12-21 13:31:32,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2115 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1614, Invalid=7506, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 13:31:32,939 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 5562 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5562 SdHoareTripleChecker+Valid, 7602 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:32,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5562 Valid, 7602 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:31:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33938 states. [2023-12-21 13:31:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33938 to 19538. [2023-12-21 13:31:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19538 states, 19537 states have (on average 1.1303680196550137) internal successors, (22084), 19537 states have internal predecessors, (22084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19538 states to 19538 states and 22084 transitions. [2023-12-21 13:31:33,163 INFO L78 Accepts]: Start accepts. Automaton has 19538 states and 22084 transitions. Word has length 144 [2023-12-21 13:31:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:33,164 INFO L495 AbstractCegarLoop]: Abstraction has 19538 states and 22084 transitions. [2023-12-21 13:31:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.523809523809524) internal successors, (316), 41 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19538 states and 22084 transitions. [2023-12-21 13:31:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 13:31:33,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:33,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:33,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 13:31:33,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:33,368 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:33,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash -157647323, now seen corresponding path program 1 times [2023-12-21 13:31:33,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:33,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205636592] [2023-12-21 13:31:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:33,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:31:33,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205636592] [2023-12-21 13:31:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205636592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:31:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253527722] [2023-12-21 13:31:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:33,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:31:33,823 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 13:31:33,824 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 13:31:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:33,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-21 13:31:33,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:31:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:31:35,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:31:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253527722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:36,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:36,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2023-12-21 13:31:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234522486] [2023-12-21 13:31:36,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 13:31:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 13:31:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 13:31:36,375 INFO L87 Difference]: Start difference. First operand 19538 states and 22084 transitions. Second operand has 44 states, 44 states have (on average 6.886363636363637) internal successors, (303), 43 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:44,776 INFO L93 Difference]: Finished difference Result 32325 states and 36843 transitions. [2023-12-21 13:31:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-21 13:31:44,777 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.886363636363637) internal successors, (303), 43 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-21 13:31:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:44,810 INFO L225 Difference]: With dead ends: 32325 [2023-12-21 13:31:44,810 INFO L226 Difference]: Without dead ends: 29452 [2023-12-21 13:31:44,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2314, Invalid=9676, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 13:31:44,819 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 5539 mSDsluCounter, 13053 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 13522 SdHoareTripleChecker+Invalid, 4216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:44,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5539 Valid, 13522 Invalid, 4216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 13:31:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29452 states. [2023-12-21 13:31:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29452 to 19525. [2023-12-21 13:31:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19525 states, 19524 states have (on average 1.1303523868059824) internal successors, (22069), 19524 states have internal predecessors, (22069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19525 states to 19525 states and 22069 transitions. [2023-12-21 13:31:45,012 INFO L78 Accepts]: Start accepts. Automaton has 19525 states and 22069 transitions. Word has length 144 [2023-12-21 13:31:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:45,012 INFO L495 AbstractCegarLoop]: Abstraction has 19525 states and 22069 transitions. [2023-12-21 13:31:45,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.886363636363637) internal successors, (303), 43 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19525 states and 22069 transitions. [2023-12-21 13:31:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 13:31:45,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:45,016 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:45,024 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 13:31:45,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:45,221 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1071614013, now seen corresponding path program 1 times [2023-12-21 13:31:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465256402] [2023-12-21 13:31:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:45,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:31:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465256402] [2023-12-21 13:31:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465256402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:31:45,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957680327] [2023-12-21 13:31:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:45,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:31:45,713 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 13:31:45,715 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 13:31:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:45,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 