/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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:24:30,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:24:30,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:24:30,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:24:30,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:24:30,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:24:30,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:24:30,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:24:30,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:24:30,634 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:24:30,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:24:30,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:24:30,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:24:30,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:24:30,635 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:24:30,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:24:30,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:24:30,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:24:30,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:24:30,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:24:30,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:24:30,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:24:30,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:24:30,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:24:30,638 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:24:30,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:24:30,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:24:30,639 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:24:30,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:24:30,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:24:30,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:24:30,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:24:30,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:24:30,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:24:30,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:24:30,641 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:24:30,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:24:30,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:24:30,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:24:30,832 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:24:30,833 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:24:30,833 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:24:31,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:24:32,133 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:24:32,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:24:32,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbf45990/55cae68b725d459d8ab6fa4a7984fb93/FLAG6f59b8a9c [2023-12-21 14:24:32,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cbf45990/55cae68b725d459d8ab6fa4a7984fb93 [2023-12-21 14:24:32,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:24:32,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:24:32,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:24:32,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:24:32,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:24:32,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e299e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32, skipping insertion in model container [2023-12-21 14:24:32,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:24:32,428 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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15864,15877] [2023-12-21 14:24:32,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:24:32,489 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:24:32,555 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_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15864,15877] [2023-12-21 14:24:32,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:24:32,621 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:24:32,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32 WrapperNode [2023-12-21 14:24:32,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:24:32,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:24:32,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:24:32,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:24:32,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,687 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1364 [2023-12-21 14:24:32,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:24:32,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:24:32,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:24:32,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:24:32,703 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,767 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 14:24:32,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:24:32,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:24:32,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:24:32,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:24:32,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (1/1) ... [2023-12-21 14:24:32,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:24:32,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:24:32,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 14:24:32,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 14:24:32,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:24:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:24:32,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:24:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:24:33,040 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:24:33,041 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:24:33,806 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:24:33,831 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:24:33,831 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:24:33,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:24:33 BoogieIcfgContainer [2023-12-21 14:24:33,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:24:33,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:24:33,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:24:33,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:24:33,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:24:32" (1/3) ... [2023-12-21 14:24:33,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bab57c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:24:33, skipping insertion in model container [2023-12-21 14:24:33,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:32" (2/3) ... [2023-12-21 14:24:33,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bab57c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:24:33, skipping insertion in model container [2023-12-21 14:24:33,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:24:33" (3/3) ... [2023-12-21 14:24:33,837 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:24:33,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:24:33,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:24:33,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:24:33,888 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;@531850cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:24:33,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:24:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 340 states have (on average 1.7735294117647058) internal successors, (603), 341 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:24:33,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:33,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:33,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:33,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash -2070507114, now seen corresponding path program 1 times [2023-12-21 14:24:33,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:33,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627391307] [2023-12-21 14:24:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627391307] [2023-12-21 14:24:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627391307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:34,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:34,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:34,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537209857] [2023-12-21 14:24:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:34,325 INFO L87 Difference]: Start difference. First operand has 342 states, 340 states have (on average 1.7735294117647058) internal successors, (603), 341 states have internal predecessors, (603), 0 states have call successors, (0), 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 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:34,423 