/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:20:25,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:20:25,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:20:25,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:20:25,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:20:25,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:20:25,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:20:25,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:20:25,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:20:25,175 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:20:25,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:20:25,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:20:25,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:20:25,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:20:25,177 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:20:25,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:20:25,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:20:25,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:20:25,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:20:25,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:20:25,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:20:25,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:20:25,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:20:25,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:20:25,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:20:25,180 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:20:25,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:20:25,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:20:25,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:20:25,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:20:25,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:20:25,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:20:25,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:20:25,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:20:25,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:20:25,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:20:25,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:20:25,183 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:20:25,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:20:25,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:20:25,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:20:25,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:20:25,395 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:20:25,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:20:26,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:20:26,575 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:20:26,575 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:20:26,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed51d37ec/9f3b1995e75d4991a13d354af908f90b/FLAG040cc1d85 [2023-12-16 06:20:26,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed51d37ec/9f3b1995e75d4991a13d354af908f90b [2023-12-16 06:20:26,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:20:26,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:20:26,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:20:26,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:20:26,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:20:26,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5356802f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26, skipping insertion in model container [2023-12-16 06:20:26,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,652 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:20:26,808 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2023-12-16 06:20:26,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:20:26,858 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:20:26,901 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7163,7176] [2023-12-16 06:20:26,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:20:26,929 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:20:26,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26 WrapperNode [2023-12-16 06:20:26,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:20:26,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:20:26,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:20:26,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:20:26,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,975 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 638 [2023-12-16 06:20:26,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:20:26,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:20:26,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:20:26,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:20:26,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:26,989 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,001 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 06:20:27,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:20:27,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:20:27,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:20:27,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:20:27,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (1/1) ... [2023-12-16 06:20:27,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:20:27,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:27,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 06:20:27,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 06:20:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:20:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:20:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:20:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:20:27,206 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:20:27,207 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:20:27,718 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:20:27,738 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:20:27,738 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:20:27,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:20:27 BoogieIcfgContainer [2023-12-16 06:20:27,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:20:27,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:20:27,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:20:27,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:20:27,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:20:26" (1/3) ... [2023-12-16 06:20:27,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3194f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:20:27, skipping insertion in model container [2023-12-16 06:20:27,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:20:26" (2/3) ... [2023-12-16 06:20:27,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3194f6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:20:27, skipping insertion in model container [2023-12-16 06:20:27,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:20:27" (3/3) ... [2023-12-16 06:20:27,744 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-16 06:20:27,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:20:27,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:20:27,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:20:27,793 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;@6ddaaf24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:20:27,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:20:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 06:20:27,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:27,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:27,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:27,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1575541599, now seen corresponding path program 1 times [2023-12-16 06:20:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831644333] [2023-12-16 06:20:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:27,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831644333] [2023-12-16 06:20:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831644333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:28,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:28,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216526712] [2023-12-16 06:20:28,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:28,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:28,180 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.713375796178344) internal successors, (269), 158 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:28,378 INFO L93 Difference]: Finished difference Result 510 states and 828 transitions. [2023-12-16 06:20:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-16 06:20:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:28,393 INFO L225 Difference]: With dead ends: 510 [2023-12-16 06:20:28,394 INFO L226 Difference]: Without dead ends: 436 [2023-12-16 06:20:28,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:28,398 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 905 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:28,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1264 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:20:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-16 06:20:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 254. [2023-12-16 06:20:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.517786561264822) internal successors, (384), 253 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2023-12-16 06:20:28,436 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 48 [2023-12-16 06:20:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:28,436 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2023-12-16 06:20:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2023-12-16 06:20:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 06:20:28,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:28,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:28,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:20:28,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:28,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1998714766, now seen corresponding path program 1 times [2023-12-16 06:20:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046510652] [2023-12-16 06:20:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046510652] [2023-12-16 06:20:28,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046510652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:28,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:28,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923456675] [2023-12-16 06:20:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:28,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:28,517 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:28,546 INFO L93 Difference]: Finished difference Result 626 states and 964 transitions. [2023-12-16 06:20:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 06:20:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:28,549 INFO L225 Difference]: With dead ends: 626 [2023-12-16 06:20:28,550 INFO L226 Difference]: Without dead ends: 428 [2023-12-16 06:20:28,552 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 [2023-12-16 06:20:28,553 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 160 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:28,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-16 06:20:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2023-12-16 06:20:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.5058823529411764) internal successors, (640), 425 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 640 transitions. [2023-12-16 06:20:28,573 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 640 transitions. Word has length 51 [2023-12-16 06:20:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:28,574 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 640 transitions. [2023-12-16 06:20:28,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 