13:31:45,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:31:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:31:47,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:31:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957680327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:48,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:48,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 16] total 46 [2023-12-21 13:31:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2951415] [2023-12-21 13:31:48,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:48,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 13:31:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:48,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 13:31:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 13:31:48,278 INFO L87 Difference]: Start difference. First operand 19525 states and 22069 transitions. Second operand has 47 states, 47 states have (on average 6.404255319148936) internal successors, (301), 46 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:31:53,197 INFO L93 Difference]: Finished difference Result 29741 states and 33724 transitions. [2023-12-21 13:31:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-21 13:31:53,197 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.404255319148936) internal successors, (301), 46 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-12-21 13:31:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:31:53,226 INFO L225 Difference]: With dead ends: 29741 [2023-12-21 13:31:53,226 INFO L226 Difference]: Without dead ends: 27130 [2023-12-21 13:31:53,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2975 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2184, Invalid=9372, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 13:31:53,235 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 4810 mSDsluCounter, 10224 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 10651 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:31:53,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 10651 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:31:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27130 states. [2023-12-21 13:31:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27130 to 19557. [2023-12-21 13:31:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19557 states, 19556 states have (on average 1.130087952546533) internal successors, (22100), 19556 states have internal predecessors, (22100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19557 states to 19557 states and 22100 transitions. [2023-12-21 13:31:53,421 INFO L78 Accepts]: Start accepts. Automaton has 19557 states and 22100 transitions. Word has length 144 [2023-12-21 13:31:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:31:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 19557 states and 22100 transitions. [2023-12-21 13:31:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.404255319148936) internal successors, (301), 46 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:31:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 19557 states and 22100 transitions. [2023-12-21 13:31:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:31:53,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:31:53,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:31:53,431 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 13:31:53,630 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,SelfDestructingSolverStorable69 [2023-12-21 13:31:53,630 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:31:53,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:31:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 454004784, now seen corresponding path program 1 times [2023-12-21 13:31:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:31:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177912949] [2023-12-21 13:31:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:31:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:54,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:31:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177912949] [2023-12-21 13:31:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177912949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:31:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761594426] [2023-12-21 13:31:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:31:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:31:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:31:54,131 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 13:31:54,134 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 13:31:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:31:54,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 13:31:54,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:31:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:55,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:31:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:31:56,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761594426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:31:56,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:31:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 18] total 53 [2023-12-21 13:31:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678238558] [2023-12-21 13:31:56,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:31:56,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 13:31:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:31:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 13:31:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2652, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 13:31:56,963 INFO L87 Difference]: Start difference. First operand 19557 states and 22100 transitions. Second operand has 54 states, 54 states have (on average 7.2407407407407405) internal successors, (391), 53 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:20,408 INFO L93 Difference]: Finished difference Result 57894 states and 66180 transitions. [2023-12-21 13:32:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-21 13:32:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.2407407407407405) internal successors, (391), 53 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-21 13:32:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:20,474 INFO L225 Difference]: With dead ends: 57894 [2023-12-21 13:32:20,474 INFO L226 Difference]: Without dead ends: 53295 [2023-12-21 13:32:20,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43627 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=12483, Invalid=98739, Unknown=0, NotChecked=0, Total=111222 [2023-12-21 13:32:20,497 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 8018 mSDsluCounter, 10541 mSDsCounter, 0 mSdLazyCounter, 8840 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8018 SdHoareTripleChecker+Valid, 10903 SdHoareTripleChecker+Invalid, 8917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 8840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:20,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8018 Valid, 10903 Invalid, 