INFO L93 Difference]: Finished difference Result 698 states and 1216 transitions. [2023-12-21 14:24:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:34,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-12-21 14:24:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:34,441 INFO L225 Difference]: With dead ends: 698 [2023-12-21 14:24:34,441 INFO L226 Difference]: Without dead ends: 564 [2023-12-21 14:24:34,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:34,447 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 417 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:34,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 999 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-21 14:24:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 562. [2023-12-21 14:24:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.499108734402852) internal successors, (841), 561 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 841 transitions. [2023-12-21 14:24:34,500 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 841 transitions. Word has length 154 [2023-12-21 14:24:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:34,500 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 841 transitions. [2023-12-21 14:24:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 841 transitions. [2023-12-21 14:24:34,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:24:34,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:34,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:24:34,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1178225863, now seen corresponding path program 1 times [2023-12-21 14:24:34,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:34,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885182590] [2023-12-21 14:24:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:34,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:34,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885182590] [2023-12-21 14:24:34,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885182590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:34,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:34,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926822928] [2023-12-21 14:24:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:34,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:34,965 INFO L87 Difference]: Start difference. First operand 562 states and 841 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:35,030 INFO L93 Difference]: Finished difference Result 1642 states and 2448 transitions. [2023-12-21 14:24:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:35,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-12-21 14:24:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:35,035 INFO L225 Difference]: With dead ends: 1642 [2023-12-21 14:24:35,035 INFO L226 Difference]: Without dead ends: 1088 [2023-12-21 14:24:35,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:35,039 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1089 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:35,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1236 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-12-21 14:24:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1086. [2023-12-21 14:24:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.48110599078341) internal successors, (1607), 1085 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1607 transitions. [2023-12-21 14:24:35,079 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1607 transitions. Word has length 154 [2023-12-21 14:24:35,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:35,080 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1607 transitions. [2023-12-21 14:24:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1607 transitions. [2023-12-21 14:24:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:24:35,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:35,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:35,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:24:35,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:35,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash 836221869, now seen corresponding path program 1 times [2023-12-21 14:24:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996343624] [2023-12-21 14:24:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996343624] [2023-12-21 14:24:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996343624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:35,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:35,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:35,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333316236] [2023-12-21 14:24:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:35,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:35,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,160 INFO L87 Difference]: Start difference. First operand 1086 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:35,186 INFO L93 Difference]: Finished difference Result 3222 states and 4761 transitions. [2023-12-21 14:24:35,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:35,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-21 14:24:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:35,192 INFO L225 Difference]: With dead ends: 3222 [2023-12-21 14:24:35,193 INFO L226 Difference]: Without dead ends: 2163 [2023-12-21 14:24:35,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,198 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 492 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:35,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1190 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-12-21 14:24:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1088. [2023-12-21 14:24:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.4802207911683534) internal successors, (1609), 1087 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1609 transitions. [2023-12-21 14:24:35,225 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1609 transitions. Word has length 155 [2023-12-21 14:24:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:35,228 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1609 transitions. [2023-12-21 14:24:35,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1609 transitions. [2023-12-21 14:24:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:24:35,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:35,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:35,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:24:35,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:35,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1170517208, now seen corresponding path program 1 times [2023-12-21 14:24:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914876139] [2023-12-21 14:24:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914876139] [2023-12-21 14:24:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914876139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:35,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739585412] [2023-12-21 14:24:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:35,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:35,486 INFO L87 Difference]: Start difference. First operand 1088 states and 1609 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:35,543 INFO L93 Difference]: Finished difference Result 3148 states and 4633 transitions. [2023-12-21 14:24:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-21 14:24:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:35,550 INFO L225 Difference]: With dead ends: 3148 [2023-12-21 14:24:35,550 INFO L226 Difference]: Without dead ends: 2089 [2023-12-21 14:24:35,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:35,556 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1043 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:35,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1247 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2023-12-21 14:24:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 2087. [2023-12-21 14:24:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2086 states have (on average 1.4606903163950145) internal successors, (3047), 2086 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 3047 transitions. [2023-12-21 14:24:35,596 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 3047 transitions. Word has length 156 [2023-12-21 14:24:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:35,597 INFO L495 AbstractCegarLoop]: Abstraction has 2087 states and 3047 transitions. [2023-12-21 14:24:35,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 3047 transitions. [2023-12-21 14:24:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 