640 transitions. [2023-12-16 06:20:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 06:20:28,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:28,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:20:28,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:28,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash -794348179, now seen corresponding path program 1 times [2023-12-16 06:20:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855238368] [2023-12-16 06:20:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:28,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855238368] [2023-12-16 06:20:28,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855238368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:28,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:28,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:28,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315317233] [2023-12-16 06:20:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:28,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:28,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:28,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:28,656 INFO L87 Difference]: Start difference. First operand 426 states and 640 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:28,676 INFO L93 Difference]: Finished difference Result 1076 states and 1637 transitions. [2023-12-16 06:20:28,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:28,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 06:20:28,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:28,679 INFO L225 Difference]: With dead ends: 1076 [2023-12-16 06:20:28,679 INFO L226 Difference]: Without dead ends: 748 [2023-12-16 06:20:28,680 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 [2023-12-16 06:20:28,683 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:28,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-16 06:20:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-12-16 06:20:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4953020134228188) internal successors, (1114), 745 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1114 transitions. [2023-12-16 06:20:28,708 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1114 transitions. Word has length 51 [2023-12-16 06:20:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:28,712 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1114 transitions. [2023-12-16 06:20:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1114 transitions. [2023-12-16 06:20:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 06:20:28,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:28,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:20:28,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:28,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:28,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1645949330, now seen corresponding path program 1 times [2023-12-16 06:20:28,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:28,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700425864] [2023-12-16 06:20:28,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:28,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:28,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700425864] [2023-12-16 06:20:28,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700425864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:28,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719278474] [2023-12-16 06:20:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:28,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:28,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:28,790 INFO L87 Difference]: Start difference. First operand 746 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:28,813 INFO L93 Difference]: Finished difference Result 1856 states and 2791 transitions. [2023-12-16 06:20:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 06:20:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:28,817 INFO L225 Difference]: With dead ends: 1856 [2023-12-16 06:20:28,817 INFO L226 Difference]: Without dead ends: 1292 [2023-12-16 06:20:28,819 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 [2023-12-16 06:20:28,823 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:28,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-16 06:20:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1290. [2023-12-16 06:20:28,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.4755624515128005) internal successors, (1902), 1289 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1902 transitions. [2023-12-16 06:20:28,842 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1902 transitions. Word has length 51 [2023-12-16 06:20:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:28,842 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1902 transitions. [2023-12-16 06:20:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1902 transitions. [2023-12-16 06:20:28,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:20:28,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:28,844 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] [2023-12-16 06:20:28,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:20:28,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:28,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash 245016470, now seen corresponding path program 1 times [2023-12-16 06:20:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176858645] [2023-12-16 06:20:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176858645] [2023-12-16 06:20:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176858645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133867479] [2023-12-16 06:20:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:28,948 INFO L87 Difference]: Start difference. First operand 1290 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:29,022 INFO L93 Difference]: Finished difference Result 2510 states and 3767 transitions. [2023-12-16 06:20:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:29,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:20:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:29,030 INFO L225 Difference]: With dead ends: 2510 [2023-12-16 06:20:29,030 INFO L226 Difference]: Without dead ends: 2144 [2023-12-16 06:20:29,031 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 [2023-12-16 06:20:29,031 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 639 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:29,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1140 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2023-12-16 06:20:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1739. [2023-12-16 06:20:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 1.4838895281933258) internal successors, (2579), 1738 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2579 transitions. [2023-12-16 06:20:29,075 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2579 transitions. Word has length 52 [2023-12-16 06:20:29,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:29,075 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2579 transitions. [2023-12-16 06:20:29,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2579 transitions. [2023-12-16 06:20:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:20:29,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:29,077 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] [2023-12-16 06:20:29,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:20:29,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:29,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash -102096570, now seen corresponding path program 1 times [2023-12-16 06:20:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586929958] [2023-12-16 06:20:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586929958] [2023-12-16 06:20:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586929958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:29,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955832333] [2023-12-16 06:20:29,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:29,176 INFO L87 Difference]: Start difference. First operand 1739 states and 2579 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:29,239 INFO L93 Difference]: Finished difference Result 2959 states and 4444 transitions. [2023-12-16 06:20:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:29,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:20:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:29,247 INFO L225 Difference]: With dead ends: 2959 [2023-12-16 06:20:29,247 INFO L226 Difference]: Without dead ends: 2593 [2023-12-16 06:20:29,248 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 [2023-12-16 06:20:29,249 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 631 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:29,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 995 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2023-12-16 06:20:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2084. [2023-12-16 06:20:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.4891982717234757) internal successors, (3102), 2083 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3102 transitions. [2023-12-16 06:20:29,286 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3102 transitions. Word has length 52 [2023-12-16 06:20:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3102 transitions. [2023-12-16 06:20:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3102 transitions. [2023-12-16 06:20:29,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:20:29,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:29,288 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] [2023-12-16 06:20:29,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:20:29,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:29,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1890794456, now seen corresponding path program 1 times [2023-12-16 06:20:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:29,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851927031] [2023-12-16 06:20:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:29,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851927031] [2023-12-16 06:20:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851927031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932572138] [2023-12-16 06:20:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:29,367 INFO L87 Difference]: Start difference. First operand 2084 states and 3102 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:29,422 INFO L93 Difference]: Finished difference Result 3358 states and 5044 transitions. [2023-12-16 06:20:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:29,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:20:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:29,430 INFO L225 Difference]: With dead ends: 3358 [2023-12-16 06:20:29,430 INFO L226 Difference]: Without dead ends: 2992 [2023-12-16 06:20:29,431 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 [2023-12-16 06:20:29,432 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 635 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:29,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1066 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2023-12-16 06:20:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2374. [2023-12-16 06:20:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.493046776232617) internal successors, (3543), 2373 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3543 transitions. [2023-12-16 06:20:29,474 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3543 transitions. Word has length 52 [2023-12-16 06:20:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:29,474 INFO L495 AbstractCegarLoop]: Abstraction has 2374 states and 3543 transitions. [2023-12-16 06:20:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3543 transitions. [2023-12-16 