8917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 8840 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 13:32:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53295 states. [2023-12-21 13:32:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53295 to 21795. [2023-12-21 13:32:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21795 states, 21794 states have (on average 1.130035789666881) internal successors, (24628), 21794 states have internal predecessors, (24628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21795 states to 21795 states and 24628 transitions. [2023-12-21 13:32:20,863 INFO L78 Accepts]: Start accepts. Automaton has 21795 states and 24628 transitions. Word has length 147 [2023-12-21 13:32:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:20,864 INFO L495 AbstractCegarLoop]: Abstraction has 21795 states and 24628 transitions. [2023-12-21 13:32:20,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.2407407407407405) internal successors, (391), 53 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 21795 states and 24628 transitions. [2023-12-21 13:32:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:32:20,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:20,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:32:20,873 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 13:32:21,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:21,068 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:21,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -531982827, now seen corresponding path program 1 times [2023-12-21 13:32:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300720418] [2023-12-21 13:32:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:21,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:21,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:21,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300720418] [2023-12-21 13:32:21,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300720418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:32:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430547505] [2023-12-21 13:32:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:21,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:32:21,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:21,565 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 13:32:21,567 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 13:32:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:21,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 13:32:21,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:32:23,636 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:23,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:32:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430547505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:32:26,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:32:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 59 [2023-12-21 13:32:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274155818] [2023-12-21 13:32:26,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:32:26,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-21 13:32:26,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-21 13:32:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=3013, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 13:32:26,052 INFO L87 Difference]: Start difference. First operand 21795 states and 24628 transitions. Second operand has 60 states, 60 states have (on average 6.4) internal successors, (384), 59 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:06,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:06,742 INFO L93 Difference]: Finished difference Result 63144 states and 71961 transitions. [2023-12-21 13:33:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-12-21 13:33:06,743 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.4) internal successors, (384), 59 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-21 13:33:06,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:06,815 INFO L225 Difference]: With dead ends: 63144 [2023-12-21 13:33:06,815 INFO L226 Difference]: Without dead ends: 57248 [2023-12-21 13:33:06,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43848 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=18012, Invalid=97928, Unknown=0, NotChecked=0, Total=115940 [2023-12-21 13:33:06,836 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 6299 mSDsluCounter, 9787 mSDsCounter, 0 mSdLazyCounter, 9814 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6299 SdHoareTripleChecker+Valid, 10070 SdHoareTripleChecker+Invalid, 9920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 9814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:06,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6299 Valid, 10070 Invalid, 9920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 9814 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 13:33:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57248 states. [2023-12-21 13:33:07,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57248 to 24320. [2023-12-21 13:33:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24320 states, 24319 states have (on average 1.1324067601463876) internal successors, (27539), 24319 states have internal predecessors, (27539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24320 states to 24320 states and 27539 transitions. [2023-12-21 13:33:07,177 INFO L78 Accepts]: Start accepts. Automaton has 24320 states and 27539 transitions. Word has length 147 [2023-12-21 13:33:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:07,177 INFO L495 AbstractCegarLoop]: Abstraction has 24320 states and 27539 transitions. [2023-12-21 13:33:07,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.4) internal successors, (384), 59 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 24320 states and 27539 transitions. [2023-12-21 13:33:07,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:33:07,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:07,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:07,187 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 13:33:07,381 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,SelfDestructingSolverStorable71 [2023-12-21 13:33:07,382 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:07,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2068852040, now seen corresponding path program 1 times [2023-12-21 13:33:07,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682013315] [2023-12-21 13:33:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682013315] [2023-12-21 13:33:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682013315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:33:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430367085] [2023-12-21 13:33:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:07,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:33:07,896 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 13:33:07,897 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 13:33:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:08,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 