14:24:35,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:35,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:35,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:24:35,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:35,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:35,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1273858068, now seen corresponding path program 1 times [2023-12-21 14:24:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:35,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840769945] [2023-12-21 14:24:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:35,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:35,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840769945] [2023-12-21 14:24:35,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840769945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:35,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:35,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46582801] [2023-12-21 14:24:35,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:35,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:35,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:35,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,664 INFO L87 Difference]: Start difference. First operand 2087 states and 3047 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:35,694 INFO L93 Difference]: Finished difference Result 6187 states and 9023 transitions. [2023-12-21 14:24:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:35,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-21 14:24:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:35,706 INFO L225 Difference]: With dead ends: 6187 [2023-12-21 14:24:35,706 INFO L226 Difference]: Without dead ends: 4143 [2023-12-21 14:24:35,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,710 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 478 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:35,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1469 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-12-21 14:24:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 2091. [2023-12-21 14:24:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4598086124401914) internal successors, (3051), 2090 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3051 transitions. [2023-12-21 14:24:35,767 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3051 transitions. Word has length 157 [2023-12-21 14:24:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:35,767 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3051 transitions. [2023-12-21 14:24:35,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3051 transitions. [2023-12-21 14:24:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 14:24:35,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:35,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:35,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:24:35,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1948549243, now seen corresponding path program 1 times [2023-12-21 14:24:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:35,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991878294] [2023-12-21 14:24:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:35,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991878294] [2023-12-21 14:24:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991878294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049402350] [2023-12-21 14:24:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:35,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,845 INFO L87 Difference]: Start difference. First operand 2091 states and 3051 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:35,886 INFO L93 Difference]: Finished difference Result 5410 states and 7900 transitions. [2023-12-21 14:24:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:35,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2023-12-21 14:24:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:35,896 INFO L225 Difference]: With dead ends: 5410 [2023-12-21 14:24:35,896 INFO L226 Difference]: Without dead ends: 3650 [2023-12-21 14:24:35,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:35,900 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 419 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:35,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1394 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2023-12-21 14:24:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3648. [2023-12-21 14:24:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 1.4373457636413491) internal successors, (5242), 3647 states have internal predecessors, (5242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5242 transitions. [2023-12-21 14:24:35,963 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5242 transitions. Word has length 158 [2023-12-21 14:24:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:35,963 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 5242 transitions. [2023-12-21 14:24:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5242 transitions. [2023-12-21 14:24:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 14:24:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:35,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:35,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:24:35,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:35,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1767624450, now seen corresponding path program 1 times [2023-12-21 14:24:35,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:35,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005652444] [2023-12-21 14:24:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:35,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:36,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005652444] [2023-12-21 14:24:36,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005652444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:36,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345495419] [2023-12-21 14:24:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:36,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:36,205 INFO L87 Difference]: Start difference. First operand 3648 states and 5242 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:36,282 INFO L93 Difference]: Finished difference Result 10380 states and 14905 transitions. [2023-12-21 14:24:36,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:36,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2023-12-21 14:24:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:36,299 INFO L225 Difference]: With dead ends: 10380 [2023-12-21 14:24:36,299 INFO L226 Difference]: Without dead ends: 6768 [2023-12-21 14:24:36,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:36,306 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 1504 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:36,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1249 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2023-12-21 14:24:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6766. [2023-12-21 14:24:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 6765 states have (on average 1.4239467849223946) internal successors, (9633), 6765 states have internal predecessors, (9633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 9633 transitions. [2023-12-21 14:24:36,449 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 9633 transitions. Word has length 158 [2023-12-21 14:24:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:36,449 INFO L495 AbstractCegarLoop]: Abstraction has 6766 states and 9633 transitions. [2023-12-21 14:24:36,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 9633 transitions. [2023-12-21 14:24:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 14:24:36,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:36,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:36,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:24:36,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:36,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -74628617, now seen corresponding path program 1 times [2023-12-21 14:24:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892037299] [2023-12-21 14:24:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892037299] [2023-12-21 14:24:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892037299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:36,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173082809] [2023-12-21 14:24:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:36,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:36,695 INFO L87 Difference]: Start difference. First operand 6766 states and 9633 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:36,776 INFO L93 Difference]: Finished difference Result 13795 states