06:20:29,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:20:29,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:29,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:29,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:20:29,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:29,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash 906241263, now seen corresponding path program 1 times [2023-12-16 06:20:29,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:29,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076091542] [2023-12-16 06:20:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:29,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076091542] [2023-12-16 06:20:29,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076091542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:29,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:29,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070621503] [2023-12-16 06:20:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:29,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:29,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:29,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:29,547 INFO L87 Difference]: Start difference. First operand 2374 states and 3543 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:29,692 INFO L93 Difference]: Finished difference Result 5638 states and 8418 transitions. [2023-12-16 06:20:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 06:20:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:29,701 INFO L225 Difference]: With dead ends: 5638 [2023-12-16 06:20:29,701 INFO L226 Difference]: Without dead ends: 3308 [2023-12-16 06:20:29,704 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 [2023-12-16 06:20:29,705 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 903 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:29,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 228 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:20:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2023-12-16 06:20:29,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3290. [2023-12-16 06:20:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 1.482213438735178) internal successors, (4875), 3289 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4875 transitions. [2023-12-16 06:20:29,773 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4875 transitions. Word has length 56 [2023-12-16 06:20:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:29,774 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 4875 transitions. [2023-12-16 06:20:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4875 transitions. [2023-12-16 06:20:29,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:20:29,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:29,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:20:29,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:29,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash 616335039, now seen corresponding path program 1 times [2023-12-16 06:20:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751993385] [2023-12-16 06:20:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751993385] [2023-12-16 06:20:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751993385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564932988] [2023-12-16 06:20:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:29,829 INFO L87 Difference]: Start difference. First operand 3290 states and 4875 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:29,970 INFO L93 Difference]: Finished difference Result 7769 states and 11510 transitions. [2023-12-16 06:20:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:29,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 06:20:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:29,980 INFO L225 Difference]: With dead ends: 7769 [2023-12-16 06:20:29,980 INFO L226 Difference]: Without dead ends: 4559 [2023-12-16 06:20:29,984 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 [2023-12-16 06:20:29,985 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 860 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 230 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:20:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-12-16 06:20:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4534. [2023-12-16 06:20:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 1.4683432605338629) internal successors, (6656), 4533 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 6656 transitions. [2023-12-16 06:20:30,049 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 6656 transitions. Word has length 56 [2023-12-16 06:20:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:30,049 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 6656 transitions. [2023-12-16 06:20:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 6656 transitions. [2023-12-16 06:20:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 06:20:30,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:30,051 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] [2023-12-16 06:20:30,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:20:30,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:30,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1205433356, now seen corresponding path program 1 times [2023-12-16 06:20:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401576413] [2023-12-16 06:20:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:30,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:30,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:30,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401576413] [2023-12-16 06:20:30,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401576413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:30,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:30,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:20:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443618806] [2023-12-16 06:20:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:30,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:30,099 INFO L87 Difference]: Start difference. First operand 4534 states and 6656 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:30,243 INFO L93 Difference]: Finished difference Result 10834 states and 15859 transitions. [2023-12-16 06:20:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:30,243 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 [2023-12-16 06:20:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:30,259 INFO L225 Difference]: With dead ends: 10834 [2023-12-16 06:20:30,260 INFO L226 Difference]: Without dead ends: 6326 [2023-12-16 06:20:30,265 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 [2023-12-16 06:20:30,266 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 882 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:30,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 209 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:20:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6326 states. [2023-12-16 06:20:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6326 to 6275. [2023-12-16 06:20:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6275 states, 6274 states have (on average 1.4423015620019126) internal successors, (9049), 6274 states have internal predecessors, (9049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 9049 transitions. [2023-12-16 06:20:30,397 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 9049 transitions. Word has length 57 [2023-12-16 06:20:30,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:30,397 INFO L495 AbstractCegarLoop]: Abstraction has 6275 states and 9049 transitions. [2023-12-16 06:20:30,397 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) [2023-12-16 06:20:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 9049 transitions. [2023-12-16 06:20:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 06:20:30,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:30,399 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] [2023-12-16 06:20:30,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:20:30,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:30,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:30,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1874451944, now seen corresponding path program 1 times [2023-12-16 06:20:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:30,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550914513] [2023-12-16 06:20:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:30,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:30,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550914513] [2023-12-16 06:20:30,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550914513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:30,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:30,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:20:30,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985866242] [2023-12-16 06:20:30,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:20:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:20:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:30,492 INFO L87 Difference]: Start difference. First operand 6275 states and 9049 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:30,817 INFO L93 Difference]: Finished difference Result 24214 states and 34742 transitions. [2023-12-16 06:20:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 06:20:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:30,864 INFO L225 Difference]: With dead ends: 24214 [2023-12-16 06:20:30,865 INFO L226 Difference]: Without dead ends: 20968 [2023-12-16 06:20:30,878 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 [2023-12-16 06:20:30,878 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 2089 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:30,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 347 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20968 states. [2023-12-16 06:20:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20968 to 6295. [2023-12-16 06:20:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6294 states have (on average 1.4415316174134096) internal successors, (9073), 6294 states have internal predecessors, (9073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 9073 transitions. [2023-12-16 06:20:31,145 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 9073 transitions. Word has length 58 [2023-12-16 06:20:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:31,145 INFO L495 AbstractCegarLoop]: Abstraction has 6295 states and 9073 transitions. [2023-12-16 06:20:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 9073 transitions. [2023-12-16 06:20:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 06:20:31,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:31,151 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] [2023-12-16 06:20:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:20:31,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:31,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 911284937, now seen corresponding path program 1 times [2023-12-16 06:20:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412753570] [2023-12-16 06:20:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:31,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412753570] [2023-12-16 06:20:31,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412753570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:31,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:20:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641461831] [2023-12-16 06:20:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:20:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:20:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:31,251 INFO L87 Difference]: Start difference. First operand 6295 states and 9073 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:31,614 INFO L93 Difference]: Finished difference Result 28477 states and 40804 