/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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:13:51,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:13:51,879 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 13:13:51,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:13:51,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:13:51,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:13:51,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:13:51,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:13:51,902 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:13:51,902 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:13:51,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:13:51,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:13:51,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:13:51,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:13:51,903 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:13:51,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:13:51,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:13:51,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:13:51,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:13:51,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:13:51,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:13:51,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:13:51,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:13:51,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:13:51,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:13:51,906 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:13:51,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:13:51,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:13:51,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:13:51,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:13:51,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:13:51,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:13:51,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:13:51,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:13:51,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:13:51,908 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:13:51,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:13:51,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:13:51,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:13:51,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:13:51,909 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:13:51,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:13:51,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:13:51,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:13:52,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:13:52,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:13:52,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:13:52,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:13:52,072 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:13:52,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:13:53,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:13:53,394 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:13:53,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:13:53,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17d7cb3b/d9e2639cb35c466f808dd01adc483bde/FLAG541e94fda [2023-12-21 13:13:53,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b17d7cb3b/d9e2639cb35c466f808dd01adc483bde [2023-12-21 13:13:53,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:13:53,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:13:53,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:13:53,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:13:53,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:13:53,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4824d651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53, skipping insertion in model container [2023-12-21 13:13:53,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:13:53,669 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2023-12-21 13:13:53,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:13:53,742 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:13:53,781 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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2023-12-21 13:13:53,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:13:53,833 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:13:53,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53 WrapperNode [2023-12-21 13:13:53,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:13:53,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:13:53,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:13:53,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:13:53,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,892 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2023-12-21 13:13:53,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:13:53,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:13:53,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:13:53,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:13:53,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,943 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 13:13:53,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:53,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:13:53,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:13:53,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:13:53,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:13:53,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (1/1) ... [2023-12-21 13:13:54,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:13:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:13:54,056 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 13:13:54,120 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 13:13:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:13:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:13:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:13:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:13:54,206 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:13:54,207 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:13:54,599 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:13:54,629 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:13:54,629 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:13:54,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:13:54 BoogieIcfgContainer [2023-12-21 13:13:54,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:13:54,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:13:54,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:13:54,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:13:54,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:13:53" (1/3) ... [2023-12-21 13:13:54,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e108a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:13:54, skipping insertion in model container [2023-12-21 13:13:54,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:13:53" (2/3) ... [2023-12-21 13:13:54,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e108a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:13:54, skipping insertion in model container [2023-12-21 13:13:54,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:13:54" (3/3) ... [2023-12-21 13:13:54,636 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:13:54,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:13:54,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:13:54,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:13:54,696 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;@1a721435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:13:54,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:13:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 158 states have (on average 1.7151898734177216) internal successors, (271), 159 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 13:13:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:13:54,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:54,705 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] [2023-12-21 13:13:54,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:54,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1160311881, now seen corresponding path program 1 times [2023-12-21 13:13:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:54,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837518680] [2023-12-21 13:13:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:54,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:55,157 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 13:13:55,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837518680] [2023-12-21 13:13:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837518680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:13:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195111578] [2023-12-21 13:13:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:55,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:55,200 INFO L87 Difference]: Start difference. First operand has 160 states, 158 states have (on average 1.7151898734177216) internal successors, (271), 159 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) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:13:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:55,396 INFO L93 Difference]: Finished difference Result 511 states and 830 transitions. [2023-12-21 13:13:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:13:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:55,416 INFO L225 Difference]: With dead ends: 511 [2023-12-21 13:13:55,416 INFO L226 Difference]: Without dead ends: 437 [2023-12-21 13:13:55,420 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 13:13:55,424 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 910 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1266 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 13:13:55,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1266 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:13:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-12-21 13:13:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 255. [2023-12-21 13:13:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.5) internal successors, (381), 254 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 13:13:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 381 transitions. [2023-12-21 13:13:55,465 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 381 transitions. Word has length 49 [2023-12-21 13:13:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:55,465 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 381 transitions. [2023-12-21 13:13:55,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 13:13:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 381 transitions. [2023-12-21 13:13:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:13:55,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:55,467 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 13:13:55,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:13:55,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:55,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 966264476, now seen corresponding path program 1 times [2023-12-21 13:13:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227584113] [2023-12-21 13:13:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:55,528 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 13:13:55,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:55,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227584113] [2023-12-21 13:13:55,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227584113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:55,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:55,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:13:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361223798] [2023-12-21 13:13:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:55,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:13:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:13:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:13:55,532 INFO L87 Difference]: Start difference. First operand 255 states and 381 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:55,558 INFO L93 Difference]: Finished difference Result 627 states and 953 transitions. [2023-12-21 13:13:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:13:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:55,561 INFO L225 Difference]: With dead ends: 627 [2023-12-21 13:13:55,562 INFO L226 Difference]: Without dead ends: 429 [2023-12-21 13:13:55,566 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 13:13:55,567 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 418 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 13:13:55,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 418 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-12-21 13:13:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2023-12-21 13:13:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4859154929577465) internal successors, (633), 426 states have internal predecessors, (633), 0 states have call successors, (0), 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 13:13:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 633 transitions. [2023-12-21 13:13:55,589 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 633 transitions. Word has length 52 [2023-12-21 13:13:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:55,589 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 633 transitions. [2023-12-21 13:13:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,590 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 633 transitions. [2023-12-21 13:13:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:13:55,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:55,591 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 13:13:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:13:55,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:55,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash 992810235, now seen corresponding path program 1 times [2023-12-21 13:13:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200426226] [2023-12-21 13:13:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:55,668 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 13:13:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200426226] [2023-12-21 13:13:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200426226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:13:55,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832974338] [2023-12-21 13:13:55,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:55,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:13:55,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:55,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:13:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:13:55,676 INFO L87 Difference]: Start difference. First operand 427 states and 633 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:55,703 INFO L93 Difference]: Finished difference Result 1077 states and 1614 transitions. [2023-12-21 13:13:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:13:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:55,706 INFO L225 Difference]: With dead ends: 1077 [2023-12-21 13:13:55,707 INFO L226 Difference]: Without dead ends: 749 [2023-12-21 13:13:55,708 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 13:13:55,711 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 432 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 13:13:55,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 432 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-21 13:13:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2023-12-21 13:13:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.4731903485254692) internal successors, (1099), 746 states have internal predecessors, (1099), 0 states have call successors, (0), 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 13:13:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1099 transitions. [2023-12-21 13:13:55,731 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1099 transitions. Word has length 52 [2023-12-21 13:13:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:55,735 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1099 transitions. [2023-12-21 13:13:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1099 transitions. [2023-12-21 13:13:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:13:55,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:55,738 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 13:13:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:13:55,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:55,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1415622012, now seen corresponding path program 1 times [2023-12-21 13:13:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:55,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397533380] [2023-12-21 13:13:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:55,794 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 13:13:55,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:55,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397533380] [2023-12-21 13:13:55,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397533380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:55,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:55,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:13:55,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638395770] [2023-12-21 13:13:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:55,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:13:55,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:13:55,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:13:55,797 INFO L87 Difference]: Start difference. First operand 747 states and 1099 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:55,821 INFO L93 Difference]: Finished difference Result 1858 states and 2746 transitions. [2023-12-21 13:13:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:13:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:55,826 INFO L225 Difference]: With dead ends: 1858 [2023-12-21 13:13:55,826 INFO L226 Difference]: Without dead ends: 1294 [2023-12-21 13:13:55,828 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 13:13:55,834 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 432 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 13:13:55,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 432 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-12-21 13:13:55,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1292. [2023-12-21 13:13:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 1.450813323005422) internal successors, (1873), 1291 states have internal predecessors, (1873), 0 states have call successors, (0), 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 13:13:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1873 transitions. [2023-12-21 13:13:55,897 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1873 transitions. Word has length 52 [2023-12-21 13:13:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 1292 states and 1873 transitions. [2023-12-21 13:13:55,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 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 13:13:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1873 transitions. [2023-12-21 13:13:55,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:13:55,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:55,900 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] [2023-12-21 13:13:55,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:13:55,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:55,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1773262132, now seen corresponding path program 1 times [2023-12-21 13:13:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816315158] [2023-12-21 13:13:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:56,036 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 13:13:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816315158] [2023-12-21 13:13:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816315158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:56,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:13:56,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466797967] [2023-12-21 13:13:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:56,038 INFO L87 Difference]: Start difference. First operand 1292 states and 1873 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:56,115 INFO L93 Difference]: Finished difference Result 2515 states and 3712 transitions. [2023-12-21 13:13:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:56,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:13:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:56,123 INFO L225 Difference]: With dead ends: 2515 [2023-12-21 13:13:56,124 INFO L226 Difference]: Without dead ends: 2149 [2023-12-21 13:13:56,125 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 13:13:56,126 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 633 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1126 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 13:13:56,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1126 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-12-21 13:13:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1744. [2023-12-21 13:13:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 1.4584050487664946) internal successors, (2542), 1743 states have internal predecessors, (2542), 0 states have call successors, (0), 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 13:13:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2542 transitions. [2023-12-21 13:13:56,171 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2542 transitions. Word has length 53 [2023-12-21 13:13:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:56,172 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 2542 transitions. [2023-12-21 13:13:56,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2542 transitions. [2023-12-21 13:13:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:13:56,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:56,173 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] [2023-12-21 13:13:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:13:56,174 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:56,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1554610116, now seen corresponding path program 1 times [2023-12-21 13:13:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267780041] [2023-12-21 13:13:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:56,278 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 13:13:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267780041] [2023-12-21 13:13:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267780041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:56,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:13:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438033041] [2023-12-21 13:13:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:56,280 INFO L87 Difference]: Start difference. First operand 1744 states and 2542 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:56,351 INFO L93 Difference]: Finished difference Result 2967 states and 4381 transitions. [2023-12-21 13:13:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:13:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:56,360 INFO L225 Difference]: With dead ends: 2967 [2023-12-21 13:13:56,360 INFO L226 Difference]: Without dead ends: 2601 [2023-12-21 13:13:56,361 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 13:13:56,362 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 625 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 985 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 13:13:56,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 985 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2023-12-21 13:13:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2090. [2023-12-21 13:13:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 1.463379607467688) internal successors, (3057), 2089 states have internal predecessors, (3057), 0 states have call successors, (0), 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 13:13:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3057 transitions. [2023-12-21 13:13:56,411 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3057 transitions. Word has length 53 [2023-12-21 13:13:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:56,412 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3057 transitions. [2023-12-21 13:13:56,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3057 transitions. [2023-12-21 13:13:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:13:56,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:56,414 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] [2023-12-21 13:13:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:13:56,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:56,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:56,414 INFO L85 PathProgramCache]: Analyzing trace with hash -70625906, now seen corresponding path program 1 times [2023-12-21 13:13:56,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:56,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090812906] [2023-12-21 13:13:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:56,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:56,558 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 13:13:56,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090812906] [2023-12-21 13:13:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090812906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:13:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081796124] [2023-12-21 13:13:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:56,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:56,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:56,560 INFO L87 Difference]: Start difference. First operand 2090 states and 3057 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:56,629 INFO L93 Difference]: Finished difference Result 3366 states and 4971 transitions. [2023-12-21 13:13:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:56,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 13:13:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:56,637 INFO L225 Difference]: With dead ends: 3366 [2023-12-21 13:13:56,637 INFO L226 Difference]: Without dead ends: 3000 [2023-12-21 13:13:56,639 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 13:13:56,640 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 627 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:56,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1126 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:13:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2023-12-21 13:13:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2381. [2023-12-21 13:13:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 1.4668067226890755) internal successors, (3491), 2380 states have internal predecessors, (3491), 0 states have call successors, (0), 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 13:13:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3491 transitions. [2023-12-21 13:13:56,681 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3491 transitions. Word has length 53 [2023-12-21 13:13:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:56,681 INFO L495 AbstractCegarLoop]: Abstraction has 2381 states and 3491 transitions. [2023-12-21 13:13:56,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 13:13:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3491 transitions. [2023-12-21 13:13:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:13:56,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:56,684 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 13:13:56,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:13:56,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:56,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 901626181, now seen corresponding path program 1 times [2023-12-21 13:13:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816005965] [2023-12-21 