13:33:08,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:33:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:08,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:33:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430367085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:33:09,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:33:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 34 [2023-12-21 13:33:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224046951] [2023-12-21 13:33:09,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:33:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 13:33:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 13:33:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 13:33:09,393 INFO L87 Difference]: Start difference. First operand 24320 states and 27539 transitions. Second operand has 34 states, 34 states have (on average 11.205882352941176) internal successors, (381), 34 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:23,675 INFO L93 Difference]: Finished difference Result 50519 states and 57694 transitions. [2023-12-21 13:33:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2023-12-21 13:33:23,676 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 11.205882352941176) internal successors, (381), 34 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-21 13:33:23,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:23,726 INFO L225 Difference]: With dead ends: 50519 [2023-12-21 13:33:23,727 INFO L226 Difference]: Without dead ends: 46326 [2023-12-21 13:33:23,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13998 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=6139, Invalid=34867, Unknown=0, NotChecked=0, Total=41006 [2023-12-21 13:33:23,746 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 6356 mSDsluCounter, 7404 mSDsCounter, 0 mSdLazyCounter, 5836 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6356 SdHoareTripleChecker+Valid, 7800 SdHoareTripleChecker+Invalid, 5877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:23,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6356 Valid, 7800 Invalid, 5877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5836 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 13:33:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46326 states. [2023-12-21 13:33:24,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46326 to 23392. [2023-12-21 13:33:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23392 states, 23391 states have (on average 1.1307767944936087) internal successors, (26450), 23391 states have internal predecessors, (26450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23392 states to 23392 states and 26450 transitions. [2023-12-21 13:33:24,057 INFO L78 Accepts]: Start accepts. Automaton has 23392 states and 26450 transitions. Word has length 147 [2023-12-21 13:33:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:24,057 INFO L495 AbstractCegarLoop]: Abstraction has 23392 states and 26450 transitions. [2023-12-21 13:33:24,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.205882352941176) internal successors, (381), 34 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23392 states and 26450 transitions. [2023-12-21 13:33:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:33:24,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:24,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:24,070 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 13:33:24,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:24,261 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:24,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1863122984, now seen corresponding path program 1 times [2023-12-21 13:33:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614056332] [2023-12-21 13:33:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:33:24,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614056332] [2023-12-21 13:33:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614056332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:33:24,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881593646] [2023-12-21 13:33:24,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:24,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:33:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:33:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:33:24,304 INFO L87 Difference]: Start difference. First operand 23392 states and 26450 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:24,445 INFO L93 Difference]: Finished difference Result 33328 states and 37784 transitions. [2023-12-21 13:33:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:33:24,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-21 13:33:24,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:24,469 INFO L225 Difference]: With dead ends: 33328 [2023-12-21 13:33:24,469 INFO L226 Difference]: Without dead ends: 22472 [2023-12-21 13:33:24,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:33:24,480 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 175 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:24,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 383 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:33:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22472 states. [2023-12-21 13:33:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22472 to 20711. [2023-12-21 13:33:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20711 states, 20710 states have (on average 1.1267020762916466) internal successors, (23334), 20710 states have internal predecessors, (23334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20711 states to 20711 states and 23334 transitions. [2023-12-21 13:33:24,662 INFO L78 Accepts]: Start accepts. Automaton has 20711 states and 23334 transitions. Word has length 147 [2023-12-21 13:33:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:24,663 INFO L495 AbstractCegarLoop]: Abstraction has 20711 states and 23334 transitions. [2023-12-21 13:33:24,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 20711 states and 23334 transitions. [2023-12-21 13:33:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:33:24,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:24,666 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:33:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-21 13:33:24,666 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:24,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash 480500413, now seen corresponding path program 1 times [2023-12-21 13:33:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465986914] [2023-12-21 13:33:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465986914] [2023-12-21 13:33:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465986914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:33:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085031933] [2023-12-21 13:33:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:33:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:33:25,309 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 13:33:25,310 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 