transitions. [2023-12-16 06:20:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:31,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 06:20:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:31,659 INFO L225 Difference]: With dead ends: 28477 [2023-12-16 06:20:31,659 INFO L226 Difference]: Without dead ends: 25379 [2023-12-16 06:20:31,675 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 [2023-12-16 06:20:31,675 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2380 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:31,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 393 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25379 states. [2023-12-16 06:20:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25379 to 6389. [2023-12-16 06:20:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 6388 states have (on average 1.439261114589856) internal successors, (9194), 6388 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 9194 transitions. [2023-12-16 06:20:31,949 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 9194 transitions. Word has length 58 [2023-12-16 06:20:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:31,949 INFO L495 AbstractCegarLoop]: Abstraction has 6389 states and 9194 transitions. [2023-12-16 06:20:31,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 9194 transitions. [2023-12-16 06:20:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 06:20:31,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:31,951 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] [2023-12-16 06:20:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:20:31,952 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:31,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 363659370, now seen corresponding path program 1 times [2023-12-16 06:20:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712091268] [2023-12-16 06:20:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712091268] [2023-12-16 06:20:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712091268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:20:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221752870] [2023-12-16 06:20:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 06:20:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 06:20:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:20:32,047 INFO L87 Difference]: Start difference. First operand 6389 states and 9194 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:32,399 INFO L93 Difference]: Finished difference Result 33778 states and 48450 transitions. [2023-12-16 06:20:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:20:32,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 06:20:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:32,445 INFO L225 Difference]: With dead ends: 33778 [2023-12-16 06:20:32,445 INFO L226 Difference]: Without dead ends: 30680 [2023-12-16 06:20:32,457 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 [2023-12-16 06:20:32,458 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2743 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:32,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 410 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:20:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30680 states. [2023-12-16 06:20:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30680 to 6445. [2023-12-16 06:20:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6445 states, 6444 states have (on average 1.4374612042209807) internal successors, (9263), 6444 states have internal predecessors, (9263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6445 states to 6445 states and 9263 transitions. [2023-12-16 06:20:32,691 INFO L78 Accepts]: Start accepts. Automaton has 6445 states and 9263 transitions. Word has length 58 [2023-12-16 06:20:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:32,692 INFO L495 AbstractCegarLoop]: Abstraction has 6445 states and 9263 transitions. [2023-12-16 06:20:32,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6445 states and 9263 transitions. [2023-12-16 06:20:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:20:32,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:32,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:20:32,695 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:32,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:32,695 INFO L85 PathProgramCache]: Analyzing trace with hash 13401980, now seen corresponding path program 1 times [2023-12-16 06:20:32,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:32,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778499633] [2023-12-16 06:20:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778499633] [2023-12-16 06:20:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778499633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:20:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829304181] [2023-12-16 06:20:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:32,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:20:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:20:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:20:32,895 INFO L87 Difference]: Start difference. First operand 6445 states and 9263 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:33,601 INFO L93 Difference]: Finished difference Result 21542 states and 30926 transitions. [2023-12-16 06:20:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:20:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 06:20:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:33,624 INFO L225 Difference]: With dead ends: 21542 [2023-12-16 06:20:33,624 INFO L226 Difference]: Without dead ends: 16352 [2023-12-16 06:20:33,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-16 06:20:33,633 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1479 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:33,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1196 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:20:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16352 states. [2023-12-16 06:20:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16352 to 6317. [2023-12-16 06:20:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.4344521849271692) internal successors, (9060), 6316 states have internal predecessors, (9060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9060 transitions. [2023-12-16 06:20:33,779 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9060 transitions. Word has length 60 [2023-12-16 06:20:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:33,780 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 9060 transitions. [2023-12-16 06:20:33,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9060 transitions. [2023-12-16 06:20:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:20:33,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:33,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:33,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:20:33,784 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:33,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash -838199171, now seen corresponding path program 1 times [2023-12-16 06:20:33,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:33,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948034672] [2023-12-16 06:20:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:33,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948034672] [2023-12-16 06:20:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948034672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:33,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:33,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:20:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834156327] [2023-12-16 06:20:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:33,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:20:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:20:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:20:33,998 INFO L87 Difference]: Start difference. First operand 6317 states and 9060 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:34,870 INFO L93 Difference]: Finished difference Result 21628 states and 30942 transitions. [2023-12-16 06:20:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 06:20:34,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 06:20:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:34,889 INFO L225 Difference]: With dead ends: 21628 [2023-12-16 06:20:34,889 INFO L226 Difference]: Without dead ends: 16354 [2023-12-16 06:20:34,948 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 [2023-12-16 06:20:34,950 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1915 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:34,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 1209 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:20:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2023-12-16 06:20:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 6128. [2023-12-16 06:20:35,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 6127 states have (on average 1.432022196833687) internal successors, (8774), 6127 states have internal predecessors, (8774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8774 transitions. [2023-12-16 06:20:35,087 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8774 transitions. Word has length 60 [2023-12-16 06:20:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:35,088 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8774 transitions. [2023-12-16 06:20:35,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8774 transitions. [2023-12-16 06:20:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:20:35,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:35,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:35,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:20:35,091 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:35,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1719999038, now seen corresponding path program 1 times [2023-12-16 06:20:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376788784] [2023-12-16 06:20:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376788784] [2023-12-16 06:20:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376788784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:35,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 06:20:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983783070] [2023-12-16 06:20:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 06:20:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 06:20:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:20:35,269 INFO L87 Difference]: Start difference. First operand 6128 states and 8774 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:35,969 INFO L93 Difference]: Finished difference Result 21139 states and 30294 transitions. [2023-12-16 06:20:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 06:20:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 06:20:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:35,987 INFO L225 Difference]: With dead ends: 21139 [2023-12-16 06:20:35,987 INFO L226 Difference]: Without dead ends: 15921 [2023-12-16 06:20:35,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-16 06:20:35,995 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1699 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:35,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1330 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:20:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15921 states. [2023-12-16 06:20:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15921 to 5979. [2023-12-16 06:20:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5979 states, 5978 states have (on average 1.432418869187019) internal successors, (8563), 5978 states have internal predecessors, (8563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 8563 transitions. [2023-12-16 06:20:36,110 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 