13:13:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:56,784 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 13:13:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816005965] [2023-12-21 13:13:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816005965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:56,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:56,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:13:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503655514] [2023-12-21 13:13:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:56,786 INFO L87 Difference]: Start difference. First operand 2381 states and 3491 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 13:13:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:56,975 INFO L93 Difference]: Finished difference Result 5654 states and 8291 transitions. [2023-12-21 13:13:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:56,976 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 13:13:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:56,984 INFO L225 Difference]: With dead ends: 5654 [2023-12-21 13:13:56,984 INFO L226 Difference]: Without dead ends: 3318 [2023-12-21 13:13:56,988 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 13:13:56,989 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 895 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:56,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 224 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:13:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2023-12-21 13:13:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 3300. [2023-12-21 13:13:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3299 states have (on average 1.4552894816611095) internal successors, (4801), 3299 states have internal predecessors, (4801), 0 states have call successors, (0), 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 13:13:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4801 transitions. [2023-12-21 13:13:57,050 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4801 transitions. Word has length 57 [2023-12-21 13:13:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:57,050 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4801 transitions. [2023-12-21 13:13:57,050 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 13:13:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4801 transitions. [2023-12-21 13:13:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:13:57,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:57,051 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 13:13:57,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:13:57,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:57,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash -541876395, now seen corresponding path program 1 times [2023-12-21 13:13:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:57,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111772268] [2023-12-21 13:13:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:57,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:57,139 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 13:13:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:57,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111772268] [2023-12-21 13:13:57,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111772268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:57,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:57,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:13:57,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153787750] [2023-12-21 13:13:57,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:57,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:57,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:57,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:57,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:57,141 INFO L87 Difference]: Start difference. First operand 3300 states and 4801 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 13:13:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:57,329 INFO L93 Difference]: Finished difference Result 7792 states and 11330 transitions. [2023-12-21 13:13:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:57,330 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 13:13:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:57,341 INFO L225 Difference]: With dead ends: 7792 [2023-12-21 13:13:57,342 INFO L226 Difference]: Without dead ends: 4573 [2023-12-21 13:13:57,346 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 13:13:57,348 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 852 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:57,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 226 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:13:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2023-12-21 13:13:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 4548. [2023-12-21 13:13:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4547 states have (on average 1.4407301517484055) internal successors, (6551), 4547 states have internal predecessors, (6551), 0 states have call successors, (0), 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 13:13:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6551 transitions. [2023-12-21 13:13:57,428 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6551 transitions. Word has length 57 [2023-12-21 13:13:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:57,428 INFO L495 AbstractCegarLoop]: Abstraction has 4548 states and 6551 transitions. [2023-12-21 13:13:57,429 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 13:13:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6551 transitions. [2023-12-21 13:13:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:13:57,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:57,431 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 13:13:57,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:13:57,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:57,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 55402618, now seen corresponding path program 1 times [2023-12-21 13:13:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708214409] [2023-12-21 13:13:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:57,501 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 13:13:57,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708214409] [2023-12-21 13:13:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708214409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:13:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920133893] [2023-12-21 13:13:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:57,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:13:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:13:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:13:57,502 INFO L87 Difference]: Start difference. First operand 4548 states and 6551 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 13:13:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:57,684 INFO L93 Difference]: Finished difference Result 13097 states and 18889 transitions. [2023-12-21 13:13:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:13:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 13:13:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:57,722 INFO L225 Difference]: With dead ends: 13097 [2023-12-21 13:13:57,722 INFO L226 Difference]: Without dead ends: 8576 [2023-12-21 13:13:57,731 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 13:13:57,732 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 919 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:57,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 213 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:13:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2023-12-21 13:13:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 8525. [2023-12-21 13:13:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8525 states, 8524 states have (on average 1.429493195682778) internal successors, (12185), 8524 states have internal predecessors, (12185), 0 states have call successors, (0), 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 13:13:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8525 states to 8525 states and 12185 transitions. [2023-12-21 13:13:57,913 INFO L78 Accepts]: Start accepts. Automaton has 8525 states and 12185 transitions. Word has length 58 [2023-12-21 13:13:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:57,914 INFO L495 AbstractCegarLoop]: Abstraction has 8525 states and 12185 transitions. [2023-12-21 13:13:57,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 13:13:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8525 states and 12185 transitions. [2023-12-21 13:13:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:13:57,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:57,920 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] [2023-12-21 13:13:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:13:57,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -444759938, now seen corresponding path program 1 times [2023-12-21 13:13:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059518029] [2023-12-21 13:13:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:58,073 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 13:13:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059518029] [2023-12-21 13:13:58,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059518029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:58,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:58,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:13:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123645771] [2023-12-21 13:13:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:13:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:13:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:13:58,075 INFO L87 Difference]: Start difference. First operand 8525 states and 12185 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:13:58,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:58,524 INFO L93 Difference]: Finished difference Result 33188 states and 47107 transitions. [2023-12-21 13:13:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:13:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 13:13:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:58,579 INFO L225 Difference]: With dead ends: 33188 [2023-12-21 13:13:58,580 INFO L226 Difference]: Without dead ends: 28810 [2023-12-21 13:13:58,598 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 13:13:58,599 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 2094 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:58,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 341 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:13:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28810 states. [2023-12-21 13:13:58,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28810 to 8545. [2023-12-21 13:13:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 1.4289559925093633) internal successors, (12209), 8544 states have internal predecessors, (12209), 0 states have call successors, (0), 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 13:13:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 12209 transitions. [2023-12-21 13:13:58,900 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 12209 transitions. Word has length 59 [2023-12-21 13:13:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:13:58,901 INFO L495 AbstractCegarLoop]: Abstraction has 8545 states and 12209 transitions. [2023-12-21 13:13:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:13:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 12209 transitions. [2023-12-21 13:13:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:13:58,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:13:58,905 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] [2023-12-21 13:13:58,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:13:58,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:13:58,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:13:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -520399649, now seen corresponding path program 1 times [2023-12-21 13:13:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:13:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810041953] [2023-12-21 13:13:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:13:58,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:13:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:13:58,991 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 13:13:58,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:13:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810041953] [2023-12-21 13:13:58,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810041953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:13:58,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:13:58,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:13:58,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608243837] [2023-12-21 13:13:58,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:13:58,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:13:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:13:58,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:13:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:13:58,993 INFO L87 Difference]: Start difference. First operand 8545 states and 12209 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:13:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:13:59,395 INFO L93 Difference]: Finished difference Result 39222 states and 55831 transitions. [2023-12-21 13:13:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:13:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 13:13:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:13:59,457 INFO L225 Difference]: With dead ends: 39222 [2023-12-21 13:13:59,457 INFO L226 Difference]: Without dead ends: 34968 [2023-12-21 13:13:59,474 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 13:13:59,475 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2386 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:13:59,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 386 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:13:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34968 states. [2023-12-21 13:14:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34968 to 8655. [2023-12-21 13:14:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8655 states, 8654 states have (on average 1.4272012941992143) internal successors, (12351), 8654 states have internal predecessors, (12351), 0 states have call successors, (0), 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 13:14:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 12351 transitions. [2023-12-21 13:14:00,063 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 12351 transitions. Word has length 59 [2023-12-21 13:14:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:00,063 INFO L495 AbstractCegarLoop]: Abstraction has 8655 states and 12351 transitions. [2023-12-21 13:14:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:14:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 12351 transitions. [2023-12-21 13:14:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:14:00,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:00,067 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] [2023-12-21 13:14:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:14:00,068 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:00,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1892561408, now seen corresponding path program 1 times [2023-12-21 13:14:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460459370] [2023-12-21 13:14:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:00,175 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 13:14:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460459370] [2023-12-21 13:14:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460459370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:00,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:14:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747732943] [2023-12-21 13:14:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:00,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:14:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:14:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:14:00,177 INFO L87 Difference]: Start difference. First operand 8655 states and 12351 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:14:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:00,680 INFO L93 Difference]: Finished difference Result 45959 states and 65251 transitions. [2023-12-21 13:14:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:14:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 13:14:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:00,739 INFO L225 Difference]: With dead ends: 45959 [2023-12-21 13:14:00,739 INFO L226 Difference]: Without dead ends: 42861 [2023-12-21 13:14:00,750 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 13:14:00,751 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2758 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:00,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 408 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:14:00,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42861 states. [2023-12-21 13:14:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42861 to 8711. [2023-12-21 13:14:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 8710 states have (on average 1.425947187141217) internal successors, (12420), 8710 states have internal predecessors, (12420), 0 states have call successors, (0), 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 13:14:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 12420 transitions. [2023-12-21 13:14:01,051 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 12420 transitions. Word has length 59 [2023-12-21 13:14:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:01,051 INFO L495 AbstractCegarLoop]: Abstraction has 8711 states and 12420 transitions. [2023-12-21 13:14:01,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 13:14:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 12420 transitions. [2023-12-21 13:14:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:14:01,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:01,059 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 13:14:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:14:01,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:01,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2088840466, now seen corresponding path program 1 times [2023-12-21 13:14:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:01,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95718021] [2023-12-21 13:14:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:01,297 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 13:14:01,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:01,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95718021] [2023-12-21 13:14:01,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95718021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:01,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:01,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:14:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216651656] [2023-12-21 13:14:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:14:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:01,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:14:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:14:01,299 INFO L87 Difference]: Start difference. First operand 8711 states and 12420 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:02,119 INFO L93 Difference]: Finished difference Result 29531 states and 42066 transitions. [2023-12-21 13:14:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:14:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:02,148 INFO L225 Difference]: With dead ends: 29531 [2023-12-21 13:14:02,148 INFO L226 Difference]: Without dead ends: 22360 [2023-12-21 13:14:02,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:14:02,162 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1968 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:02,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 1178 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:14:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22360 states. [2023-12-21 13:14:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22360 to 8545. [2023-12-21 13:14:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 1.4240402621722847) internal successors, (12167), 8544 states have internal predecessors, (12167), 0 states have call successors, (0), 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 13:14:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 12167 transitions. [2023-12-21 13:14:02,384 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 12167 transitions. Word has length 61 [2023-12-21 13:14:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 8545 states and 12167 transitions. [2023-12-21 13:14:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 12167 transitions. [2023-12-21 13:14:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:14:02,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:02,388 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 13:14:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:14:02,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:02,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1783315053, now seen corresponding path program 1 times [2023-12-21 13:14:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122357678] [2023-12-21 13:14:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:02,645 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 13:14:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122357678] [2023-12-21 13:14:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122357678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:02,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:02,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:14:02,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045936998] [2023-12-21 13:14:02,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:02,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:14:02,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:14:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:14:02,647 INFO L87 Difference]: Start difference. First operand 8545 states and 12167 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:03,613 INFO L93 Difference]: Finished difference Result 25917 states and 36684 transitions. [2023-12-21 13:14:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:14:03,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:03,636 INFO L225 Difference]: With dead ends: 25917 [2023-12-21 13:14:03,636 INFO L226 Difference]: Without dead ends: 18607 [2023-12-21 13:14:03,648 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 13:14:03,648 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1895 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1187 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:14:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18607 states. [2023-12-21 13:14:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18607 to 8252. [2023-12-21 13:14:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8252 states, 8251 states have (on average 1.4229790328445038) internal successors, (11741), 8251 states have internal predecessors, (11741), 0 states have call successors, (0), 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 13:14:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8252 states to 8252 states and 11741 transitions. [2023-12-21 13:14:03,837 INFO L78 Accepts]: Start accepts. Automaton has 8252 states and 11741 transitions. Word has length 61 [2023-12-21 13:14:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:03,837 INFO L495 AbstractCegarLoop]: Abstraction has 8252 states and 11741 transitions. [2023-12-21 13:14:03,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8252 states and 11741 transitions. [2023-12-21 13:14:03,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:14:03,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:03,840 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 13:14:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:14:03,840 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:03,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1232591148, now seen corresponding path program 1 times [2023-12-21 13:14:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420885031] [2023-12-21 13:14:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:04,073 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 13:14:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420885031] [2023-12-21 13:14:04,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420885031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:04,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:14:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520088961] [2023-12-21 13:14:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:04,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:14:04,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:14:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:14:04,075 INFO L87 Difference]: Start difference. First operand 8252 states and 11741 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:04,985 INFO L93 Difference]: Finished difference Result 30254 states and 43009 transitions. [2023-12-21 13:14:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:14:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:05,013 INFO L225 Difference]: With dead ends: 30254 [2023-12-21 13:14:05,013 INFO L226 Difference]: Without dead ends: 23151 [2023-12-21 13:14:05,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:14:05,027 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1332 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:05,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1649 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:14:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23151 states. [2023-12-21 13:14:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23151 to 8111. [2023-12-21 13:14:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 8110 states have (on average 1.4236744759556104) internal successors, (11546), 8110 states have internal predecessors, (11546), 0 states have call successors, (0), 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 13:14:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 11546 transitions. [2023-12-21 13:14:05,212 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 11546 transitions. Word has length 61 [2023-12-21 13:14:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:05,212 INFO L495 AbstractCegarLoop]: Abstraction has 8111 states and 11546 transitions. [2023-12-21 13:14:05,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 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 13:14:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 11546 transitions. [2023-12-21 13:14:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:14:05,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:05,215 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 13:14:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:14:05,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:05,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 574436983, now seen corresponding path program 1 times [2023-12-21 13:14:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:05,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132530264] [2023-12-21 13:14:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:05,250 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 13:14:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132530264] [2023-12-21 13:14:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132530264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:05,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:05,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:05,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110496518] [2023-12-21 13:14:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:05,252 INFO L87 Difference]: Start difference. First operand 8111 states