and 19549 transitions. [2023-12-21 14:24:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2023-12-21 14:24:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:36,805 INFO L225 Difference]: With dead ends: 13795 [2023-12-21 14:24:36,805 INFO L226 Difference]: Without dead ends: 7145 [2023-12-21 14:24:36,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:36,815 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 987 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:36,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1274 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2023-12-21 14:24:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 6990. [2023-12-21 14:24:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 1.4143654313921876) internal successors, (9885), 6989 states have internal predecessors, (9885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 9885 transitions. [2023-12-21 14:24:36,917 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 9885 transitions. Word has length 158 [2023-12-21 14:24:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:36,917 INFO L495 AbstractCegarLoop]: Abstraction has 6990 states and 9885 transitions. [2023-12-21 14:24:36,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 9885 transitions. [2023-12-21 14:24:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 14:24:36,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:36,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:24:36,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:36,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2126346155, now seen corresponding path program 1 times [2023-12-21 14:24:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795655170] [2023-12-21 14:24:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:36,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:36,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795655170] [2023-12-21 14:24:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795655170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:36,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024714775] [2023-12-21 14:24:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:36,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:36,975 INFO L87 Difference]: Start difference. First operand 6990 states and 9885 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:37,031 INFO L93 Difference]: Finished difference Result 20246 states and 28723 transitions. [2023-12-21 14:24:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2023-12-21 14:24:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:37,054 INFO L225 Difference]: With dead ends: 20246 [2023-12-21 14:24:37,054 INFO L226 Difference]: Without dead ends: 13856 [2023-12-21 14:24:37,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:37,066 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 464 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:37,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1115 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13856 states. [2023-12-21 14:24:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13856 to 7006. [2023-12-21 14:24:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7005 states have (on average 1.4134189864382585) internal successors, (9901), 7005 states have internal predecessors, (9901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 9901 transitions. [2023-12-21 14:24:37,283 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 9901 transitions. Word has length 159 [2023-12-21 14:24:37,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:37,283 INFO L495 AbstractCegarLoop]: Abstraction has 7006 states and 9901 transitions. [2023-12-21 14:24:37,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 9901 transitions. [2023-12-21 14:24:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 14:24:37,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:37,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:24:37,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:37,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash 775172758, now seen corresponding path program 1 times [2023-12-21 14:24:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478861577] [2023-12-21 14:24:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:37,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478861577] [2023-12-21 14:24:37,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478861577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:37,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:37,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78670051] [2023-12-21 14:24:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:37,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:37,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:37,505 INFO L87 Difference]: Start difference. First operand 7006 states and 9901 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:37,556 INFO L93 Difference]: Finished difference Result 14003 states and 19789 transitions. [2023-12-21 14:24:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2023-12-21 14:24:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:37,567 INFO L225 Difference]: With dead ends: 14003 [2023-12-21 14:24:37,567 INFO L226 Difference]: Without dead ends: 7004 [2023-12-21 14:24:37,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:37,575 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 65 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:37,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1538 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7004 states. [2023-12-21 14:24:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7004 to 7004. [2023-12-21 14:24:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7004 states, 7003 states have (on average 1.4132514636584321) internal successors, (9897), 7003 states have internal predecessors, (9897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 9897 transitions. [2023-12-21 14:24:37,672 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 9897 transitions. Word has length 160 [2023-12-21 14:24:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:37,673 INFO L495 AbstractCegarLoop]: Abstraction has 7004 states and 9897 transitions. [2023-12-21 14:24:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 9897 transitions. [2023-12-21 14:24:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 14:24:37,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:37,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:37,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:24:37,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:37,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -437704002, now seen corresponding path program 1 times [2023-12-21 14:24:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905018550] [2023-12-21 14:24:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:37,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:37,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905018550] [2023-12-21 14:24:37,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905018550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:37,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:37,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:37,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288046313] [2023-12-21 14:24:37,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:37,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:37,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:37,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:37,783 INFO L87 Difference]: Start difference. First operand 7004 states and 9897 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:37,857 INFO L93 Difference]: Finished difference Result 16188 states and 22981 transitions. [2023-12-21 14:24:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2023-12-21 14:24:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:37,871 INFO L225 Difference]: With dead ends: 16188 [2023-12-21 14:24:37,872 INFO L226 Difference]: Without dead ends: 10394 [2023-12-21 14:24:37,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:37,880 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 424 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:37,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1392 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10394 states. [2023-12-21 14:24:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10394 to 10392. [2023-12-21 14:24:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10392 states, 10391 states have (on average 1.3914926378596864) internal successors, (14459), 10391 states have internal predecessors, (14459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10392 states to 10392 states and 14459 transitions. [2023-12-21 14:24:38,056 