8563 transitions. Word has length 60 [2023-12-16 06:20:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,110 INFO L495 AbstractCegarLoop]: Abstraction has 5979 states and 8563 transitions. [2023-12-16 06:20:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 8563 transitions. [2023-12-16 06:20:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 06:20:36,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,112 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] [2023-12-16 06:20:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:20:36,112 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 677385480, now seen corresponding path program 1 times [2023-12-16 06:20:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482829689] [2023-12-16 06:20:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:36,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482829689] [2023-12-16 06:20:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482829689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:36,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:36,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350336254] [2023-12-16 06:20:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:36,146 INFO L87 Difference]: Start difference. First operand 5979 states and 8563 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:36,176 INFO L93 Difference]: Finished difference Result 9026 states and 12936 transitions. [2023-12-16 06:20:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 06:20:36,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:36,183 INFO L225 Difference]: With dead ends: 9026 [2023-12-16 06:20:36,183 INFO L226 Difference]: Without dead ends: 5796 [2023-12-16 06:20:36,186 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 [2023-12-16 06:20:36,187 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:36,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 524 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5796 states. [2023-12-16 06:20:36,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5796 to 5794. [2023-12-16 06:20:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5793 states have (on average 1.4127395132055929) internal successors, (8184), 5793 states have internal predecessors, (8184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8184 transitions. [2023-12-16 06:20:36,273 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8184 transitions. Word has length 61 [2023-12-16 06:20:36,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,274 INFO L495 AbstractCegarLoop]: Abstraction has 5794 states and 8184 transitions. [2023-12-16 06:20:36,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8184 transitions. [2023-12-16 06:20:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 06:20:36,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,276 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] [2023-12-16 06:20:36,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:20:36,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 732531518, now seen corresponding path program 1 times [2023-12-16 06:20:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971977384] [2023-12-16 06:20:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:36,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971977384] [2023-12-16 06:20:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971977384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221722027] [2023-12-16 06:20:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:36,317 INFO L87 Difference]: Start difference. First operand 5794 states and 8184 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:36,342 INFO L93 Difference]: Finished difference Result 8078 states and 11407 transitions. [2023-12-16 06:20:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 06:20:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:36,347 INFO L225 Difference]: With dead ends: 8078 [2023-12-16 06:20:36,347 INFO L226 Difference]: Without dead ends: 5013 [2023-12-16 06:20:36,349 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 [2023-12-16 06:20:36,350 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 136 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:36,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 513 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2023-12-16 06:20:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5011. [2023-12-16 06:20:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 1.3884231536926148) internal successors, (6956), 5010 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 6956 transitions. [2023-12-16 06:20:36,397 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 6956 transitions. Word has length 61 [2023-12-16 06:20:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,397 INFO L495 AbstractCegarLoop]: Abstraction has 5011 states and 6956 transitions. [2023-12-16 06:20:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 6956 transitions. [2023-12-16 06:20:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 06:20:36,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,399 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] [2023-12-16 06:20:36,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:20:36,400 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash 373087203, now seen corresponding path program 1 times [2023-12-16 06:20:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570480308] [2023-12-16 06:20:36,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:36,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570480308] [2023-12-16 06:20:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570480308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102364997] [2023-12-16 06:20:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:36,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:36,436 INFO L87 Difference]: Start difference. First operand 5011 states and 6956 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:36,458 INFO L93 Difference]: Finished difference Result 6613 states and 9182 transitions. [2023-12-16 06:20:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 06:20:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:36,462 INFO L225 Difference]: With dead ends: 6613 [2023-12-16 06:20:36,463 INFO L226 Difference]: Without dead ends: 3857 [2023-12-16 06:20:36,465 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 [2023-12-16 06:20:36,466 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 148 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:36,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3857 states. [2023-12-16 06:20:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3857 to 3855. [2023-12-16 06:20:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3854 states have (on average 1.3645563051375194) internal successors, (5259), 3854 states have internal predecessors, (5259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 5259 transitions. [2023-12-16 06:20:36,501 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 5259 transitions. Word has length 61 [2023-12-16 06:20:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,501 INFO L495 AbstractCegarLoop]: Abstraction has 3855 states and 5259 transitions. [2023-12-16 06:20:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 5259 transitions. [2023-12-16 06:20:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:36,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,504 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] [2023-12-16 06:20:36,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:20:36,504 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 447474579, now seen corresponding path program 1 times [2023-12-16 06:20:36,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593410383] [2023-12-16 06:20:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:36,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:36,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593410383] [2023-12-16 06:20:36,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593410383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:36,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:36,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513164228] [2023-12-16 06:20:36,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:36,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:36,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:36,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:36,536 INFO L87 Difference]: Start difference. First operand 3855 states and 5259 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:36,572 INFO L93 Difference]: Finished difference Result 7098 states and 9746 transitions. [2023-12-16 06:20:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:36,573 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 [2023-12-16 06:20:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:36,577 INFO L225 Difference]: With dead ends: 7098 [2023-12-16 06:20:36,577 INFO L226 Difference]: Without dead ends: 5179 [2023-12-16 06:20:36,579 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 [2023-12-16 06:20:36,580 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:36,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2023-12-16 06:20:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 3666. [2023-12-16 06:20:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 1.3639836289222373) internal successors, (4999), 3665 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4999 transitions. [2023-12-16 06:20:36,622 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4999 transitions. Word has length 62 [2023-12-16 06:20:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:36,622 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 4999 transitions. [2023-12-16 06:20:36,622 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) [2023-12-16 06:20:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4999 transitions. [2023-12-16 06:20:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:36,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:36,624 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] [2023-12-16 06:20:36,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:20:36,625 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:36,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1495299694, now seen corresponding path program 1 times [2023-12-16 06:20:36,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941959145] [2023-12-16 06:20:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:37,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:37,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941959145] [2023-12-16 06:20:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941959145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:37,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 06:20:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531901340] [2023-12-16 06:20:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 06:20:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 06:20:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:20:37,113 INFO L87 Difference]: Start difference. First operand 3666 states and 4999 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:38,277 INFO L93 Difference]: Finished difference Result 8009 states and 11009 transitions. [2023-12-16 06:20:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 06:20:38,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:38,284 INFO L225 Difference]: With dead ends: 8009 [2023-12-16 06:20:38,284 INFO L226 Difference]: Without dead ends: 7668 [2023-12-16 06:20:38,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-16 06:20:38,286 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 2276 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 3160 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 06:20:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7668 states. [2023-12-16 06:20:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7668 to 3613. [2023-12-16 