and 11546 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 13:14:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:05,289 INFO L93 Difference]: Finished difference Result 11168 states and 15855 transitions. [2023-12-21 13:14:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:05,289 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 13:14:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:05,298 INFO L225 Difference]: With dead ends: 11168 [2023-12-21 13:14:05,299 INFO L226 Difference]: Without dead ends: 7914 [2023-12-21 13:14:05,304 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 13:14:05,305 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 150 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 521 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 13:14:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 521 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2023-12-21 13:14:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7912. [2023-12-21 13:14:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 7911 states have (on average 1.3971684995575782) internal successors, (11053), 7911 states have internal predecessors, (11053), 0 states have call successors, (0), 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 13:14:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11053 transitions. [2023-12-21 13:14:05,405 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11053 transitions. Word has length 62 [2023-12-21 13:14:05,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:05,405 INFO L495 AbstractCegarLoop]: Abstraction has 7912 states and 11053 transitions. [2023-12-21 13:14:05,405 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 13:14:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11053 transitions. [2023-12-21 13:14:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:14:05,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:05,408 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 13:14:05,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:14:05,408 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:05,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1506383405, now seen corresponding path program 1 times [2023-12-21 13:14:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299572972] [2023-12-21 13:14:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:05,443 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 13:14:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299572972] [2023-12-21 13:14:05,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299572972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289020998] [2023-12-21 13:14:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:05,445 INFO L87 Difference]: Start difference. First operand 7912 states and 11053 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 13:14:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:05,477 INFO L93 Difference]: Finished difference Result 11328 states and 15820 transitions. [2023-12-21 13:14:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:05,477 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 13:14:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:05,485 INFO L225 Difference]: With dead ends: 11328 [2023-12-21 13:14:05,485 INFO L226 Difference]: Without dead ends: 7040 [2023-12-21 13:14:05,490 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 13:14:05,491 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 136 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 516 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 13:14:05,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 516 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2023-12-21 13:14:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 7038. [2023-12-21 13:14:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7038 states, 7037 states have (on average 1.3751598692624698) internal successors, (9677), 7037 states have internal predecessors, (9677), 0 states have call successors, (0), 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 13:14:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7038 states to 7038 states and 9677 transitions. [2023-12-21 13:14:05,580 INFO L78 Accepts]: Start accepts. Automaton has 7038 states and 9677 transitions. Word has length 62 [2023-12-21 13:14:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:05,580 INFO L495 AbstractCegarLoop]: Abstraction has 7038 states and 9677 transitions. [2023-12-21 13:14:05,580 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 13:14:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 7038 states and 9677 transitions. [2023-12-21 13:14:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:14:05,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:05,583 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 13:14:05,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:14:05,583 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:05,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1863112174, now seen corresponding path program 1 times [2023-12-21 13:14:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5709210] [2023-12-21 13:14:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:05,615 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 13:14:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5709210] [2023-12-21 13:14:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5709210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522481909] [2023-12-21 13:14:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:05,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:05,617 INFO L87 Difference]: Start difference. First operand 7038 states and 9677 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 13:14:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:05,645 INFO L93 Difference]: Finished difference Result 9422 states and 12951 transitions. [2023-12-21 13:14:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:05,646 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 13:14:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:05,651 INFO L225 Difference]: With dead ends: 9422 [2023-12-21 13:14:05,652 INFO L226 Difference]: Without dead ends: 5435 [2023-12-21 13:14:05,656 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 13:14:05,657 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 148 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 527 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 13:14:05,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 527 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5435 states. [2023-12-21 13:14:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5435 to 5433. [2023-12-21 13:14:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 1.3519882179675995) internal successors, (7344), 5432 states have internal predecessors, (7344), 0 states have call successors, (0), 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 13:14:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 7344 transitions. [2023-12-21 13:14:05,712 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 7344 transitions. Word has length 62 [2023-12-21 13:14:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:05,712 INFO L495 AbstractCegarLoop]: Abstraction has 5433 states and 7344 transitions. [2023-12-21 13:14:05,712 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 13:14:05,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 7344 transitions. [2023-12-21 13:14:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:14:05,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:05,715 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] [2023-12-21 13:14:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:14:05,715 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:05,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1653707668, now seen corresponding path program 1 times [2023-12-21 13:14:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:05,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029930148] [2023-12-21 13:14:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:05,744 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 13:14:05,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:05,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029930148] [2023-12-21 13:14:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029930148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:05,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717424414] [2023-12-21 13:14:05,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:05,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:05,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:05,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:05,746 INFO L87 Difference]: Start difference. First operand 5433 states and 7344 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:05,789 INFO L93 Difference]: Finished difference Result 10137 states and 13773 transitions. [2023-12-21 13:14:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:05,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:14:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:05,797 INFO L225 Difference]: With dead ends: 10137 [2023-12-21 13:14:05,797 INFO L226 Difference]: Without dead ends: 7400 [2023-12-21 13:14:05,801 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 13:14:05,802 INFO L413 NwaCegarLoop]: 213 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, 345 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 13:14:05,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 345 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2023-12-21 13:14:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 5216. [2023-12-21 13:14:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 1.35071907957814) internal successors, (7044), 5215 states have internal predecessors, (7044), 0 states have call successors, (0), 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 13:14:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 7044 transitions. [2023-12-21 13:14:05,865 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 7044 transitions. Word has length 63 [2023-12-21 13:14:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:05,865 INFO L495 AbstractCegarLoop]: Abstraction has 5216 states and 7044 transitions. [2023-12-21 13:14:05,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 7044 transitions. [2023-12-21 13:14:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:14:05,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:05,868 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] [2023-12-21 13:14:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:14:05,868 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:05,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1460142013, now seen corresponding path program 1 times [2023-12-21 13:14:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031834084] [2023-12-21 13:14:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:05,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:07,057 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 13:14:07,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:07,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031834084] [2023-12-21 13:14:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031834084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:07,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:07,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-21 13:14:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177852425] [2023-12-21 13:14:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:07,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 13:14:07,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 13:14:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:14:07,059 INFO L87 Difference]: Start difference. First operand 5216 states and 7044 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:10,170 INFO L93 Difference]: Finished difference Result 10054 states and 13664 transitions. [2023-12-21 13:14:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 13:14:10,170 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:14:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:10,181 INFO L225 Difference]: With dead ends: 10054 [2023-12-21 13:14:10,181 INFO L226 Difference]: Without dead ends: 9938 [2023-12-21 13:14:10,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=374, Invalid=1788, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 13:14:10,186 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2182 mSDsluCounter, 7204 mSDsCounter, 0 mSdLazyCounter, 4221 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 7721 SdHoareTripleChecker+Invalid, 4224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:10,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 7721 Invalid, 4224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4221 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:14:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9938 states. [2023-12-21 13:14:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9938 to 5216. [2023-12-21 13:14:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 1.3505273250239693) internal successors, (7043), 5215 states have internal predecessors, (7043), 0 states have call successors, (0), 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 13:14:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 7043 transitions. [2023-12-21 13:14:10,250 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 7043 transitions. Word has length 63 [2023-12-21 13:14:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:10,250 INFO L495 AbstractCegarLoop]: Abstraction has 5216 states and 7043 transitions. [2023-12-21 13:14:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 7043 transitions. [2023-12-21 13:14:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:14:10,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:10,256 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] [2023-12-21 13:14:10,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:14:10,256 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:10,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash -371341941, now seen corresponding path program 1 times [2023-12-21 13:14:10,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:10,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200971584] [2023-12-21 13:14:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:10,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:10,699 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 13:14:10,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:10,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200971584] [2023-12-21 13:14:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200971584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:14:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331384607] [2023-12-21 13:14:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:14:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:14:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:14:10,701 INFO L87 Difference]: Start difference. First operand 5216 states and 7043 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:11,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:11,871 INFO L93 Difference]: Finished difference Result 9892 states and 13433 transitions. [2023-12-21 13:14:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 13:14:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:14:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:11,880 INFO L225 Difference]: With dead ends: 9892 [2023-12-21 13:14:11,880 INFO L226 Difference]: Without dead ends: 9216 [2023-12-21 13:14:11,895 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 13:14:11,896 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2060 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:11,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 3164 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:14:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2023-12-21 13:14:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 5098. [2023-12-21 13:14:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5097 states have (on average 1.3509907788895428) internal successors, (6886), 5097 states have internal predecessors, (6886), 0 states have call successors, (0), 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 13:14:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 6886 transitions. [2023-12-21 13:14:11,982 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 6886 transitions. Word has length 63 [2023-12-21 13:14:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:11,982 INFO L495 AbstractCegarLoop]: Abstraction has 5098 states and 6886 transitions. [2023-12-21 13:14:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 6886 transitions. [2023-12-21 13:14:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:14:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:11,984 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] [2023-12-21 13:14:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:14:11,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:11,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1637588281, now seen corresponding path program 1 times [2023-12-21 13:14:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625728607] [2023-12-21 13:14:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:12,394 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 13:14:12,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625728607] [2023-12-21 13:14:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625728607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:12,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:14:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973166408] [2023-12-21 13:14:12,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:14:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:14:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:14:12,396 INFO L87 Difference]: Start difference. First operand 5098 states and 6886 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:13,940 INFO L93 Difference]: Finished difference Result 16632 states and 22713 transitions. [2023-12-21 13:14:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 13:14:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:14:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:13,959 INFO L225 Difference]: With dead ends: 16632 [2023-12-21 13:14:13,959 INFO L226 Difference]: Without dead ends: 16166 [2023-12-21 13:14:13,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 13:14:13,989 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 2896 mSDsluCounter, 5452 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:13,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2896 Valid, 6088 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:14:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16166 states. [2023-12-21 13:14:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16166 to 5004. [2023-12-21 13:14:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 5003 states have (on average 1.3509894063561863) internal successors, (6759), 5003 states have internal predecessors, (6759), 0 states have call successors, (0), 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 13:14:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 6759 transitions. [2023-12-21 13:14:14,098 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 6759 transitions. Word has length 63 [2023-12-21 13:14:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:14,098 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 6759 transitions. [2023-12-21 13:14:14,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 6759 transitions. [2023-12-21 13:14:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:14:14,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:14,100 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] [2023-12-21 13:14:14,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:14:14,100 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:14,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:14,101 INFO L85 PathProgramCache]: Analyzing trace with hash 895185990, now seen corresponding path program 1 times [2023-12-21 13:14:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:14,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424917031] [2023-12-21 13:14:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:14,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:14,122 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 13:14:14,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424917031] [2023-12-21 13:14:14,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424917031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:14,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:14,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:14,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960716369] [2023-12-21 13:14:14,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:14,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:14,124 INFO L87 Difference]: Start difference. First operand 5004 states and 6759 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:14,159 INFO L93 Difference]: Finished difference Result 9432 states and 12813 transitions. [2023-12-21 13:14:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:14,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:14:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:14,166 INFO L225 Difference]: With dead ends: 9432 [2023-12-21 13:14:14,166 INFO L226 Difference]: Without dead ends: 6812 [2023-12-21 13:14:14,169 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 13:14:14,170 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 173 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 357 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 13:14:14,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 357 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states. [2023-12-21 13:14:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6812 to 4732. [2023-12-21 13:14:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 1.3506658211794547) internal successors, (6390), 4731 states have internal predecessors, (6390), 0 states have call successors, (0), 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 13:14:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 6390 transitions. [2023-12-21 13:14:14,274 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 6390 transitions. Word has length 63 [2023-12-21 13:14:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:14,274 INFO L495 AbstractCegarLoop]: Abstraction has 4732 states and 6390 transitions. [2023-12-21 13:14:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 13:14:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 6390 transitions. [2023-12-21 13:14:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 13:14:14,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:14,277 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] [2023-12-21 13:14:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:14:14,277 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:14,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1607583403, now seen corresponding path program 1 times [2023-12-21 13:14:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100150043] [2023-12-21 13:14:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:14,345 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 13:14:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100150043] [2023-12-21 13:14:14,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100150043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:14,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:14:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716967404] [2023-12-21 13:14:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:14,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:14:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:14:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:14:14,346 INFO L87 Difference]: Start difference. First operand 4732 states and 6390 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:14:14,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:14,401 INFO L93 Difference]: Finished difference Result 4738 states and 6393 transitions. [2023-12-21 13:14:14,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:14:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-12-21 13:14:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:14,405 INFO L225 Difference]: With dead ends: 4738 [2023-12-21 13:14:14,405 INFO L226 Difference]: Without dead ends: 4263 [2023-12-21 13:14:14,406 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 13:14:14,406 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 555 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:14,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 668 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:14,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2023-12-21 13:14:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 4259. [2023-12-21 13:14:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 4258 states have (on average 1.3539220291216534) internal successors, (5765), 4258 states have internal predecessors, (5765), 0 states have call successors, (0), 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 13:14:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 5765 transitions. [2023-12-21 13:14:14,444 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 5765 transitions. Word has length 68 [2023-12-21 13:14:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:14,444 INFO L495 AbstractCegarLoop]: Abstraction has 4259 states and 5765 transitions. [2023-12-21 13:14:14,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:14:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 5765 transitions. [2023-12-21 13:14:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 13:14:14,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:14,446 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] [2023-12-21 13:14:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:14:14,447 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:14,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash -701031860, now seen corresponding path program 1 times [2023-12-21 13:14:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:14,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632642992] [2023-12-21 13:14:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:14,515 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 13:14:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:14,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632642992] [2023-12-21 13:14:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632642992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:14,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29809875] [2023-12-21 13:14:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:14,517 INFO L87 Difference]: Start difference. First operand 4259 states and 5765 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 13:14:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:14,546 INFO L93 Difference]: Finished difference Result 11009 states and 15029 transitions. [2023-12-21 13:14:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:14,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-21 13:14:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:14,553 INFO L225 Difference]: With dead ends: 11009 [2023-12-21 13:14:14,553 INFO L226 Difference]: Without dead ends: 7351 [2023-12-21 13:14:14,557 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 13:14:14,557 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 116 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 437 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 13:14:14,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 437 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2023-12-21 13:14:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 6833. [2023-12-21 13:14:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 6832 states have (on average 1.3473360655737705) internal successors, (9205), 6832 states have internal predecessors, (9205), 0 states have call successors, (0), 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 13:14:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9205 transitions. [2023-12-21 13:14:14,624 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9205 transitions. Word