INFO L78 Accepts]: Start accepts. Automaton has 10392 states and 14459 transitions. Word has length 160 [2023-12-21 14:24:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:38,056 INFO L495 AbstractCegarLoop]: Abstraction has 10392 states and 14459 transitions. [2023-12-21 14:24:38,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10392 states and 14459 transitions. [2023-12-21 14:24:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:24:38,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:38,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:24:38,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:38,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1175474105, now seen corresponding path program 1 times [2023-12-21 14:24:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144938380] [2023-12-21 14:24:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144938380] [2023-12-21 14:24:38,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144938380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045484569] [2023-12-21 14:24:38,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:38,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,127 INFO L87 Difference]: Start difference. First operand 10392 states and 14459 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:38,202 INFO L93 Difference]: Finished difference Result 24302 states and 34627 transitions. [2023-12-21 14:24:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:38,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2023-12-21 14:24:38,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:38,223 INFO L225 Difference]: With dead ends: 24302 [2023-12-21 14:24:38,223 INFO L226 Difference]: Without dead ends: 15107 [2023-12-21 14:24:38,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,236 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 315 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:38,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1073 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15107 states. [2023-12-21 14:24:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15107 to 13180. [2023-12-21 14:24:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13180 states, 13179 states have (on average 1.4350861218605357) internal successors, (18913), 13179 states have internal predecessors, (18913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13180 states to 13180 states and 18913 transitions. [2023-12-21 14:24:38,423 INFO L78 Accepts]: Start accepts. Automaton has 13180 states and 18913 transitions. Word has length 162 [2023-12-21 14:24:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:38,423 INFO L495 AbstractCegarLoop]: Abstraction has 13180 states and 18913 transitions. [2023-12-21 14:24:38,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states and 18913 transitions. [2023-12-21 14:24:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 14:24:38,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:38,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:38,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:24:38,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash 240281001, now seen corresponding path program 1 times [2023-12-21 14:24:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638977749] [2023-12-21 14:24:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638977749] [2023-12-21 14:24:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638977749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:38,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441126904] [2023-12-21 14:24:38,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:38,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,488 INFO L87 Difference]: Start difference. First operand 13180 states and 18913 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:38,598 INFO L93 Difference]: Finished difference Result 29138 states and 42713 transitions. [2023-12-21 14:24:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2023-12-21 14:24:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:38,626 INFO L225 Difference]: With dead ends: 29138 [2023-12-21 14:24:38,626 INFO L226 Difference]: Without dead ends: 19242 [2023-12-21 14:24:38,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,641 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 310 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:38,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1033 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19242 states. [2023-12-21 14:24:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19242 to 17436. [2023-12-21 14:24:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17436 states, 17435 states have (on average 1.4710065959277316) internal successors, (25647), 17435 states have internal predecessors, (25647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17436 states to 17436 states and 25647 transitions. [2023-12-21 14:24:38,879 INFO L78 Accepts]: Start accepts. Automaton has 17436 states and 25647 transitions. Word has length 164 [2023-12-21 14:24:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:38,880 INFO L495 AbstractCegarLoop]: Abstraction has 17436 states and 25647 transitions. [2023-12-21 14:24:38,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 17436 states and 25647 transitions. [2023-12-21 14:24:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 14:24:38,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:38,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:38,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:24:38,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:38,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2037294893, now seen corresponding path program 1 times [2023-12-21 14:24:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:38,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595755391] [2023-12-21 14:24:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595755391] [2023-12-21 14:24:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595755391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380184181] [2023-12-21 14:24:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:38,984 INFO L87 Difference]: Start difference. First operand 17436 states and 25647 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:39,179 INFO L93 Difference]: Finished difference Result 33723 states and 49985 transitions. [2023-12-21 14:24:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:24:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-21 14:24:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,207 INFO L225 Difference]: With dead ends: 33723 [2023-12-21 14:24:39,207 INFO L226 Difference]: Without dead ends: 17436 [2023-12-21 14:24:39,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:24:39,223 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1312 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:39,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 478 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17436 states. [2023-12-21 14:24:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17436 to 17436. [2023-12-21 14:24:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17436 states, 17435 states have (on average 1.4573558933180384) internal successors, (25409), 17435 states have internal predecessors, (25409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17436 states to 17436 states and 25409 transitions. [2023-12-21 14:24:39,515 INFO L78 Accepts]: Start accepts. Automaton has 17436 states and 25409 transitions. Word has length 165 [2023-12-21 14:24:39,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:39,516 INFO L495 AbstractCegarLoop]: Abstraction has 17436 states and 25409 transitions. [2023-12-21 14:24:39,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,516 INFO L276 IsEmpty]: Start isEmpty. Operand 17436 states and 25409 transitions. [2023-12-21 14:24:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 14:24:39,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:39,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:24:39,527 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:39,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1506766674, now seen corresponding path program 1 times [2023-12-21 14:24:39,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842461158] [2023-12-21 14:24:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:39,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:39,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842461158] [2023-12-21 14:24:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842461158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:39,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:39,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195313747] [2023-12-21 