06:20:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.3640642303433002) internal successors, (4927), 3612 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4927 transitions. [2023-12-16 06:20:38,337 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4927 transitions. Word has length 62 [2023-12-16 06:20:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 4927 transitions. [2023-12-16 06:20:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4927 transitions. [2023-12-16 06:20:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:38,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:38,339 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] [2023-12-16 06:20:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:20:38,340 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1838411058, now seen corresponding path program 1 times [2023-12-16 06:20:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773457836] [2023-12-16 06:20:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773457836] [2023-12-16 06:20:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773457836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 06:20:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158410069] [2023-12-16 06:20:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:38,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 06:20:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 06:20:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-16 06:20:38,720 INFO L87 Difference]: Start difference. First operand 3613 states and 4927 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:39,552 INFO L93 Difference]: Finished difference Result 7010 states and 9644 transitions. [2023-12-16 06:20:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 06:20:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:20:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:39,560 INFO L225 Difference]: With dead ends: 7010 [2023-12-16 06:20:39,561 INFO L226 Difference]: Without dead ends: 6628 [2023-12-16 06:20:39,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-16 06:20:39,563 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1838 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:39,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 2317 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 06:20:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2023-12-16 06:20:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 3513. [2023-12-16 06:20:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3512 states have (on average 1.3641799544419135) internal successors, (4791), 3512 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4791 transitions. [2023-12-16 06:20:39,608 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4791 transitions. Word has length 62 [2023-12-16 06:20:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:39,608 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4791 transitions. [2023-12-16 06:20:39,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4791 transitions. [2023-12-16 06:20:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:20:39,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:39,610 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] [2023-12-16 06:20:39,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:20:39,610 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:39,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:39,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1592976839, now seen corresponding path program 1 times [2023-12-16 06:20:39,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:39,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223401213] [2023-12-16 06:20:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:39,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223401213] [2023-12-16 06:20:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223401213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:39,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734517858] [2023-12-16 06:20:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:39,640 INFO L87 Difference]: Start difference. First operand 3513 states and 4791 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:39,684 INFO L93 Difference]: Finished difference Result 6608 states and 9066 transitions. [2023-12-16 06:20:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:39,685 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 [2023-12-16 06:20:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:39,688 INFO L225 Difference]: With dead ends: 6608 [2023-12-16 06:20:39,688 INFO L226 Difference]: Without dead ends: 4713 [2023-12-16 06:20:39,690 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 [2023-12-16 06:20:39,690 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 169 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:39,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 322 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4713 states. [2023-12-16 06:20:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4713 to 3296. [2023-12-16 06:20:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3295 states have (on average 1.3635811836115326) internal successors, (4493), 3295 states have internal predecessors, (4493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4493 transitions. [2023-12-16 06:20:39,721 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4493 transitions. Word has length 62 [2023-12-16 06:20:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:39,722 INFO L495 AbstractCegarLoop]: Abstraction has 3296 states and 4493 transitions. [2023-12-16 06:20:39,722 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) [2023-12-16 06:20:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4493 transitions. [2023-12-16 06:20:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 06:20:39,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:39,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:39,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:20:39,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:39,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1504815385, now seen corresponding path program 1 times [2023-12-16 06:20:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645488591] [2023-12-16 06:20:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645488591] [2023-12-16 06:20:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645488591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:39,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:39,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:20:39,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261571102] [2023-12-16 06:20:39,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:20:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:39,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:20:39,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:20:39,781 INFO L87 Difference]: Start difference. First operand 3296 states and 4493 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:39,826 INFO L93 Difference]: Finished difference Result 3302 states and 4496 transitions. [2023-12-16 06:20:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:20:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-16 06:20:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:39,828 INFO L225 Difference]: With dead ends: 3302 [2023-12-16 06:20:39,828 INFO L226 Difference]: Without dead ends: 2843 [2023-12-16 06:20:39,829 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 [2023-12-16 06:20:39,830 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 569 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:39,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 696 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2023-12-16 06:20:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2839. [2023-12-16 06:20:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2838 states have (on average 1.3653981677237492) internal successors, (3875), 2838 states have internal predecessors, (3875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3875 transitions. [2023-12-16 06:20:39,850 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3875 transitions. Word has length 66 [2023-12-16 06:20:39,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:39,850 INFO L495 AbstractCegarLoop]: Abstraction has 2839 states and 3875 transitions. [2023-12-16 06:20:39,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3875 transitions. [2023-12-16 06:20:39,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-16 06:20:39,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:39,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:39,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:20:39,853 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:39,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1123021877, now seen corresponding path program 1 times [2023-12-16 06:20:39,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:39,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554586336] [2023-12-16 06:20:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:39,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554586336] [2023-12-16 06:20:39,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554586336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:39,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:39,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532141324] [2023-12-16 06:20:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:39,912 INFO L87 Difference]: Start difference. First operand 2839 states and 3875 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:39,932 INFO L93 Difference]: Finished difference Result 7212 states and 9957 transitions. [2023-12-16 06:20:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:39,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-16 06:20:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:39,937 INFO L225 Difference]: With dead ends: 7212 [2023-12-16 06:20:39,937 INFO L226 Difference]: Without dead ends: 4923 [2023-12-16 06:20:39,939 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 [2023-12-16 06:20:39,940 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 118 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:39,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 435 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2023-12-16 06:20:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4579. [2023-12-16 06:20:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4578 states have (on average 1.370249017038008) internal successors, (6273), 4578 states have internal predecessors, (6273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6273 transitions. [2023-12-16 06:20:39,982 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6273 transitions. Word has length 69 [2023-12-16 06:20:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:39,983 INFO L495 AbstractCegarLoop]: Abstraction has 4579 states and 6273 transitions. [2023-12-16 06:20:39,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6273 transitions. [2023-12-16 06:20:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 06:20:39,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:39,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:20:39,985 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:39,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1728540681, now seen corresponding path program 1 times [2023-12-16 06:20:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970883124] [2023-12-16 06:20:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970883124] [2023-12-16 06:20:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970883124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:40,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:40,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:40,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237456543] [2023-12-16 