has length 71 [2023-12-21 13:14:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 6833 states and 9205 transitions. [2023-12-21 13:14:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 13:14:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9205 transitions. [2023-12-21 13:14:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 13:14:14,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:14,626 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 13:14:14,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:14:14,626 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:14,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1394163845, now seen corresponding path program 1 times [2023-12-21 13:14:14,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:14,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430199214] [2023-12-21 13:14:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:14,675 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 13:14:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430199214] [2023-12-21 13:14:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430199214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:14,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:14,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747786288] [2023-12-21 13:14:14,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:14,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:14,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:14,677 INFO L87 Difference]: Start difference. First operand 6833 states and 9205 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 13:14:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:14,718 INFO L93 Difference]: Finished difference Result 18637 states and 25249 transitions. [2023-12-21 13:14:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:14,718 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 13:14:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:14,732 INFO L225 Difference]: With dead ends: 18637 [2023-12-21 13:14:14,733 INFO L226 Difference]: Without dead ends: 12425 [2023-12-21 13:14:14,739 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 13:14:14,740 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 105 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 430 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 13:14:14,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 430 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12425 states. [2023-12-21 13:14:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12425 to 11519. [2023-12-21 13:14:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 11518 states have (on average 1.3438096891821496) internal successors, (15478), 11518 states have internal predecessors, (15478), 0 states have call successors, (0), 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 13:14:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 15478 transitions. [2023-12-21 13:14:14,856 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 15478 transitions. Word has length 72 [2023-12-21 13:14:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:14,856 INFO L495 AbstractCegarLoop]: Abstraction has 11519 states and 15478 transitions. [2023-12-21 13:14:14,856 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 13:14:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 15478 transitions. [2023-12-21 13:14:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:14:14,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:14,857 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 13:14:14,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:14:14,858 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:14,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1262986629, now seen corresponding path program 1 times [2023-12-21 13:14:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644944151] [2023-12-21 13:14:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:14,908 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 13:14:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:14,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644944151] [2023-12-21 13:14:14,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644944151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:14,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:14,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476977426] [2023-12-21 13:14:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:14,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:14,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:14,910 INFO L87 Difference]: Start difference. First operand 11519 states and 15478 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 13:14:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:14,980 INFO L93 Difference]: Finished difference Result 32075 states and 43116 transitions. [2023-12-21 13:14:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 13:14:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:15,004 INFO L225 Difference]: With dead ends: 32075 [2023-12-21 13:14:15,004 INFO L226 Difference]: Without dead ends: 21177 [2023-12-21 13:14:15,016 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 13:14:15,017 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 95 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 420 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 13:14:15,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 420 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21177 states. [2023-12-21 13:14:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21177 to 19367. [2023-12-21 13:14:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19367 states, 19366 states have (on average 1.3322317463595994) internal successors, (25800), 19366 states have internal predecessors, (25800), 0 states have call successors, (0), 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 13:14:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19367 states to 19367 states and 25800 transitions. [2023-12-21 13:14:15,211 INFO L78 Accepts]: Start accepts. Automaton has 19367 states and 25800 transitions. Word has length 73 [2023-12-21 13:14:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:15,211 INFO L495 AbstractCegarLoop]: Abstraction has 19367 states and 25800 transitions. [2023-12-21 13:14:15,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 13:14:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 19367 states and 25800 transitions. [2023-12-21 13:14:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:14:15,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:15,213 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, 1, 1] [2023-12-21 13:14:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:14:15,213 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:15,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -127158118, now seen corresponding path program 1 times [2023-12-21 13:14:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138912786] [2023-12-21 13:14:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:15,310 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 13:14:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:15,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138912786] [2023-12-21 13:14:15,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138912786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:15,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:15,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:14:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418106084] [2023-12-21 13:14:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:15,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:14:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:14:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:14:15,312 INFO L87 Difference]: Start difference. First operand 19367 states and 25800 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:14:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:15,420 INFO L93 Difference]: Finished difference Result 41413 states and 54326 transitions. [2023-12-21 13:14:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:14:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-21 13:14:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:15,475 INFO L225 Difference]: With dead ends: 41413 [2023-12-21 13:14:15,475 INFO L226 Difference]: Without dead ends: 41411 [2023-12-21 13:14:15,490 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 13:14:15,490 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 334 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:15,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1007 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41411 states. [2023-12-21 13:14:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41411 to 21335. [2023-12-21 13:14:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21335 states, 21334 states have (on average 1.3015843254898285) internal successors, (27768), 21334 states have internal predecessors, (27768), 0 states have call successors, (0), 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 13:14:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21335 states to 21335 states and 27768 transitions. [2023-12-21 13:14:15,817 INFO L78 Accepts]: Start accepts. Automaton has 21335 states and 27768 transitions. Word has length 76 [2023-12-21 13:14:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:15,817 INFO L495 AbstractCegarLoop]: Abstraction has 21335 states and 27768 transitions. [2023-12-21 13:14:15,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:14:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 21335 states and 27768 transitions. [2023-12-21 13:14:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:14:15,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:15,819 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, 1, 1, 1] [2023-12-21 13:14:15,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:14:15,819 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:15,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:15,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1368110880, now seen corresponding path program 1 times [2023-12-21 13:14:15,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:15,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704504544] [2023-12-21 13:14:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:15,849 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 13:14:15,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704504544] [2023-12-21 13:14:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704504544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:14:15,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:14:15,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:14:15,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749525143] [2023-12-21 13:14:15,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:14:15,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:14:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:14:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:14:15,851 INFO L87 Difference]: Start difference. First operand 21335 states and 27768 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:14:16,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:16,032 INFO L93 Difference]: Finished difference Result 52539 states and 68058 transitions. [2023-12-21 13:14:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:14:16,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 13:14:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:16,071 INFO L225 Difference]: With dead ends: 52539 [2023-12-21 13:14:16,072 INFO L226 Difference]: Without dead ends: 31825 [2023-12-21 13:14:16,088 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 13:14:16,089 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 135 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:16,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:14:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31825 states. [2023-12-21 13:14:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31825 to 31823. [2023-12-21 13:14:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31823 states, 31822 states have (on average 1.2779837848029665) internal successors, (40668), 31822 states have internal predecessors, (40668), 0 states have call successors, (0), 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 13:14:16,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31823 states to 31823 states and 40668 transitions. [2023-12-21 13:14:16,409 INFO L78 Accepts]: Start accepts. Automaton has 31823 states and 40668 transitions. Word has length 77 [2023-12-21 13:14:16,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:16,409 INFO L495 AbstractCegarLoop]: Abstraction has 31823 states and 40668 transitions. [2023-12-21 13:14:16,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:14:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31823 states and 40668 transitions. [2023-12-21 13:14:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:14:16,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:16,415 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, 1, 1] [2023-12-21 13:14:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:14:16,415 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:16,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 989291744, now seen corresponding path program 1 times [2023-12-21 13:14:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221219186] [2023-12-21 13:14:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:16,587 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 13:14:16,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221219186] [2023-12-21 13:14:16,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221219186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:14:16,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199036257] [2023-12-21 13:14:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:16,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:14:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:14:16,590 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 13:14:16,592 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 13:14:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:16,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:14:16,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:14:17,809 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 13:14:17,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:14:18,671 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 13:14:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199036257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:14:18,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:14:18,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 32 [2023-12-21 13:14:18,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908427483] [2023-12-21 13:14:18,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:14:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:14:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:18,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:14:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:14:18,674 INFO L87 Difference]: Start difference. First operand 31823 states and 40668 transitions. Second operand has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 states have internal predecessors, (257), 0 states have call successors, (0), 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 13:14:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:14:43,849 INFO L93 Difference]: Finished difference Result 391969 states and 488681 transitions. [2023-12-21 13:14:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 326 states. [2023-12-21 13:14:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 states have internal predecessors, (257), 0 states have call successors, (0), 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 96 [2023-12-21 13:14:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:14:44,587 INFO L225 Difference]: With dead ends: 391969 [2023-12-21 13:14:44,588 INFO L226 Difference]: Without dead ends: 375359 [2023-12-21 13:14:44,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54731 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=17617, Invalid=109475, Unknown=0, NotChecked=0, Total=127092 [2023-12-21 13:14:44,705 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 9748 mSDsluCounter, 11784 mSDsCounter, 0 mSdLazyCounter, 10960 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9748 SdHoareTripleChecker+Valid, 12194 SdHoareTripleChecker+Invalid, 11067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 10960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:14:44,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9748 Valid, 12194 Invalid, 11067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 10960 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-21 13:14:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375359 states. [2023-12-21 13:14:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375359 to 32253. [2023-12-21 13:14:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32253 states, 32252 states have (on average 1.2774091529207492) internal successors, (41199), 32252 states have internal predecessors, (41199), 0 states have call successors, (0), 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 13:14:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32253 states to 32253 states and 41199 transitions. [2023-12-21 13:14:46,997 INFO L78 Accepts]: Start accepts. Automaton has 32253 states and 41199 transitions. Word has length 96 [2023-12-21 13:14:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:14:46,998 INFO L495 AbstractCegarLoop]: Abstraction has 32253 states and 41199 transitions. [2023-12-21 13:14:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.787878787878788) internal successors, (257), 32 states have internal predecessors, (257), 0 states have call successors, (0), 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 13:14:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 32253 states and 41199 transitions. [2023-12-21 13:14:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:14:47,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:14:47,005 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, 1, 1] [2023-12-21 13:14:47,014 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 13:14:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:14:47,211 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:14:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:14:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1510327294, now seen corresponding path program 1 times [2023-12-21 13:14:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:14:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446451815] [2023-12-21 13:14:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:14:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:47,442 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 13:14:47,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:14:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446451815] [2023-12-21 13:14:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446451815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:14:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818086492] [2023-12-21 13:14:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:14:47,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:14:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:14:47,444 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 13:14:47,447 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 13:14:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:14:47,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:14:47,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:14:48,197 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 13:14:48,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:14:48,998 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 13:14:48,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818086492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:14:48,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:14:48,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 29 [2023-12-21 13:14:48,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385902424] [2023-12-21 13:14:48,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:14:48,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:14:48,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:14:48,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:14:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:14:49,000 INFO L87 Difference]: Start difference. First operand 32253 states and 41199 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 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 13:15:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:17,901 INFO L93 Difference]: Finished difference Result 418892 states and 530312 transitions. [2023-12-21 13:15:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2023-12-21 13:15:17,901 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 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 96 [2023-12-21 13:15:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:18,588 INFO L225 Difference]: With dead ends: 418892 [2023-12-21 13:15:18,588 INFO L226 Difference]: Without dead ends: 387690 [2023-12-21 13:15:18,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97101 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=22638, Invalid=187584, Unknown=0, NotChecked=0, Total=210222 [2023-12-21 13:15:18,673 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 12459 mSDsluCounter, 9165 mSDsCounter, 0 mSdLazyCounter, 10857 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12459 SdHoareTripleChecker+Valid, 9566 SdHoareTripleChecker+Invalid, 11020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 10857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:18,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12459 Valid, 9566 Invalid, 11020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 10857 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-21 13:15:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387690 states. [2023-12-21 13:15:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387690 to 62806. [2023-12-21 13:15:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62806 states, 62805 states have (on average 1.2756946103017275) internal successors, (80120), 62805 states have internal predecessors, (80120), 0 states have call successors, (0), 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 13:15:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62806 states to 62806 states and 80120 transitions. [2023-12-21 13:15:20,963 INFO L78 Accepts]: Start accepts. Automaton has 62806 states and 80120 transitions. Word has length 96 [2023-12-21 13:15:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:20,963 INFO L495 AbstractCegarLoop]: Abstraction has 62806 states and 80120 transitions. [2023-12-21 13:15:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 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 13:15:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 62806 states and 80120 transitions. [2023-12-21 13:15:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:15:21,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:21,002 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 13:15:21,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 13:15:21,210 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,SelfDestructingSolverStorable31 [2023-12-21 13:15:21,210 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:21,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash -862902664, now seen corresponding path program 1 times [2023-12-21 13:15:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732612856] [2023-12-21 13:15:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:15:21,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732612856] [2023-12-21 13:15:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732612856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:21,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:21,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:21,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885780126] [2023-12-21 13:15:21,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:21,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:21,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:21,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:21,276 INFO L87 Difference]: Start difference. First operand 62806 states and 80120 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:15:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:22,047 INFO L93 Difference]: Finished difference Result 127390 states and 162727 transitions. [2023-12-21 13:15:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:22,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:15:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:22,155 INFO L225 Difference]: With dead ends: 127390 [2023-12-21 13:15:22,156 INFO L226 Difference]: Without dead ends: 65667 [2023-12-21 13:15:22,201 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 13:15:22,202 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 163 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:22,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 200 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65667 states. [2023-12-21 13:15:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65667 to 62161. [2023-12-21 13:15:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62161 states, 62160 states have (on average 1.2588642213642214) internal successors, (78251), 62160 states have internal predecessors, (78251), 0 states have call successors, (0), 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 13:15:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62161 states to 62161 states and 78251 transitions. [2023-12-21 13:15:23,049 INFO L78 Accepts]: Start accepts. Automaton has 62161 states and 78251 transitions. Word has length 105 [2023-12-21 13:15:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:23,049 INFO L495 AbstractCegarLoop]: Abstraction has 62161 states and 78251 transitions. [2023-12-21 13:15:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 13:15:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 62161 states and 78251 transitions. [2023-12-21 13:15:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:15:23,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:23,060 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 13:15:23,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:15:23,060 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:23,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1312949932, now seen corresponding path program 1 times [2023-12-21 13:15:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:23,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653829533] [2023-12-21 13:15:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:23,113 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 13:15:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653829533] [2023-12-21 13:15:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653829533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:15:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401741133] [2023-12-21 13:15:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:23,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:15:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:15:23,138 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 13:15:23,139 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 13:15:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:23,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:15:23,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:15:23,559 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 13:15:23,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:15:23,665 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 13:15:23,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401741133] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:15:23,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:15:23,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:15:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012592378] [2023-12-21 