14:24:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:39,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:39,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:39,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:39,780 INFO L87 Difference]: Start difference. First operand 17436 states and 25409 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:39,944 INFO L93 Difference]: Finished difference Result 43678 states and 65709 transitions. [2023-12-21 14:24:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:39,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-21 14:24:39,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,996 INFO L225 Difference]: With dead ends: 43678 [2023-12-21 14:24:39,996 INFO L226 Difference]: Without dead ends: 32387 [2023-12-21 14:24:40,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:40,017 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 628 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:40,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 963 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32387 states. [2023-12-21 14:24:40,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32387 to 32385. [2023-12-21 14:24:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32385 states, 32384 states have (on average 1.472270256916996) internal successors, (47678), 32384 states have internal predecessors, (47678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32385 states to 32385 states and 47678 transitions. [2023-12-21 14:24:40,584 INFO L78 Accepts]: Start accepts. Automaton has 32385 states and 47678 transitions. Word has length 165 [2023-12-21 14:24:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:40,584 INFO L495 AbstractCegarLoop]: Abstraction has 32385 states and 47678 transitions. [2023-12-21 14:24:40,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32385 states and 47678 transitions. [2023-12-21 14:24:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 14:24:40,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:40,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:24:40,600 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:40,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1085378914, now seen corresponding path program 1 times [2023-12-21 14:24:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:40,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422322234] [2023-12-21 14:24:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422322234] [2023-12-21 14:24:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422322234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:40,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:40,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:40,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260956833] [2023-12-21 14:24:40,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:40,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:40,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:40,796 INFO L87 Difference]: Start difference. First operand 32385 states and 47678 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:41,279 INFO L93 Difference]: Finished difference Result 83810 states and 123598 transitions. [2023-12-21 14:24:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-21 14:24:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:41,389 INFO L225 Difference]: With dead ends: 83810 [2023-12-21 14:24:41,389 INFO L226 Difference]: Without dead ends: 51772 [2023-12-21 14:24:41,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:41,411 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 971 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:41,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1274 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51772 states. [2023-12-21 14:24:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51772 to 51770. [2023-12-21 14:24:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51770 states, 51769 states have (on average 1.4583437964805193) internal successors, (75497), 51769 states have internal predecessors, (75497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51770 states to 51770 states and 75497 transitions. [2023-12-21 14:24:42,394 INFO L78 Accepts]: Start accepts. Automaton has 51770 states and 75497 transitions. Word has length 165 [2023-12-21 14:24:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:42,395 INFO L495 AbstractCegarLoop]: Abstraction has 51770 states and 75497 transitions. [2023-12-21 14:24:42,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 51770 states and 75497 transitions. [2023-12-21 14:24:42,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 14:24:42,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:42,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:24:42,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:42,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1060593466, now seen corresponding path program 1 times [2023-12-21 14:24:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:42,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620641925] [2023-12-21 14:24:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620641925] [2023-12-21 14:24:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620641925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:42,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883847607] [2023-12-21 14:24:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:42,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:42,690 INFO L87 Difference]: Start difference. First operand 51770 states and 75497 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:42,885 INFO L93 Difference]: Finished difference Result 82456 states and 120203 transitions. [2023-12-21 14:24:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-21 14:24:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:42,950 INFO L225 Difference]: With dead ends: 82456 [2023-12-21 14:24:42,950 INFO L226 Difference]: Without dead ends: 42354 [2023-12-21 14:24:42,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:42,987 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 53 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:42,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1492 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42354 states. [2023-12-21 14:24:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42354 to 42354. [2023-12-21 14:24:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42354 states, 42353 states have (on average 1.4537340920359834) internal successors, (61570), 42353 states have internal predecessors, (61570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42354 states to 42354 states and 61570 transitions. [2023-12-21 14:24:43,774 INFO L78 Accepts]: Start accepts. Automaton has 42354 states and 61570 transitions. Word has length 167 [2023-12-21 14:24:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:43,774 INFO L495 AbstractCegarLoop]: Abstraction has 42354 states and 61570 transitions. [2023-12-21 14:24:43,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 42354 states and 61570 transitions. [2023-12-21 14:24:43,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 14:24:43,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:43,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:43,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:24:43,791 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:43,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1553330368, now seen corresponding path program 1 times [2023-12-21 14:24:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478849785] [2023-12-21 14:24:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478849785] [2023-12-21 14:24:43,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478849785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:43,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:43,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751785777] [2023-12-21 14:24:43,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:43,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:43,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:43,856 INFO L87 Difference]: Start difference. First operand 42354 states and 61570 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:44,288 INFO L93 Difference]: Finished difference Result 101037 states and 148809 transitions. [2023-12-21 14:24:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-21 14:24:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:44,411 INFO L225 Difference]: With dead ends: 101037 [2023-12-21 14:24:44,412 INFO L226 Difference]: Without dead ends: 66400 [2023-12-21 14:24:44,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:44,447 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 301 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:44,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1032 