06:20:40,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:40,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:40,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:40,037 INFO L87 Difference]: Start difference. First operand 4579 states and 6273 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:40,063 INFO L93 Difference]: Finished difference Result 12227 states and 16835 transitions. [2023-12-16 06:20:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:40,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-16 06:20:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:40,070 INFO L225 Difference]: With dead ends: 12227 [2023-12-16 06:20:40,070 INFO L226 Difference]: Without dead ends: 8198 [2023-12-16 06:20:40,075 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 [2023-12-16 06:20:40,075 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 107 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:40,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-12-16 06:20:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 7608. [2023-12-16 06:20:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7608 states, 7607 states have (on average 1.3688707769159985) internal successors, (10413), 7607 states have internal predecessors, (10413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7608 states to 7608 states and 10413 transitions. [2023-12-16 06:20:40,151 INFO L78 Accepts]: Start accepts. Automaton has 7608 states and 10413 transitions. Word has length 70 [2023-12-16 06:20:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:40,152 INFO L495 AbstractCegarLoop]: Abstraction has 7608 states and 10413 transitions. [2023-12-16 06:20:40,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7608 states and 10413 transitions. [2023-12-16 06:20:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 06:20:40,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:40,154 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] [2023-12-16 06:20:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 06:20:40,154 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:40,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash -644807243, now seen corresponding path program 1 times [2023-12-16 06:20:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880865546] [2023-12-16 06:20:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880865546] [2023-12-16 06:20:40,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880865546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:40,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:40,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:40,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785092905] [2023-12-16 06:20:40,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:40,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:40,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:40,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:40,206 INFO L87 Difference]: Start difference. First operand 7608 states and 10413 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:40,267 INFO L93 Difference]: Finished difference Result 20480 states and 27987 transitions. [2023-12-16 06:20:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:40,268 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 [2023-12-16 06:20:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:40,281 INFO L225 Difference]: With dead ends: 20480 [2023-12-16 06:20:40,281 INFO L226 Difference]: Without dead ends: 13327 [2023-12-16 06:20:40,288 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 [2023-12-16 06:20:40,289 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 112 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:40,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 427 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2023-12-16 06:20:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 12149. [2023-12-16 06:20:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12149 states, 12148 states have (on average 1.3538854132367468) internal successors, (16447), 12148 states have internal predecessors, (16447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12149 states to 12149 states and 16447 transitions. [2023-12-16 06:20:40,397 INFO L78 Accepts]: Start accepts. Automaton has 12149 states and 16447 transitions. Word has length 72 [2023-12-16 06:20:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:40,397 INFO L495 AbstractCegarLoop]: Abstraction has 12149 states and 16447 transitions. [2023-12-16 06:20:40,397 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) [2023-12-16 06:20:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12149 states and 16447 transitions. [2023-12-16 06:20:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 06:20:40,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:40,399 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] [2023-12-16 06:20:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 06:20:40,399 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:40,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1527500110, now seen corresponding path program 1 times [2023-12-16 06:20:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140107987] [2023-12-16 06:20:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:40,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140107987] [2023-12-16 06:20:40,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140107987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:40,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:40,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:20:40,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129754777] [2023-12-16 06:20:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:40,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:20:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:20:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:20:40,503 INFO L87 Difference]: Start difference. First operand 12149 states and 16447 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:40,590 INFO L93 Difference]: Finished difference Result 26093 states and 34733 transitions. [2023-12-16 06:20:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 06:20:40,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 06:20:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:40,622 INFO L225 Difference]: With dead ends: 26093 [2023-12-16 06:20:40,623 INFO L226 Difference]: Without dead ends: 26091 [2023-12-16 06:20:40,631 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 [2023-12-16 06:20:40,632 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 330 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:40,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 992 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26091 states. [2023-12-16 06:20:40,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26091 to 13421. [2023-12-16 06:20:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13420 states have (on average 1.3203427719821161) internal successors, (17719), 13420 states have internal predecessors, (17719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 17719 transitions. [2023-12-16 06:20:40,829 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 17719 transitions. Word has length 73 [2023-12-16 06:20:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:40,829 INFO L495 AbstractCegarLoop]: Abstraction has 13421 states and 17719 transitions. [2023-12-16 06:20:40,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 17719 transitions. [2023-12-16 06:20:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:20:40,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:40,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:40,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 06:20:40,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:40,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:40,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1583760693, now seen corresponding path program 1 times [2023-12-16 06:20:40,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795799008] [2023-12-16 06:20:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:40,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795799008] [2023-12-16 06:20:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795799008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:20:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:20:40,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:20:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407738254] [2023-12-16 06:20:40,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:20:40,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:20:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:20:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:20:40,859 INFO L87 Difference]: Start difference. First operand 13421 states and 17719 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:20:40,922 INFO L93 Difference]: Finished difference Result 32889 states and 43333 transitions. [2023-12-16 06:20:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:20:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:20:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:20:40,943 INFO L225 Difference]: With dead ends: 32889 [2023-12-16 06:20:40,943 INFO L226 Difference]: Without dead ends: 19923 [2023-12-16 06:20:40,954 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 [2023-12-16 06:20:40,954 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 132 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:20:40,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 314 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:20:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2023-12-16 06:20:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 19709. [2023-12-16 06:20:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19709 states, 19708 states have (on average 1.2938400649482444) internal successors, (25499), 19708 states have internal predecessors, (25499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19709 states to 19709 states and 25499 transitions. [2023-12-16 06:20:41,167 INFO L78 Accepts]: Start accepts. Automaton has 19709 states and 25499 transitions. Word has length 74 [2023-12-16 06:20:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:20:41,168 INFO L495 AbstractCegarLoop]: Abstraction has 19709 states and 25499 transitions. [2023-12-16 06:20:41,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:20:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 19709 states and 25499 transitions. [2023-12-16 06:20:41,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:20:41,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:20:41,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:20:41,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-16 06:20:41,173 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:20:41,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:20:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1684095917, now seen corresponding path program 1 times [2023-12-16 06:20:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:20:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378933635] [2023-12-16 06:20:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:20:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:20:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378933635] [2023-12-16 06:20:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378933635] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:20:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486240147] [2023-12-16 06:20:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:20:41,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:20:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:20:41,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:20:41,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:20:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:20:41,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:20:41,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:20:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:42,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:20:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:20:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486240147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:20:43,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:20:43,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-16 