13:15:23,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:15:23,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:15:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:23,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:15:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:15:23,667 INFO L87 Difference]: Start difference. First operand 62161 states and 78251 transitions. Second operand has 14 states, 14 states have (on average 20.714285714285715) internal successors, (290), 14 states have internal predecessors, (290), 0 states have call successors, (0), 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 13:15:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,326 INFO L93 Difference]: Finished difference Result 144368 states and 181642 transitions. [2023-12-21 13:15:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:15:24,326 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.714285714285715) internal successors, (290), 14 states have internal predecessors, (290), 0 states have call successors, (0), 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 13:15:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,423 INFO L225 Difference]: With dead ends: 144368 [2023-12-21 13:15:24,424 INFO L226 Difference]: Without dead ends: 83080 [2023-12-21 13:15:24,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 203 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 13:15:24,453 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 2674 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:24,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 737 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:15:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83080 states. [2023-12-21 13:15:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83080 to 61246. [2023-12-21 13:15:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61246 states, 61245 states have (on average 1.2407870030206547) internal successors, (75992), 61245 states have internal predecessors, (75992), 0 states have call successors, (0), 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 13:15:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61246 states to 61246 states and 75992 transitions. [2023-12-21 13:15:25,407 INFO L78 Accepts]: Start accepts. Automaton has 61246 states and 75992 transitions. Word has length 105 [2023-12-21 13:15:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 61246 states and 75992 transitions. [2023-12-21 13:15:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.714285714285715) internal successors, (290), 14 states have internal predecessors, (290), 0 states have call successors, (0), 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 13:15:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 61246 states and 75992 transitions. [2023-12-21 13:15:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:15:25,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:25,417 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 13:15:25,425 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 13:15:25,622 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 13:15:25,623 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:25,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash -454234201, now seen corresponding path program 1 times [2023-12-21 13:15:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633095274] [2023-12-21 13:15:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:25,677 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 13:15:25,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:25,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633095274] [2023-12-21 13:15:25,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633095274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:25,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:25,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318575774] [2023-12-21 13:15:25,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:25,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:25,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:25,678 INFO L87 Difference]: Start difference. First operand 61246 states and 75992 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 13:15:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:26,284 INFO L93 Difference]: Finished difference Result 133192 states and 165032 transitions. [2023-12-21 13:15:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:15:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 13:15:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:26,370 INFO L225 Difference]: With dead ends: 133192 [2023-12-21 13:15:26,370 INFO L226 Difference]: Without dead ends: 72800 [2023-12-21 13:15:26,404 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 13:15:26,404 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 598 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:26,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 366 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72800 states. [2023-12-21 13:15:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72800 to 58568. [2023-12-21 13:15:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58568 states, 58567 states have (on average 1.2176652381033688) internal successors, (71315), 58567 states have internal predecessors, (71315), 0 states have call successors, (0), 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 13:15:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58568 states to 58568 states and 71315 transitions. [2023-12-21 13:15:27,149 INFO L78 Accepts]: Start accepts. Automaton has 58568 states and 71315 transitions. Word has length 106 [2023-12-21 13:15:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:27,149 INFO L495 AbstractCegarLoop]: Abstraction has 58568 states and 71315 transitions. [2023-12-21 13:15:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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 13:15:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 58568 states and 71315 transitions. [2023-12-21 13:15:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:15:27,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:27,158 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 13:15:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:15:27,158 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:27,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1216592532, now seen corresponding path program 1 times [2023-12-21 13:15:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592143686] [2023-12-21 13:15:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:27,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:27,222 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 13:15:27,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:27,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592143686] [2023-12-21 13:15:27,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592143686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:15:27,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972507527] [2023-12-21 13:15:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:27,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:15:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:15:27,223 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 13:15:27,250 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 13:15:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:27,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:15:27,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:15:27,706 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 13:15:27,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:15:27,916 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 13:15:27,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972507527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:15:27,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:15:27,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:15:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377937975] [2023-12-21 13:15:27,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:15:27,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:15:27,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:15:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:15:27,918 INFO L87 Difference]: Start difference. First operand 58568 states and 71315 transitions. Second operand has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 14 states have internal predecessors, (283), 0 states have call successors, (0), 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 13:15:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:28,604 INFO L93 Difference]: Finished difference Result 151178 states and 182722 transitions. [2023-12-21 13:15:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:15:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 14 states have internal predecessors, (283), 0 states have call successors, (0), 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 13:15:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:28,744 INFO L225 Difference]: With dead ends: 151178 [2023-12-21 13:15:28,744 INFO L226 Difference]: Without dead ends: 106682 [2023-12-21 13:15:28,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:15:28,952 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 2577 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:28,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 818 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:15:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106682 states. [2023-12-21 13:15:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106682 to 67024. [2023-12-21 13:15:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67024 states, 67023 states have (on average 1.2135684764931443) internal successors, (81337), 67023 states have internal predecessors, (81337), 0 states have call successors, (0), 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 13:15:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67024 states to 67024 states and 81337 transitions. [2023-12-21 13:15:29,909 INFO L78 Accepts]: Start accepts. Automaton has 67024 states and 81337 transitions. Word has length 106 [2023-12-21 13:15:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:29,909 INFO L495 AbstractCegarLoop]: Abstraction has 67024 states and 81337 transitions. [2023-12-21 13:15:29,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.214285714285715) internal successors, (283), 14 states have internal predecessors, (283), 0 states have call successors, (0), 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 13:15:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 67024 states and 81337 transitions. [2023-12-21 13:15:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:15:29,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:29,919 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 13:15:29,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 13:15:30,123 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 13:15:30,124 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:30,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:30,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1766562791, now seen corresponding path program 1 times [2023-12-21 13:15:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:30,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041910841] [2023-12-21 13:15:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:30,163 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 13:15:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041910841] [2023-12-21 13:15:30,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041910841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:30,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:30,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:15:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022467138] [2023-12-21 13:15:30,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:30,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:15:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:15:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:15:30,165 INFO L87 Difference]: Start difference. First operand 67024 states and 81337 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 13:15:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:30,790 INFO L93 Difference]: Finished difference Result 162026 states and 195970 transitions. [2023-12-21 13:15:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 108 [2023-12-21 13:15:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:30,956 INFO L225 Difference]: With dead ends: 162026 [2023-12-21 13:15:30,956 INFO L226 Difference]: Without dead ends: 137744 [2023-12-21 13:15:30,993 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 13:15:30,993 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 372 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:30,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 486 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:31,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137744 states. [2023-12-21 13:15:32,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137744 to 78975. [2023-12-21 13:15:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78975 states, 78974 states have (on average 1.2144629878187758) internal successors, (95911), 78974 states have internal predecessors, (95911), 0 states have call successors, (0), 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 13:15:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78975 states to 78975 states and 95911 transitions. [2023-12-21 13:15:32,374 INFO L78 Accepts]: Start accepts. Automaton has 78975 states and 95911 transitions. Word has length 108 [2023-12-21 13:15:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:32,375 INFO L495 AbstractCegarLoop]: Abstraction has 78975 states and 95911 transitions. [2023-12-21 13:15:32,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 13:15:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 78975 states and 95911 transitions. [2023-12-21 13:15:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:15:32,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:32,393 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 13:15:32,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:15:32,394 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:32,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash 577060606, now seen corresponding path program 1 times [2023-12-21 13:15:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:32,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568895550] [2023-12-21 13:15:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:32,599 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 13:15:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568895550] [2023-12-21 13:15:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568895550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:32,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:32,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:15:32,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222681952] [2023-12-21 13:15:32,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:32,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:15:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:15:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:15:32,601 INFO L87 Difference]: Start difference. First operand 78975 states and 95911 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 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 13:15:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:33,950 INFO L93 Difference]: Finished difference Result 176785 states and 213971 transitions. [2023-12-21 13:15:33,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:15:33,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 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 13:15:33,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:34,141 INFO L225 Difference]: With dead ends: 176785 [2023-12-21 13:15:34,141 INFO L226 Difference]: Without dead ends: 148634 [2023-12-21 13:15:34,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:15:34,195 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1014 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:34,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1383 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:15:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148634 states. [2023-12-21 13:15:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148634 to 114487. [2023-12-21 13:15:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114487 states, 114486 states have (on average 1.214777352689412) internal successors, (139075), 114486 states have internal predecessors, (139075), 0 states have call successors, (0), 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 13:15:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114487 states to 114487 states and 139075 transitions. [2023-12-21 13:15:35,750 INFO L78 Accepts]: Start accepts. Automaton has 114487 states and 139075 transitions. Word has length 108 [2023-12-21 13:15:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:35,750 INFO L495 AbstractCegarLoop]: Abstraction has 114487 states and 139075 transitions. [2023-12-21 13:15:35,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 8 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 13:15:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 114487 states and 139075 transitions. [2023-12-21 13:15:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:15:35,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:35,777 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] [2023-12-21 13:15:35,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:15:35,777 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:35,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:35,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2100043593, now seen corresponding path program 1 times [2023-12-21 13:15:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549267656] [2023-12-21 13:15:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:35,821 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 13:15:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549267656] [2023-12-21 13:15:35,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549267656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:35,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:15:35,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289075883] [2023-12-21 13:15:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:15:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:35,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:15:35,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:15:35,822 INFO L87 Difference]: Start difference. First operand 114487 states and 139075 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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 13:15:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:37,207 INFO L93 Difference]: Finished difference Result 287653 states and 347656 transitions. [2023-12-21 13:15:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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 109 [2023-12-21 13:15:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:37,577 INFO L225 Difference]: With dead ends: 287653 [2023-12-21 13:15:37,577 INFO L226 Difference]: Without dead ends: 246380 [2023-12-21 13:15:37,616 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 13:15:37,617 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 370 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:37,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 516 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:15:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246380 states. [2023-12-21 13:15:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246380 to 132061. [2023-12-21 13:15:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132061 states, 132060 states have (on average 1.214584279872785) internal successors, (160398), 132060 states have internal predecessors, (160398), 0 states have call successors, (0), 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 13:15:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132061 states to 132061 states and 160398 transitions. [2023-12-21 13:15:39,915 INFO L78 Accepts]: Start accepts. Automaton has 132061 states and 160398 transitions. Word has length 109 [2023-12-21 13:15:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:39,916 INFO L495 AbstractCegarLoop]: Abstraction has 132061 states and 160398 transitions. [2023-12-21 13:15:39,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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 13:15:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 132061 states and 160398 transitions. [2023-12-21 13:15:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:15:39,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:39,929 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] [2023-12-21 13:15:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:15:39,930 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:39,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1463481678, now seen corresponding path program 1 times [2023-12-21 13:15:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:39,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59600131] [2023-12-21 13:15:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:39,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:40,419 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 13:15:40,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:40,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59600131] [2023-12-21 13:15:40,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59600131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:15:40,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529772456] [2023-12-21 13:15:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:40,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:15:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:15:40,428 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 13:15:40,472 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 13:15:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:40,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:15:40,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:15:41,385 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 13:15:41,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:15:41,990 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 13:15:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529772456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:15:41,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:15:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-12-21 13:15:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576055738] [2023-12-21 13:15:41,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:15:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 13:15:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 13:15:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:15:41,993 INFO L87 Difference]: Start difference. First operand 132061 states and 160398 transitions. Second operand has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 35 states have internal predecessors, (302), 0 states have call successors, (0), 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 13:17:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:17,103 INFO L93 Difference]: Finished difference Result 1167976 states and 1384295 transitions. [2023-12-21 13:17:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 979 states. [2023-12-21 13:17:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 35 states have internal predecessors, (302), 0 states have call successors, (0), 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 109 [2023-12-21 13:17:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:19,420 INFO L225 Difference]: With dead ends: 1167976 [2023-12-21 13:17:19,420 INFO L226 Difference]: Without dead ends: 1131394 [2023-12-21 13:17:19,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1010 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492755 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=82834, Invalid=940298, Unknown=0, NotChecked=0, Total=1023132 [2023-12-21 13:17:19,652 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 37923 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 13339 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37923 SdHoareTripleChecker+Valid, 12872 SdHoareTripleChecker+Invalid, 13905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 13339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:19,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37923 Valid, 12872 Invalid, 13905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [566 Valid, 13339 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-21 13:17:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131394 states. [2023-12-21 13:17:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131394 to 157799. [2023-12-21 13:17:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157799 states, 157798 states have (on average 1.2135008048264238) internal successors, (191488), 157798 states have internal predecessors, (191488), 0 states have call successors, (0), 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 13:17:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157799 states to 157799 states and 191488 transitions. [2023-12-21 13:17:26,647 INFO L78 Accepts]: Start accepts. Automaton has 157799 states and 191488 transitions. Word has length 109 [2023-12-21 13:17:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:26,647 INFO L495 AbstractCegarLoop]: Abstraction has 157799 states and 191488 transitions. [2023-12-21 13:17:26,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.628571428571428) internal successors, (302), 35 states have internal predecessors, (302), 0 states have call successors, (0), 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 13:17:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 157799 states and 191488 transitions. [2023-12-21 13:17:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:17:26,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:26,661 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] [2023-12-21 13:17:26,667 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 13:17:26,867 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,SelfDestructingSolverStorable39 [2023-12-21 13:17:26,867 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:26,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash -44877183, now seen corresponding path program 1 times [2023-12-21 13:17:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334949037] [2023-12-21 13:17:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:27,480 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 13:17:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334949037] [2023-12-21 13:17:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334949037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:17:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356822753] [2023-12-21 13:17:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:27,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:17:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:17:27,482 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 13:17:27,527 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 13:17:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:27,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:17:27,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:17:28,043 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 13:17:28,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:17:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356822753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:17:28,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:17:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 22 [2023-12-21 13:17:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217577383] [2023-12-21 13:17:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:17:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:17:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:17:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:17:28,044 INFO L87 Difference]: Start difference. First operand 157799 states and 191488 