13:33:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:25,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-21 13:33:25,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:33:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:26,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:33:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085031933] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:33:27,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:33:27,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 11] total 50 [2023-12-21 13:33:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541331792] [2023-12-21 13:33:27,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:33:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-21 13:33:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-21 13:33:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2288, Unknown=0, NotChecked=0, Total=2450 [2023-12-21 13:33:27,513 INFO L87 Difference]: Start difference. First operand 20711 states and 23334 transitions. Second operand has 50 states, 50 states have (on average 7.88) internal successors, (394), 50 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 13:34:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 335 states. [2023-12-21 13:34:10,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60254 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=15689, Invalid=130617, Unknown=0, NotChecked=0, Total=146306 [2023-12-21 13:34:10,454 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 10276 mSDsluCounter, 13918 mSDsCounter, 0 mSdLazyCounter, 13739 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10276 SdHoareTripleChecker+Valid, 14397 SdHoareTripleChecker+Invalid, 13837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 13739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:10,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10276 Valid, 14397 Invalid, 13837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 13739 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-21 13:34:10,455 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 13:34:10,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 13:34:10,485 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 13:34:10,485 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 [2023-12-21 13:34:10,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:34:10,656 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (20711states) and FLOYD_HOARE automaton (currently 335 states, 50 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 383 known predicates. [2023-12-21 13:34:10,659 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:10,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 13:34:10,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:34:10 BoogieIcfgContainer [2023-12-21 13:34:10,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 13:34:10,662 INFO L158 Benchmark]: Toolchain (without parser) took 791095.53ms. Allocated memory was 187.7MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 141.7MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-21 13:34:10,662 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 13:34:10,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.00ms. Allocated memory is still 187.7MB. Free memory was 141.3MB in the beginning and 120.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-21 13:34:10,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.99ms. Allocated memory is still 187.7MB. Free memory was 120.8MB in the beginning and 117.2MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 13:34:10,663 INFO L158 Benchmark]: Boogie Preprocessor took 67.83ms. Allocated memory is still 187.7MB. Free memory was 117.2MB in the beginning and 113.8MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 13:34:10,663 INFO L158 Benchmark]: RCFGBuilder took 706.33ms. Allocated memory was 187.7MB in the beginning and 247.5MB in the end (delta: 59.8MB). Free memory was 113.4MB in the beginning and 205.8MB in the end (delta: -92.4MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2023-12-21 13:34:10,663 INFO L158 Benchmark]: TraceAbstraction took 789954.09ms. Allocated memory was 247.5MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 205.3MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2023-12-21 13:34:10,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.00ms. Allocated memory is still 187.7MB. Free memory was 141.3MB in the beginning and 120.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.99ms. Allocated memory is still 187.7MB. Free memory was 120.8MB in the beginning and 117.2MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.83ms. Allocated memory is still 187.7MB. Free memory was 117.2MB in the beginning and 113.8MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 706.33ms. Allocated memory was 187.7MB in the beginning and 247.5MB in the end (delta: 59.8MB). Free memory was 113.4MB in the beginning and 205.8MB in the end (delta: -92.4MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. * TraceAbstraction took 789954.09ms. Allocated memory was 247.5MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 205.3MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.4GB. 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: 391]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 391). Cancelled while NwaCegarLoop was constructing difference of abstraction (20711states) and FLOYD_HOARE automaton (currently 335 states, 50 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 383 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 159 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 789.9s, OverallIterations: 75, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 665.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227854 SdHoareTripleChecker+Valid, 108.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227854 mSDsluCounter, 347956 SdHoareTripleChecker+Invalid, 94.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 323191 mSDsCounter, 2343 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200030 IncrementalHoareTripleChecker+Invalid, 202373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2343 mSolverCounterUnsat, 24765 mSDtfsCounter, 200030 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13356 GetRequests, 6079 SyntacticMatches, 17 SemanticMatches, 7259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513036 ImplicationChecksByTransitivity, 529.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140782occurred in iteration=51, InterpolantAutomatonStates: 6028, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 49.1s AutomataMinimizationTime, 74 MinimizatonAttempts, 2837208 StatesRemovedByMinimization, 73 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 64.0s InterpolantComputationTime, 10685 NumberOfCodeBlocks, 10685 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 13669 ConstructedInterpolants, 0 QuantifiedInterpolants, 166977 SizeOfPredicates, 260 NumberOfNonLiveVariables, 12777 ConjunctsInSsa, 696 ConjunctsInUnsatCore, 128 InterpolantComputations, 50 PerfectInterpolantSequences, 2757/4221 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