06:20:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696252684] [2023-12-16 06:20:43,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:20:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 06:20:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:20:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 06:20:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2023-12-16 06:20:43,007 INFO L87 Difference]: Start difference. First operand 19709 states and 25499 transitions. Second operand has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:21:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:21:06,584 INFO L93 Difference]: Finished difference Result 291629 states and 369212 transitions. [2023-12-16 06:21:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2023-12-16 06:21:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-16 06:21:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:21:07,110 INFO L225 Difference]: With dead ends: 291629 [2023-12-16 06:21:07,110 INFO L226 Difference]: Without dead ends: 280895 [2023-12-16 06:21:07,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45289 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=14951, Invalid=91651, Unknown=0, NotChecked=0, Total=106602 [2023-12-16 06:21:07,185 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 12009 mSDsluCounter, 9870 mSDsCounter, 0 mSdLazyCounter, 9448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12009 SdHoareTripleChecker+Valid, 10325 SdHoareTripleChecker+Invalid, 9573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 9448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:21:07,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12009 Valid, 10325 Invalid, 9573 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 9448 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-16 06:21:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280895 states. [2023-12-16 06:21:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280895 to 20285. [2023-12-16 06:21:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20285 states, 20284 states have (on average 1.292250049299941) internal successors, (26212), 20284 states have internal predecessors, (26212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:21:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20285 states to 20285 states and 26212 transitions. [2023-12-16 06:21:08,673 INFO L78 Accepts]: Start accepts. Automaton has 20285 states and 26212 transitions. Word has length 93 [2023-12-16 06:21:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:21:08,674 INFO L495 AbstractCegarLoop]: Abstraction has 20285 states and 26212 transitions. [2023-12-16 06:21:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.6875) internal successors, (246), 31 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:21:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 20285 states and 26212 transitions. [2023-12-16 06:21:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:21:08,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:21:08,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:21:08,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:21:08,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:21:08,900 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:21:08,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:21:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash -195123861, now seen corresponding path program 1 times [2023-12-16 06:21:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:21:08,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907361405] [2023-12-16 06:21:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:21:08,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:21:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:21:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:21:09,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:21:09,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907361405] [2023-12-16 06:21:09,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907361405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:21:09,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609314122] [2023-12-16 06:21:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:21:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:21:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:21:09,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:21:09,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:21:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:21:09,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 06:21:09,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:21:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:21:09,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:21:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:21:10,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609314122] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:21:10,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:21:10,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-16 06:21:10,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702353064] [2023-12-16 06:21:10,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:21:10,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 06:21:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:21:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 06:21:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-16 06:21:10,622 INFO L87 Difference]: Start difference. First operand 20285 states and 26212 transitions. Second operand has 32 states, 32 states have (on average 7.8125) internal successors, (250), 31 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 06:21:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-16 06:21:25,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26337 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=9928, Invalid=54334, Unknown=0, NotChecked=0, Total=64262 [2023-12-16 06:21:25,964 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 9106 mSDsluCounter, 5471 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9106 SdHoareTripleChecker+Valid, 5760 SdHoareTripleChecker+Invalid, 4995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 06:21:25,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9106 Valid, 5760 Invalid, 4995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 06:21:25,965 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:21:25,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 06:21:25,998 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 [2023-12-16 06:21:25,998 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:21:26,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-16 06:21:26,175 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (20285states) and FLOYD_HOARE automaton (currently 224 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (23080 states constructed, input type IntersectNwa). [2023-12-16 06:21:26,179 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] [2023-12-16 06:21:26,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:21:26,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:21:26 BoogieIcfgContainer [2023-12-16 06:21:26,183 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:21:26,184 INFO L158 Benchmark]: Toolchain (without parser) took 59576.18ms. Allocated memory was 220.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 168.9MB in the beginning and 938.7MB in the end (delta: -769.8MB). Peak memory consumption was 447.8MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,184 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 220.2MB. Free memory was 171.5MB in the beginning and 171.3MB in the end (delta: 171.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:21:26,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.35ms. Allocated memory is still 220.2MB. Free memory was 168.5MB in the beginning and 148.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.89ms. Allocated memory is still 220.2MB. Free memory was 148.1MB in the beginning and 144.4MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,189 INFO L158 Benchmark]: Boogie Preprocessor took 42.82ms. Allocated memory is still 220.2MB. Free memory was 144.4MB in the beginning and 140.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,190 INFO L158 Benchmark]: RCFGBuilder took 718.75ms. Allocated memory was 220.2MB in the beginning and 332.4MB in the end (delta: 112.2MB). Free memory was 140.6MB in the beginning and 274.0MB in the end (delta: -133.5MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,193 INFO L158 Benchmark]: TraceAbstraction took 58443.36ms. Allocated memory was 332.4MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 273.5MB in the beginning and 938.7MB in the end (delta: -665.2MB). Peak memory consumption was 439.0MB. Max. memory is 8.0GB. [2023-12-16 06:21:26,193 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 220.2MB. Free memory was 171.5MB in the beginning and 171.3MB in the end (delta: 171.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.35ms. Allocated memory is still 220.2MB. Free memory was 168.5MB in the beginning and 148.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.89ms. Allocated memory is still 220.2MB. Free memory was 148.1MB in the beginning and 144.4MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.82ms. Allocated memory is still 220.2MB. Free memory was 144.4MB in the beginning and 140.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 718.75ms. Allocated memory was 220.2MB in the beginning and 332.4MB in the end (delta: 112.2MB). Free memory was 140.6MB in the beginning and 274.0MB in the end (delta: -133.5MB). Peak memory consumption was 23.5MB. Max. memory is 8.0GB. * TraceAbstraction took 58443.36ms. Allocated memory was 332.4MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 273.5MB in the beginning and 938.7MB in the end (delta: -665.2MB). Peak memory consumption was 439.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 391]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 391). Cancelled while NwaCegarLoop was constructing difference of abstraction (20285states) and FLOYD_HOARE automaton (currently 224 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (23080 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 159 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.4s, OverallIterations: 31, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 46.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45598 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45598 mSDsluCounter, 38385 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29920 mSDsCounter, 476 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20232 IncrementalHoareTripleChecker+Invalid, 20708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 476 mSolverCounterUnsat, 8465 mSDtfsCounter, 20232 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1169 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 795 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72201 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20285occurred in iteration=30, InterpolantAutomatonStates: 509, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 30 MinimizatonAttempts, 375631 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 2107 NumberOfCodeBlocks, 2107 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2258 ConstructedInterpolants, 0 QuantifiedInterpolants, 15259 SizeOfPredicates, 20 NumberOfNonLiveVariables, 762 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 35 InterpolantComputations, 29 PerfectInterpolantSequences, 42/60 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