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:17:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:29,109 INFO L93 Difference]: Finished difference Result 210331 states and 254948 transitions. [2023-12-21 13:17:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:17:29,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 13:17:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:29,284 INFO L225 Difference]: With dead ends: 210331 [2023-12-21 13:17:29,284 INFO L226 Difference]: Without dead ends: 169866 [2023-12-21 13:17:29,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:17:29,331 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 927 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 3307 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:17:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169866 states. [2023-12-21 13:17:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169866 to 165011. [2023-12-21 13:17:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165011 states, 165010 states have (on average 1.21250227258954) internal successors, (200075), 165010 states have internal predecessors, (200075), 0 states have call successors, (0), 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 13:17:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165011 states to 165011 states and 200075 transitions. [2023-12-21 13:17:31,427 INFO L78 Accepts]: Start accepts. Automaton has 165011 states and 200075 transitions. Word has length 109 [2023-12-21 13:17:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:31,427 INFO L495 AbstractCegarLoop]: Abstraction has 165011 states and 200075 transitions. [2023-12-21 13:17:31,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:17:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 165011 states and 200075 transitions. [2023-12-21 13:17:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:17:31,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:31,442 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] [2023-12-21 13:17:31,450 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 13:17:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:17:31,649 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:31,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:31,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1960892074, now seen corresponding path program 1 times [2023-12-21 13:17:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:31,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78209096] [2023-12-21 13:17:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:17:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:31,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78209096] [2023-12-21 13:17:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78209096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:17:31,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:17:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:17:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22687393] [2023-12-21 13:17:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:17:31,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:17:31,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:17:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:17:31,684 INFO L87 Difference]: Start difference. First operand 165011 states and 200075 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 13:17:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:32,982 INFO L93 Difference]: Finished difference Result 481107 states and 585204 transitions. [2023-12-21 13:17:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:17:32,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 109 [2023-12-21 13:17:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:33,901 INFO L225 Difference]: With dead ends: 481107 [2023-12-21 13:17:33,901 INFO L226 Difference]: Without dead ends: 337461 [2023-12-21 13:17:34,001 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 13:17:34,005 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 377 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 496 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:17:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337461 states. [2023-12-21 13:17:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337461 to 150889. [2023-12-21 13:17:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150889 states, 150888 states have (on average 1.213953395896294) internal successors, (183171), 150888 states have internal predecessors, (183171), 0 states have call successors, (0), 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 13:17:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150889 states to 150889 states and 183171 transitions. [2023-12-21 13:17:36,561 INFO L78 Accepts]: Start accepts. Automaton has 150889 states and 183171 transitions. Word has length 109 [2023-12-21 13:17:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:36,562 INFO L495 AbstractCegarLoop]: Abstraction has 150889 states and 183171 transitions. [2023-12-21 13:17:36,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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 13:17:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 150889 states and 183171 transitions. [2023-12-21 13:17:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:17:36,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:36,574 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] [2023-12-21 13:17:36,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 13:17:36,575 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:36,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:36,575 INFO L85 PathProgramCache]: Analyzing trace with hash 731605499, now seen corresponding path program 1 times [2023-12-21 13:17:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:36,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394095891] [2023-12-21 13:17:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:36,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:37,207 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 13:17:37,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:37,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394095891] [2023-12-21 13:17:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394095891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:17:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:17:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:17:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261281391] [2023-12-21 13:17:37,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:17:37,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:17:37,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:17:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:17:37,210 INFO L87 Difference]: Start difference. First operand 150889 states and 183171 transitions. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:17:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:44,369 INFO L93 Difference]: Finished difference Result 319584 states and 383477 transitions. [2023-12-21 13:17:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-21 13:17:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 13:17:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:44,768 INFO L225 Difference]: With dead ends: 319584 [2023-12-21 13:17:44,768 INFO L226 Difference]: Without dead ends: 305466 [2023-12-21 13:17:44,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7345 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3076, Invalid=15556, Unknown=0, NotChecked=0, Total=18632 [2023-12-21 13:17:44,832 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 4182 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4182 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:44,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4182 Valid, 2778 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 13:17:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305466 states. [2023-12-21 13:17:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305466 to 150715. [2023-12-21 13:17:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150715 states, 150714 states have (on average 1.214094244728426) internal successors, (182981), 150714 states have internal predecessors, (182981), 0 states have call successors, (0), 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 13:17:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150715 states to 150715 states and 182981 transitions. [2023-12-21 13:17:47,269 INFO L78 Accepts]: Start accepts. Automaton has 150715 states and 182981 transitions. Word has length 109 [2023-12-21 13:17:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:47,269 INFO L495 AbstractCegarLoop]: Abstraction has 150715 states and 182981 transitions. [2023-12-21 13:17:47,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 14 states have internal predecessors, (109), 0 states have call successors, (0), 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 13:17:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 150715 states and 182981 transitions. [2023-12-21 13:17:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:17:47,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:47,279 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 13:17:47,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 13:17:47,279 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:47,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash -183074596, now seen corresponding path program 1 times [2023-12-21 13:17:47,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590040685] [2023-12-21 13:17:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:47,421 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 13:17:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590040685] [2023-12-21 13:17:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590040685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:17:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394913723] [2023-12-21 13:17:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:47,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:17:47,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:17:47,422 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 13:17:47,424 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 13:17:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:47,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:17:47,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:17:48,469 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 13:17:48,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:17:49,051 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 13:17:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394913723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:17:49,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:17:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2023-12-21 13:17:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445730988] [2023-12-21 13:17:49,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:17:49,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 13:17:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:49,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 13:17:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:17:49,052 INFO L87 Difference]: Start difference. First operand 150715 states and 182981 transitions. Second operand has 24 states, 24 states have (on average 11.75) internal successors, (282), 24 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:17:52,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:52,890 INFO L93 Difference]: Finished difference Result 411822 states and 493984 transitions. [2023-12-21 13:17:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 13:17:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.75) internal successors, (282), 24 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:17:52,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:53,356 INFO L225 Difference]: With dead ends: 411822 [2023-12-21 13:17:53,356 INFO L226 Difference]: Without dead ends: 350933 [2023-12-21 13:17:53,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=979, Invalid=3577, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 13:17:53,439 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 2087 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:53,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 3754 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:17:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350933 states. [2023-12-21 13:17:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350933 to 169580. [2023-12-21 13:17:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169580 states, 169579 states have (on average 1.2135818703966883) internal successors, (205798), 169579 states have internal predecessors, (205798), 0 states have call successors, (0), 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 13:17:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169580 states to 169580 states and 205798 transitions. [2023-12-21 13:17:56,790 INFO L78 Accepts]: Start accepts. Automaton has 169580 states and 205798 transitions. Word has length 110 [2023-12-21 13:17:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:56,790 INFO L495 AbstractCegarLoop]: Abstraction has 169580 states and 205798 transitions. [2023-12-21 13:17:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.75) internal successors, (282), 24 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:17:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 169580 states and 205798 transitions. [2023-12-21 13:17:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:17:56,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:56,800 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 13:17:56,806 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 13:17:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:17:57,005 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:57,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1355548204, now seen corresponding path program 1 times [2023-12-21 13:17:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102257305] [2023-12-21 13:17:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:57,591 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 13:17:57,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:57,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102257305] [2023-12-21 13:17:57,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102257305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:17:57,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:17:57,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 13:17:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574646965] [2023-12-21 13:17:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:17:57,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 13:17:57,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:57,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 13:17:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-21 13:17:57,592 INFO L87 Difference]: Start difference. First operand 169580 states and 205798 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:17:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:59,147 INFO L93 Difference]: Finished difference Result 241689 states and 293524 transitions. [2023-12-21 13:17:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 13:17:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:17:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:59,445 INFO L225 Difference]: With dead ends: 241689 [2023-12-21 13:17:59,445 INFO L226 Difference]: Without dead ends: 223262 [2023-12-21 13:17:59,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=367, Invalid=965, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:17:59,477 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1699 mSDsluCounter, 4066 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:59,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 4576 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:17:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223262 states. [2023-12-21 13:18:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223262 to 180108. [2023-12-21 13:18:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180108 states, 180107 states have (on average 1.2140671933905955) internal successors, (218662), 180107 states have internal predecessors, (218662), 0 states have call successors, (0), 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 13:18:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180108 states to 180108 states and 218662 transitions. [2023-12-21 13:18:01,803 INFO L78 Accepts]: Start accepts. Automaton has 180108 states and 218662 transitions. Word has length 110 [2023-12-21 13:18:01,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:01,803 INFO L495 AbstractCegarLoop]: Abstraction has 180108 states and 218662 transitions. [2023-12-21 13:18:01,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:18:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 180108 states and 218662 transitions. [2023-12-21 13:18:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:18:01,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:01,813 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 13:18:01,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:18:01,813 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:01,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2124194213, now seen corresponding path program 1 times [2023-12-21 13:18:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:01,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858747154] [2023-12-21 13:18:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:02,107 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 13:18:02,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:02,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858747154] [2023-12-21 13:18:02,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858747154] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:02,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596321630] [2023-12-21 13:18:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:02,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:02,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:02,109 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 13:18:02,111 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 13:18:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:18:02,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:02,929 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 13:18:02,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:18:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596321630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:18:02,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:18:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2023-12-21 13:18:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011475985] [2023-12-21 13:18:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:18:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:18:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:02,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:18:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:18:02,931 INFO L87 Difference]: Start difference. First operand 180108 states and 218662 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:18:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:04,299 INFO L93 Difference]: Finished difference Result 239642 states and 290593 transitions. [2023-12-21 13:18:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:18:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:18:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:04,535 INFO L225 Difference]: With dead ends: 239642 [2023-12-21 13:18:04,535 INFO L226 Difference]: Without dead ends: 199913 [2023-12-21 13:18:04,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1408, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 13:18:04,562 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1008 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:04,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 4038 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:18:04,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199913 states. [2023-12-21 13:18:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199913 to 182162. [2023-12-21 13:18:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182162 states, 182161 states have (on average 1.2124000197627374) internal successors, (220852), 182161 states have internal predecessors, (220852), 0 states have call successors, (0), 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 13:18:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182162 states to 182162 states and 220852 transitions. [2023-12-21 13:18:06,822 INFO L78 Accepts]: Start accepts. Automaton has 182162 states and 220852 transitions. Word has length 110 [2023-12-21 13:18:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:06,822 INFO L495 AbstractCegarLoop]: Abstraction has 182162 states and 220852 transitions. [2023-12-21 13:18:06,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 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 13:18:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 182162 states and 220852 transitions. [2023-12-21 13:18:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:18:06,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:06,832 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 13:18:06,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 13:18:07,037 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,SelfDestructingSolverStorable45 [2023-12-21 13:18:07,037 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -327728894, now seen corresponding path program 1 times [2023-12-21 13:18:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564665565] [2023-12-21 13:18:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:07,377 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 13:18:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:07,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564665565] [2023-12-21 13:18:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564665565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:07,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177865305] [2023-12-21 13:18:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:07,378 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 13:18:07,380 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 13:18:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:07,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:18:07,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:08,206 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 13:18:08,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:18:08,758 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 13:18:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177865305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:18:08,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:18:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 32 [2023-12-21 13:18:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886897750] [2023-12-21 13:18:08,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:18:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:18:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:18:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:18:08,760 INFO L87 Difference]: Start difference. First operand 182162 states and 220852 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 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 13:18:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:11,630 INFO L93 Difference]: Finished difference Result 380172 states and 458565 transitions. [2023-12-21 13:18:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 13:18:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 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 13:18:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:12,069 INFO L225 Difference]: With dead ends: 380172 [2023-12-21 13:18:12,070 INFO L226 Difference]: Without dead ends: 334026 [2023-12-21 13:18:12,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=794, Invalid=3112, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 13:18:12,159 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2484 mSDsluCounter, 8711 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 9234 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:12,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2484 Valid, 9234 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:18:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334026 states. [2023-12-21 13:18:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334026 to 196018. [2023-12-21 13:18:14,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196018 states, 196017 states have (on average 1.21059397909365) internal successors, (237297), 196017 states have internal predecessors, (237297), 0 states have call successors, (0), 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 13:18:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196018 states to 196018 states and 237297 transitions. [2023-12-21 13:18:15,212 INFO L78 Accepts]: Start accepts. Automaton has 196018 states and 237297 transitions. Word has length 110 [2023-12-21 13:18:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:15,212 INFO L495 AbstractCegarLoop]: Abstraction has 196018 states and 237297 transitions. [2023-12-21 13:18:15,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 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 13:18:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 196018 states and 237297 transitions. [2023-12-21 13:18:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:18:15,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:15,224 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:18:15,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 13:18:15,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-21 13:18:15,429 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:15,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2062059753, now seen corresponding path program 1 times [2023-12-21 13:18:15,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906444893] [2023-12-21 13:18:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:15,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:18:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906444893] [2023-12-21 13:18:15,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906444893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:18:15,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:18:15,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:18:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303016461] [2023-12-21 13:18:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:18:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:18:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:18:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:18:15,463 INFO L87 Difference]: Start difference. First operand 196018 states and 237297 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 13:18:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:16,359 INFO L93 Difference]: Finished difference Result 272864 states and 330345 transitions. [2023-12-21 13:18:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:18:16,360 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 13:18:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:16,669 INFO L225 Difference]: With dead ends: 272864 [2023-12-21 13:18:16,669 INFO L226 Difference]: Without dead ends: 202214 [2023-12-21 13:18:16,750 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 13:18:16,751 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 76 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:16,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 434 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:18:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202214 states. [2023-12-21 13:18:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202214 to 187792. [2023-12-21 13:18:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187792 states, 187791 states have (on average 1.2068682737724385) internal successors, (226639), 187791 states have internal predecessors, (226639), 0 states have call successors, (0), 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 