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66400 states. [2023-12-21 14:24:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66400 to 60490. [2023-12-21 14:24:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60490 states, 60489 states have (on average 1.4835424622658666) internal successors, (89738), 60489 states have internal predecessors, (89738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60490 states to 60490 states and 89738 transitions. [2023-12-21 14:24:45,506 INFO L78 Accepts]: Start accepts. Automaton has 60490 states and 89738 transitions. Word has length 171 [2023-12-21 14:24:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:45,507 INFO L495 AbstractCegarLoop]: Abstraction has 60490 states and 89738 transitions. [2023-12-21 14:24:45,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 60490 states and 89738 transitions. [2023-12-21 14:24:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:24:45,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:45,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:45,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:24:45,528 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:45,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1615415747, now seen corresponding path program 1 times [2023-12-21 14:24:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933934837] [2023-12-21 14:24:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:45,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933934837] [2023-12-21 14:24:45,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933934837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545818365] [2023-12-21 14:24:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:45,744 INFO L87 Difference]: Start difference. First operand 60490 states and 89738 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:46,161 INFO L93 Difference]: Finished difference Result 109367 states and 162427 transitions. [2023-12-21 14:24:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-12-21 14:24:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:46,221 INFO L225 Difference]: With dead ends: 109367 [2023-12-21 14:24:46,221 INFO L226 Difference]: Without dead ends: 48946 [2023-12-21 14:24:46,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:46,268 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 43 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:46,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1470 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:46,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48946 states. [2023-12-21 14:24:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48946 to 48946. [2023-12-21 14:24:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48946 states, 48945 states have (on average 1.4868525896414342) internal successors, (72774), 48945 states have internal predecessors, (72774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48946 states to 48946 states and 72774 transitions. [2023-12-21 14:24:47,027 INFO L78 Accepts]: Start accepts. Automaton has 48946 states and 72774 transitions. Word has length 172 [2023-12-21 14:24:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:47,027 INFO L495 AbstractCegarLoop]: Abstraction has 48946 states and 72774 transitions. [2023-12-21 14:24:47,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 48946 states and 72774 transitions. [2023-12-21 14:24:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 14:24:47,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:47,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:24:47,038 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:47,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -37438710, now seen corresponding path program 1 times [2023-12-21 14:24:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081372091] [2023-12-21 14:24:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:47,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:47,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081372091] [2023-12-21 14:24:47,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081372091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:47,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:47,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562124608] [2023-12-21 14:24:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:47,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:47,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:47,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:47,337 INFO L87 Difference]: Start difference. First operand 48946 states and 72774 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:47,625 INFO L93 Difference]: Finished difference Result 90450 states and 136295 transitions. [2023-12-21 14:24:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-21 14:24:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:47,736 INFO L225 Difference]: With dead ends: 90450 [2023-12-21 14:24:47,736 INFO L226 Difference]: Without dead ends: 68812 [2023-12-21 14:24:47,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:47,774 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 416 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:47,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1859 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68812 states. [2023-12-21 14:24:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68812 to 48894. [2023-12-21 14:24:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48894 states, 48893 states have (on average 1.4858568711267461) internal successors, (72648), 48893 states have internal predecessors, (72648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48894 states to 48894 states and 72648 transitions. [2023-12-21 14:24:48,710 INFO L78 Accepts]: Start accepts. Automaton has 48894 states and 72648 transitions. Word has length 179 [2023-12-21 14:24:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:48,711 INFO L495 AbstractCegarLoop]: Abstraction has 48894 states and 72648 transitions. [2023-12-21 14:24:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 48894 states and 72648 transitions. [2023-12-21 14:24:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 14:24:48,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:48,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:24:48,864 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:48,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:48,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1502050143, now seen corresponding path program 1 times [2023-12-21 14:24:48,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:48,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120015436] [2023-12-21 14:24:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120015436] [2023-12-21 14:24:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120015436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078628342] [2023-12-21 14:24:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:49,047 INFO L87 Difference]: Start difference. First operand 48894 states and 72648 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:49,233 INFO L93 Difference]: Finished difference Result 85609 states and 127106 transitions. [2023-12-21 14:24:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:49,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-21 14:24:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:49,301 INFO L225 Difference]: With dead ends: 85609 [2023-12-21 14:24:49,301 INFO L226 Difference]: Without dead ends: 48884 [2023-12-21 14:24:49,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:49,334 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 23 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:49,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1452 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48884 states. [2023-12-21 14:24:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48884 to 48884. [2023-12-21 14:24:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48884 states, 48883 states have (on average 1.4858539778655155) internal successors, (72633), 48883 states have internal predecessors, (72633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48884 states to 48884 states and 72633 transitions. [2023-12-21 14:24:50,179 INFO L78 Accepts]: Start accepts. Automaton has 48884 states and 72633 transitions. Word has length 179 [2023-12-21 14:24:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:50,180 INFO L495 AbstractCegarLoop]: Abstraction has 48884 states and 72633 transitions. [2023-12-21 14:24:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 48884 states and 72633 transitions. [2023-12-21 14:24:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 14:24:50,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:50,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:24:50,190 