13:18:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187792 states to 187792 states and 226639 transitions. [2023-12-21 13:18:19,165 INFO L78 Accepts]: Start accepts. Automaton has 187792 states and 226639 transitions. Word has length 111 [2023-12-21 13:18:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:19,166 INFO L495 AbstractCegarLoop]: Abstraction has 187792 states and 226639 transitions. [2023-12-21 13:18:19,166 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 13:18:19,166 INFO L276 IsEmpty]: Start isEmpty. Operand 187792 states and 226639 transitions. [2023-12-21 13:18:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:18:19,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:19,178 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 13:18:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 13:18:19,178 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:19,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1801321871, now seen corresponding path program 1 times [2023-12-21 13:18:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:19,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020712684] [2023-12-21 13:18:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:19,560 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 13:18:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020712684] [2023-12-21 13:18:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020712684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070423342] [2023-12-21 13:18:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:19,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:19,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:19,561 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 13:18:19,563 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 13:18:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:19,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:18:19,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:20,458 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 13:18:20,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:18:20,942 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 13:18:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070423342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:18:20,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:18:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 37 [2023-12-21 13:18:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748597371] [2023-12-21 13:18:20,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:18:20,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:18:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:20,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:18:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:18:20,944 INFO L87 Difference]: Start difference. First operand 187792 states and 226639 transitions. Second operand has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 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 13:18:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:23,545 INFO L93 Difference]: Finished difference Result 425265 states and 512303 transitions. [2023-12-21 13:18:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 13:18:23,545 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 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 111 [2023-12-21 13:18:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:24,112 INFO L225 Difference]: With dead ends: 425265 [2023-12-21 13:18:24,113 INFO L226 Difference]: Without dead ends: 393567 [2023-12-21 13:18:24,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=521, Invalid=2671, Unknown=0, NotChecked=0, Total=3192 [2023-12-21 13:18:24,509 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 3859 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3859 SdHoareTripleChecker+Valid, 8131 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3859 Valid, 8131 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:18:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393567 states. [2023-12-21 13:18:26,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393567 to 187828. [2023-12-21 13:18:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187828 states, 187827 states have (on average 1.2068286242127064) internal successors, (226675), 187827 states have internal predecessors, (226675), 0 states have call successors, (0), 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 13:18:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187828 states to 187828 states and 226675 transitions. [2023-12-21 13:18:27,545 INFO L78 Accepts]: Start accepts. Automaton has 187828 states and 226675 transitions. Word has length 111 [2023-12-21 13:18:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 187828 states and 226675 transitions. [2023-12-21 13:18:27,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 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 13:18:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 187828 states and 226675 transitions. [2023-12-21 13:18:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:18:27,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:27,557 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 13:18:27,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-21 13:18:27,761 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,SelfDestructingSolverStorable48 [2023-12-21 13:18:27,762 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:27,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1743082722, now seen corresponding path program 1 times [2023-12-21 13:18:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958383262] [2023-12-21 13:18:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:18:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958383262] [2023-12-21 13:18:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958383262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:18:28,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:18:28,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:18:28,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185159793] [2023-12-21 13:18:28,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:18:28,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:18:28,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:18:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:18:28,172 INFO L87 Difference]: Start difference. First operand 187828 states and 226675 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 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 13:18:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:29,641 INFO L93 Difference]: Finished difference Result 255923 states and 309452 transitions. [2023-12-21 13:18:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:18:29,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 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 111 [2023-12-21 13:18:29,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:29,913 INFO L225 Difference]: With dead ends: 255923 [2023-12-21 13:18:29,913 INFO L226 Difference]: Without dead ends: 222883 [2023-12-21 13:18:29,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:18:29,979 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1565 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:29,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 2123 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:18:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222883 states. [2023-12-21 13:18:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222883 to 172739. [2023-12-21 13:18:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172739 states, 172738 states have (on average 1.205994048790654) internal successors, (208321), 172738 states have internal predecessors, (208321), 0 states have call successors, (0), 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 13:18:32,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172739 states to 172739 states and 208321 transitions. [2023-12-21 13:18:32,251 INFO L78 Accepts]: Start accepts. Automaton has 172739 states and 208321 transitions. Word has length 111 [2023-12-21 13:18:32,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:32,251 INFO L495 AbstractCegarLoop]: Abstraction has 172739 states and 208321 transitions. [2023-12-21 13:18:32,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 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 13:18:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 172739 states and 208321 transitions. [2023-12-21 13:18:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:18:32,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:32,261 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 13:18:32,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 13:18:32,261 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:32,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1531965190, now seen corresponding path program 1 times [2023-12-21 13:18:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130468119] [2023-12-21 13:18:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:32,799 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 13:18:32,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:32,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130468119] [2023-12-21 13:18:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130468119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:32,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038505495] [2023-12-21 13:18:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:32,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:32,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:32,800 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 13:18:32,835 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 13:18:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:32,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:18:32,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:33,473 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 13:18:33,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:18:33,877 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 13:18:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038505495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:18:33,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:18:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2023-12-21 13:18:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135973430] [2023-12-21 13:18:33,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:18:33,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:18:33,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:18:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:18:33,878 INFO L87 Difference]: Start difference. First operand 172739 states and 208321 transitions. Second operand has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 33 states have internal predecessors, (275), 0 states have call successors, (0), 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 13:18:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:35,480 INFO L93 Difference]: Finished difference Result 236388 states and 285123 transitions. [2023-12-21 13:18:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 13:18:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 33 states have internal predecessors, (275), 0 states have call successors, (0), 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 13:18:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:35,736 INFO L225 Difference]: With dead ends: 236388 [2023-12-21 13:18:35,736 INFO L226 Difference]: Without dead ends: 200734 [2023-12-21 13:18:35,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 201 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 13:18:35,787 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2768 mSDsluCounter, 4784 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 5205 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:35,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2768 Valid, 5205 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:18:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200734 states. [2023-12-21 13:18:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200734 to 167525. [2023-12-21 13:18:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167525 states, 167524 states have (on average 1.2038215419880136) internal successors, (201669), 167524 states have internal predecessors, (201669), 0 states have call successors, (0), 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 13:18:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167525 states to 167525 states and 201669 transitions. [2023-12-21 13:18:37,720 INFO L78 Accepts]: Start accepts. Automaton has 167525 states and 201669 transitions. Word has length 111 [2023-12-21 13:18:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:37,721 INFO L495 AbstractCegarLoop]: Abstraction has 167525 states and 201669 transitions. [2023-12-21 13:18:37,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.333333333333334) internal successors, (275), 33 states have internal predecessors, (275), 0 states have call successors, (0), 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 13:18:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 167525 states and 201669 transitions. [2023-12-21 13:18:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:18:37,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:37,733 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 13:18:37,740 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 13:18:37,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:37,941 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:37,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1575397160, now seen corresponding path program 1 times [2023-12-21 13:18:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322012160] [2023-12-21 13:18:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:18:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322012160] [2023-12-21 13:18:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322012160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:18:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:18:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:18:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875937220] [2023-12-21 13:18:38,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:18:38,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:18:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:18:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:18:38,018 INFO L87 Difference]: Start difference. First operand 167525 states and 201669 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 13:18:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:38,849 INFO L93 Difference]: Finished difference Result 238891 states and 285735 transitions. [2023-12-21 13:18:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:18:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 113 [2023-12-21 13:18:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:39,041 INFO L225 Difference]: With dead ends: 238891 [2023-12-21 13:18:39,041 INFO L226 Difference]: Without dead ends: 176326 [2023-12-21 13:18:39,105 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 13:18:39,106 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 742 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:39,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 387 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:18:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176326 states. [2023-12-21 13:18:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176326 to 167435. [2023-12-21 13:18:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167435 states, 167434 states have (on average 1.2038713761840487) internal successors, (201569), 167434 states have internal predecessors, (201569), 0 states have call successors, (0), 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 13:18:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167435 states to 167435 states and 201569 transitions. [2023-12-21 13:18:41,234 INFO L78 Accepts]: Start accepts. Automaton has 167435 states and 201569 transitions. Word has length 113 [2023-12-21 13:18:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:41,234 INFO L495 AbstractCegarLoop]: Abstraction has 167435 states and 201569 transitions. [2023-12-21 13:18:41,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 13:18:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 167435 states and 201569 transitions. [2023-12-21 13:18:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:18:41,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:41,243 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 13:18:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 13:18:41,244 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:41,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1025243901, now seen corresponding path program 1 times [2023-12-21 13:18:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625206947] [2023-12-21 13:18:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:41,513 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 13:18:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625206947] [2023-12-21 13:18:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625206947] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487022054] [2023-12-21 13:18:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:41,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:41,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:41,516 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 13:18:41,540 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 13:18:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:41,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:18:41,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:42,391 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 13:18:42,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:18:43,286 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 13:18:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487022054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:18:43,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:18:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-21 13:18:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598330048] [2023-12-21 13:18:43,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:18:43,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 13:18:43,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 13:18:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:18:43,288 INFO L87 Difference]: Start difference. First operand 167435 states and 201569 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 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 13:18:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:18:45,339 INFO L93 Difference]: Finished difference Result 350031 states and 419767 transitions. [2023-12-21 13:18:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:18:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 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 13:18:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:18:45,721 INFO L225 Difference]: With dead ends: 350031 [2023-12-21 13:18:45,721 INFO L226 Difference]: Without dead ends: 297008 [2023-12-21 13:18:45,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1232, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 13:18:45,798 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1448 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:18:45,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 2127 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:18:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297008 states. [2023-12-21 13:18:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297008 to 167710. [2023-12-21 13:18:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167710 states, 167709 states have (on average 1.2036980722561104) internal successors, (201871), 167709 states have internal predecessors, (201871), 0 states have call successors, (0), 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 13:18:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167710 states to 167710 states and 201871 transitions. [2023-12-21 13:18:48,221 INFO L78 Accepts]: Start accepts. Automaton has 167710 states and 201871 transitions. Word has length 113 [2023-12-21 13:18:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:18:48,221 INFO L495 AbstractCegarLoop]: Abstraction has 167710 states and 201871 transitions. [2023-12-21 13:18:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 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 13:18:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 167710 states and 201871 transitions. [2023-12-21 13:18:48,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 13:18:48,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:18:48,232 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, 1] [2023-12-21 13:18:48,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 13:18:48,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:48,437 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:18:48,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:18:48,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1277395513, now seen corresponding path program 1 times [2023-12-21 13:18:48,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:18:48,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64357253] [2023-12-21 13:18:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:18:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:49,060 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 13:18:49,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:18:49,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64357253] [2023-12-21 13:18:49,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64357253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:18:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181311444] [2023-12-21 13:18:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:18:49,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:18:49,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:18:49,062 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 13:18:49,100 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 13:18:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:18:49,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 13:18:49,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:18:51,294 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 13:18:51,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:18:52,034 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 13:18:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181311444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:18:52,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:18:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 13] total 42 [2023-12-21 13:18:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852779355] [2023-12-21 13:18:52,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:18:52,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 13:18:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:18:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 13:18:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 13:18:52,036 INFO L87 Difference]: Start difference. First operand 167710 states and 201871 transitions. Second operand has 42 states, 42 states have (on average 6.666666666666667) internal successors, (280), 42 states have internal predecessors, (280), 0 states have call successors, (0), 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 13:19:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:19:49,335 INFO L93 Difference]: Finished difference Result 462789 states and 548680 transitions. [2023-12-21 13:19:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 464 states. [2023-12-21 13:19:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.666666666666667) internal successors, (280), 42 states have internal predecessors, (280), 0 states have call successors, (0), 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 114 [2023-12-21 13:19:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:19:49,929 INFO L225 Difference]: With dead ends: 462789 [2023-12-21 13:19:49,929 INFO L226 Difference]: Without dead ends: 403842 [2023-12-21 13:19:50,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113185 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=25763, Invalid=224737, Unknown=0, NotChecked=0, Total=250500 [2023-12-21 13:19:50,059 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 17078 mSDsluCounter, 19994 mSDsCounter, 0 mSdLazyCounter, 21510 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17078 SdHoareTripleChecker+Valid, 21092 SdHoareTripleChecker+Invalid, 21801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 21510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:19:50,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17078 Valid, 21092 Invalid, 21801 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [291 Valid, 21510 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2023-12-21 13:19:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403842 states. [2023-12-21 13:19:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403842 to 167839. [2023-12-21 13:19:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167839 states, 167838 states have (on average 1.2036189659076013) internal successors, (202013), 167838 states have internal predecessors, (202013), 0 states have call successors, (0), 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 13:19:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167839 states to 167839 states and 202013 transitions. [2023-12-21 13:19:53,972 INFO L78 Accepts]: Start accepts. Automaton has 167839 states and 202013 transitions. Word has length 114 [2023-12-21 13:19:53,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:19:53,972 INFO L495 AbstractCegarLoop]: Abstraction has 167839 states and 202013 transitions. [2023-12-21 13:19:53,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.666666666666667) internal successors, (280), 42 states have internal predecessors, (280), 0 states have call successors, (0), 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 13:19:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 167839 states and 202013 transitions. [2023-12-21 13:19:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 13:19:53,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:19:53,985 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, 1, 1] [2023-12-21 13:19:54,008 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 13:19:54,191 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,SelfDestructingSolverStorable53 [2023-12-21 13:19:54,191 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:19:54,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:19:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1656275788, now seen corresponding path program 1 times [2023-12-21 13:19:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:19:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296365538] [2023-12-21 13:19:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:19:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:19:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:19:55,451 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 13:19:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:19:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296365538] [2023-12-21 13:19:55,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296365538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:19:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193084297] [2023-12-21 13:19:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:19:55,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:19:55,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:19:55,461 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 13:19:55,463 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 13:19:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:19:55,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 13:19:55,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:19:56,531 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 13:19:56,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:19:58,101 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 13:19:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193084297] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:19:58,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:19:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 54 [2023-12-21 13:19:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782134638] [2023-12-21 13:19:58,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:19:58,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 13:19:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:19:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 13:19:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2689, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 13:19:58,104 INFO L87 Difference]: Start difference. First operand 167839 states and 202013 transitions. Second operand has 54 states, 54 states have (on average 5.925925925925926) internal successors, (320), 54 states have internal predecessors, (320), 0 states have call successors, (0), 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 13:20:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:20:21,398 INFO L93 Difference]: Finished difference Result 484881 states and 580196 transitions. [2023-12-21 13:20:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-21 13:20:21,399 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.925925925925926) internal successors, (320), 54 states have internal predecessors, (320), 0 states have call successors, (0), 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 115 [2023-12-21 13:20:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:20:22,372 INFO L225 Difference]: With dead ends: 484881 [2023-12-21 13:20:22,372 INFO L226 Difference]: Without dead ends: 450941 [2023-12-21 13:20:22,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19137 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5982, Invalid=56768, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 13:20:22,429 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 6334 mSDsluCounter, 58012 mSDsCounter, 0 mSdLazyCounter, 24610 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6334 SdHoareTripleChecker+Valid, 59869 SdHoareTripleChecker+Invalid, 24677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 24610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:20:22,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6334 Valid, 59869 Invalid, 24677 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [67 Valid, 24610 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-21 13:20:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450941 states. [2023-12-21 13:20:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450941 to 167456. [2023-12-21 13:20:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167456 states, 167455 states have (on average 1.2033382102654444) internal successors, (201505), 167455 states have internal predecessors, (201505), 0 states have call successors, (0), 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 13:20:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167456 states to 167456 states and 201505 transitions. [2023-12-21 13:20:25,705 INFO L78 Accepts]: Start accepts. Automaton has 167456 states and 201505 transitions. Word has length 115 [2023-12-21 13:20:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:20:25,705 INFO L495 AbstractCegarLoop]: Abstraction has 167456 states and 201505 transitions. [2023-12-21 13:20:25,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.925925925925926) internal successors, (320), 54 states have internal predecessors, (320), 0 states have call successors, (0), 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 13:20:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 167456 states and 201505 transitions. [2023-12-21 13:20:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:20:25,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:20:25,722 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, 1, 1, 1] [2023-12-21 13:20:25,731 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 13:20:25,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:20:25,932 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:20:25,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:20:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 213718822, now seen corresponding path program 1 times [2023-12-21 13:20:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:20:25,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663024598] [2023-12-21 13:20:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:20:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:20:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:20:26,848 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 13:20:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:20:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663024598] [2023-12-21 13:20:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663024598] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:20:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781078397] [2023-12-21 13:20:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:20:26,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:20:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:20:26,856 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 13:20:26,858 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 13:20:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:20:26,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 13:20:26,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:20:29,115 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 13:20:29,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:20:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781078397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:20:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:20:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [21] total 47 [2023-12-21 13:20:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589853271] [2023-12-21 13:20:29,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:20:29,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 13:20:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:20:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 13:20:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2009, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 13:20:29,117 INFO L87 Difference]: Start difference. First operand 167456 states and 201505 transitions. Second operand has 28 states, 28 states have (on average 4.142857142857143) internal successors, (116), 27 states have internal predecessors, (116), 0 states have call successors, (0), 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 13:20:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:20:35,807 INFO L93 Difference]: Finished difference Result 293086 states and 352235 transitions. [2023-12-21 13:20:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-21 13:20:35,807 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.142857142857143) internal successors, (116), 27 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-21 13:20:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:20:36,135 INFO L225 Difference]: With dead ends: 293086 [2023-12-21 13:20:36,135 INFO L226 Difference]: Without dead ends: 218732 [2023-12-21 13:20:36,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=887, Invalid=8619, Unknown=0, NotChecked=0, Total=9506 [2023-12-21 13:20:36,199 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 2057 mSDsluCounter, 5852 mSDsCounter, 0 mSdLazyCounter, 5932 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2057 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 5956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:20:36,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2057 Valid, 6222 Invalid, 5956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5932 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 13:20:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218732 states. [2023-12-21 13:20:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218732 to 159950. [2023-12-21 13:20:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159950 states, 159949 states have (on average 1.203446098443879) internal successors, (192490), 159949 states have internal predecessors, (192490), 0 states have call successors, (0), 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 13:20:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159950 states to 159950 states and 192490 transitions. [2023-12-21 13:20:38,536 INFO L78 Accepts]: Start accepts. Automaton has 159950 states and 192490 transitions. Word has length 116 [2023-12-21 13:20:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:20:38,537 INFO L495 AbstractCegarLoop]: Abstraction has 159950 states and 192490 transitions. [2023-12-21 13:20:38,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.142857142857143) internal successors, (116), 27 states have internal predecessors, (116), 0 states have call successors, (0), 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 13:20:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 159950 states and 192490 transitions. [2023-12-21 13:20:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:20:38,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:20:38,545 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, 1, 1, 1] [2023-12-21 13:20:38,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 13:20:38,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:20:38,751 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:20:38,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:20:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1852116664, now seen corresponding path program 1 times [2023-12-21 13:20:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:20:38,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154796016] [2023-12-21 13:20:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:20:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:20:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:20:39,545 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 13:20:39,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:20:39,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154796016] [2023-12-21 13:20:39,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154796016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:20:39,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004814171] [2023-12-21 13:20:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:20:39,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:20:39,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:20:39,547 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 13:20:39,549 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 13:20:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:20:39,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:20:39,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:20:40,553 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 13:20:40,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:20:44,881 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 13:20:44,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004814171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:20:44,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:20:44,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 18] total 51 [2023-12-21 13:20:44,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943828731] [2023-12-21 13:20:44,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:20:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-21 13:20:44,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:20:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-21 13:20:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2377, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 13:20:44,884 INFO L87 Difference]: Start difference. First operand 159950 states and 192490 transitions. Second operand has 51 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 0 states have call successors, (0), 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 13:21:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:03,928 INFO L93 Difference]: Finished difference Result 444258 states and 531505 transitions. [2023-12-21 13:21:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-21 13:21:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 0 states have call successors, (0), 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 116 [2023-12-21 13:21:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:04,456 INFO L225 Difference]: With dead ends: 444258 [2023-12-21 13:21:04,457 INFO L226 Difference]: Without dead ends: 379649 [2023-12-21 13:21:04,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14049 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4813, Invalid=39919, Unknown=0, NotChecked=0, Total=44732 [2023-12-21 13:21:04,566 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 5516 mSDsluCounter, 32464 mSDsCounter, 0 mSdLazyCounter, 12836 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 33404 SdHoareTripleChecker+Invalid, 12849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:04,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5516 Valid, 33404 Invalid, 12849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 12836 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-21 13:21:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379649 states. [2023-12-21 13:21:07,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379649 to 168511. [2023-12-21 13:21:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168511 states, 168510 states have (on average 1.202599252269895) internal successors, (202650), 168510 states have internal predecessors, (202650), 0 states have call successors, (0), 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 13:21:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168511 states to 168511 states and 202650 transitions. [2023-12-21 13:21:08,239 INFO L78 Accepts]: Start accepts. Automaton has 168511 states and 202650 transitions. Word has length 116 [2023-12-21 13:21:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:08,239 INFO L495 AbstractCegarLoop]: Abstraction has 168511 states and 202650 transitions. [2023-12-21 13:21:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.254901960784314) internal successors, (319), 51 states have internal predecessors, (319), 0 states have call successors, (0), 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 13:21:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 168511 states and 202650 transitions. [2023-12-21 13:21:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 13:21:08,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:08,248 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, 1, 1, 1] [2023-12-21 13:21:08,259 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 13:21:08,453 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 13:21:08,454 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1975062622, now seen corresponding path program 1 times [2023-12-21 13:21:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513037950] [2023-12-21 13:21:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,226 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 13:21:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513037950] [2023-12-21 13:21:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513037950] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:21:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172729410] [2023-12-21 13:21:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:09,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:21:09,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:09,228 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 13:21:09,229 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 13:21:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:09,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 13:21:09,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:21:11,805 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 13:21:11,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:21:14,020 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 13:21:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172729410] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:21:14,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:21:14,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 26] total 70 [2023-12-21 13:21:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223341562] [2023-12-21 13:21:14,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:21:14,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-21 13:21:14,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-21 13:21:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4433, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 13:21:14,035 INFO L87 Difference]: Start difference. First operand 168511 states and 202650 transitions. Second operand has 70 states, 70 states have (on average 4.485714285714286) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 13:24:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:59,061 INFO L93 Difference]: Finished difference Result 675712 states and 796461 transitions. [2023-12-21 13:24:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1327 states. [2023-12-21 13:24:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.485714285714286) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 116 [2023-12-21 13:24:59,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:00,044 INFO L225 Difference]: With dead ends: 675712 [2023-12-21 13:25:00,045 INFO L226 Difference]: Without dead ends: 657343 [2023-12-21 13:25:00,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 1384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922366 ImplicationChecksByTransitivity, 185.5s TimeCoverageRelationStatistics Valid=124255, Invalid=1795355, Unknown=0, NotChecked=0, Total=1919610 [2023-12-21 13:25:00,593 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 48896 mSDsluCounter, 40459 mSDsCounter, 0 mSdLazyCounter, 40199 mSolverCounterSat, 1912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48896 SdHoareTripleChecker+Valid, 41676 SdHoareTripleChecker+Invalid, 42111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1912 IncrementalHoareTripleChecker+Valid, 40199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:00,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48896 Valid, 41676 Invalid, 42111 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1912 Valid, 40199 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2023-12-21 13:25:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657343 states. [2023-12-21 13:25:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657343 to 168529. [2023-12-21 13:25:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168529 states, 168528 states have (on average 1.202577613215608) internal successors, (202668), 168528 states have internal predecessors, (202668), 0 states have call successors, (0), 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 13:25:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168529 states to 168529 states and 202668 transitions. [2023-12-21 13:25:05,195 INFO L78 Accepts]: Start accepts. Automaton has 168529 states and 202668 transitions. Word has length 116 [2023-12-21 13:25:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 168529 states and 202668 transitions. [2023-12-21 13:25:05,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.485714285714286) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 13:25:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 168529 states and 202668 transitions. [2023-12-21 13:25:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 13:25:05,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:05,206 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, 1, 1, 1, 1, 1] [2023-12-21 13:25:05,246 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 13:25:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:05,445 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:05,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash -345437292, now seen corresponding path program 1 times [2023-12-21 13:25:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296114547] [2023-12-21 13:25:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:06,842 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 13:25:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296114547] [2023-12-21 13:25:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296114547] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193911708] [2023-12-21 13:25:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:06,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:06,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:06,845 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 13:25:06,845 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 13:25:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:06,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 13:25:06,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:09,209 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 13:25:09,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:12,223 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 13:25:12,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193911708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:12,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:12,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 24] total 70 [2023-12-21 13:25:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255997832] [2023-12-21 13:25:12,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:12,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-21 13:25:12,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-21 13:25:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4548, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 13:25:12,225 INFO L87 Difference]: Start difference. First operand 168529 states and 202668 transitions. Second operand has 71 states, 71 states have (on average 4.084507042253521) internal successors, (290), 70 states have internal predecessors, (290), 0 states have call successors, (0), 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 13:27:09,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2023-12-21 13:27:09,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77834 ImplicationChecksByTransitivity, 111.0s TimeCoverageRelationStatistics Valid=19101, Invalid=180261, Unknown=0, NotChecked=0, Total=199362 [2023-12-21 13:27:09,812 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 19300 mSDsluCounter, 9203 mSDsCounter, 0 mSdLazyCounter, 11069 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19300 SdHoareTripleChecker+Valid, 9563 SdHoareTripleChecker+Invalid, 11688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 11069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:09,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19300 Valid, 9563 Invalid, 11688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [619 Valid, 11069 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-21 13:27:09,814 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 13:27:09,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 13:27:09,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 13:27:09,843 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 13:27:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:10,019 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (168529states) and FLOYD_HOARE automaton (currently 378 states, 71 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 447 known predicates. [2023-12-21 13:27:10,023 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] [2023-12-21 13:27:10,025 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 13:27:10,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:27:10 BoogieIcfgContainer [2023-12-21 13:27:10,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 13:27:10,027 INFO L158 Benchmark]: Toolchain (without parser) took 796602.32ms. Allocated memory was 196.1MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 134.5MB in the beginning and 5.8GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-21 13:27:10,027 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 196.1MB. Free memory was 145.9MB in the beginning and 145.7MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 13:27:10,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.93ms. Allocated memory was 196.1MB in the beginning and 254.8MB in the end (delta: 58.7MB). Free memory was 134.3MB in the beginning and 217.4MB in the end (delta: -83.1MB). Peak memory consumption was 25.3MB. Max. memory is 8.0GB. [2023-12-21 13:27:10,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.73ms. Allocated memory is still 254.8MB. Free memory was 217.4MB in the beginning and 213.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 13:27:10,028 INFO L158 Benchmark]: Boogie Preprocessor took 97.57ms. Allocated memory is still 254.8MB. Free memory was 213.7MB in the beginning and 210.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 13:27:10,028 INFO L158 Benchmark]: RCFGBuilder took 638.43ms. Allocated memory is still 254.8MB. Free memory was 210.0MB in the beginning and 169.1MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-21 13:27:10,028 INFO L158 Benchmark]: TraceAbstraction took 795395.58ms. Allocated memory was 254.8MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 168.1MB in the beginning and 5.8GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-21 13:27:10,028 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 196.1MB. Free memory was 145.9MB in the beginning and 145.7MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 414.93ms. Allocated memory was 196.1MB in the beginning and 254.8MB in the end (delta: 58.7MB). Free memory was 134.3MB in the beginning and 217.4MB in the end (delta: -83.1MB). Peak memory consumption was 25.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.73ms. Allocated memory is still 254.8MB. Free memory was 217.4MB in the beginning and 213.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 97.57ms. Allocated memory is still 254.8MB. Free memory was 213.7MB in the beginning and 210.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 638.43ms. Allocated memory is still 254.8MB. Free memory was 210.0MB in the beginning and 169.1MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 795395.58ms. Allocated memory was 254.8MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 168.1MB in the beginning and 5.8GB in the end (delta: -5.7GB). Peak memory consumption was 2.1GB. 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: 397]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 397). Cancelled while NwaCegarLoop was constructing difference of abstraction (168529states) and FLOYD_HOARE automaton (currently 378 states, 71 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 447 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 795.3s, OverallIterations: 59, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 661.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217912 SdHoareTripleChecker+Valid, 110.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 217912 mSDsluCounter, 291697 SdHoareTripleChecker+Invalid, 96.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 269972 mSDsCounter, 4279 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180657 IncrementalHoareTripleChecker+Invalid, 184936 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4279 mSolverCounterUnsat, 21725 mSDtfsCounter, 180657 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8919 GetRequests, 3294 SyntacticMatches, 14 SemanticMatches, 5610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805685 ImplicationChecksByTransitivity, 501.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196018occurred in iteration=47, InterpolantAutomatonStates: 4656, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 74.5s AutomataMinimizationTime, 58 MinimizatonAttempts, 4543762 StatesRemovedByMinimization, 58 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 50.7s InterpolantComputationTime, 6995 NumberOfCodeBlocks, 6995 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 8549 ConstructedInterpolants, 0 QuantifiedInterpolants, 98174 SizeOfPredicates, 160 NumberOfNonLiveVariables, 7988 ConjunctsInSsa, 427 ConjunctsInUnsatCore, 92 InterpolantComputations, 44 PerfectInterpolantSequences, 428/567 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