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:50,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:50,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2043283841, now seen corresponding path program 1 times [2023-12-21 14:24:50,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:50,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142271200] [2023-12-21 14:24:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142271200] [2023-12-21 14:24:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142271200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:50,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:50,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112555285] [2023-12-21 14:24:50,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:50,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:50,353 INFO L87 Difference]: Start difference. First operand 48884 states and 72633 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:50,800 INFO L93 Difference]: Finished difference Result 93418 states and 138859 transitions. [2023-12-21 14:24:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:50,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-21 14:24:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:50,855 INFO L225 Difference]: With dead ends: 93418 [2023-12-21 14:24:50,855 INFO L226 Difference]: Without dead ends: 44796 [2023-12-21 14:24:50,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:50,883 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1429 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:50,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 1189 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:24:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44796 states. [2023-12-21 14:24:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44796 to 44639. [2023-12-21 14:24:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44639 states, 44638 states have (on average 1.4859088668847171) internal successors, (66328), 44638 states have internal predecessors, (66328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44639 states to 44639 states and 66328 transitions. [2023-12-21 14:24:51,448 INFO L78 Accepts]: Start accepts. Automaton has 44639 states and 66328 transitions. Word has length 179 [2023-12-21 14:24:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:51,449 INFO L495 AbstractCegarLoop]: Abstraction has 44639 states and 66328 transitions. [2023-12-21 14:24:51,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44639 states and 66328 transitions. [2023-12-21 14:24:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:24:51,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:51,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:51,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:24:51,457 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:51,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:51,458 INFO L85 PathProgramCache]: Analyzing trace with hash -806192530, now seen corresponding path program 1 times [2023-12-21 14:24:51,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:51,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115824589] [2023-12-21 14:24:51,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:51,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:51,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115824589] [2023-12-21 14:24:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115824589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:51,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605881372] [2023-12-21 14:24:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:51,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:51,723 INFO L87 Difference]: Start difference. First operand 44639 states and 66328 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:52,013 INFO L93 Difference]: Finished difference Result 88049 states and 131271 transitions. [2023-12-21 14:24:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:24:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:24:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:52,071 INFO L225 Difference]: With dead ends: 88049 [2023-12-21 14:24:52,072 INFO L226 Difference]: Without dead ends: 44639 [2023-12-21 14:24:52,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:24:52,109 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1254 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:52,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 450 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44639 states. [2023-12-21 14:24:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44639 to 44639. [2023-12-21 14:24:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44639 states, 44638 states have (on average 1.4736771360724046) internal successors, (65782), 44638 states have internal predecessors, (65782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44639 states to 44639 states and 65782 transitions. [2023-12-21 14:24:52,870 INFO L78 Accepts]: Start accepts. Automaton has 44639 states and 65782 transitions. Word has length 181 [2023-12-21 14:24:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:52,870 INFO L495 AbstractCegarLoop]: Abstraction has 44639 states and 65782 transitions. [2023-12-21 14:24:52,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 44639 states and 65782 transitions. [2023-12-21 14:24:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:24:52,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:52,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:52,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:24:52,879 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:52,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash 119980169, now seen corresponding path program 1 times [2023-12-21 14:24:52,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:52,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558946470] [2023-12-21 14:24:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:52,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558946470] [2023-12-21 14:24:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558946470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563164059] [2023-12-21 14:24:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:53,167 INFO L87 Difference]: Start difference. First operand 44639 states and 65782 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:53,428 INFO L93 Difference]: Finished difference Result 88269 states and 130461 transitions. [2023-12-21 14:24:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:24:53,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:24:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:53,489 INFO L225 Difference]: With dead ends: 88269 [2023-12-21 14:24:53,490 INFO L226 Difference]: Without dead ends: 44639 [2023-12-21 14:24:53,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:24:53,521 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1246 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:53,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 448 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44639 states. [2023-12-21 14:24:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44639 to 44639. [2023-12-21 14:24:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44639 states, 44638 states have (on average 1.4614454052600923) internal successors, (65236), 44638 states have internal predecessors, (65236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44639 states to 44639 states and 65236 transitions. [2023-12-21 14:24:54,307 INFO L78 Accepts]: Start accepts. Automaton has 44639 states and 65236 transitions. Word has length 181 [2023-12-21 14:24:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:54,307 INFO L495 AbstractCegarLoop]: Abstraction has 44639 states and 65236 transitions. [2023-12-21 14:24:54,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 44639 states and 65236 transitions. [2023-12-21 14:24:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:24:54,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:54,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:24:54,316 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1068363740, now seen corresponding path program 1 times [2023-12-21 14:24:54,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:54,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365211663] [2023-12-21 14:24:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:54,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:54,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:54,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365211663] [2023-12-21 14:24:54,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365211663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680495724] [2023-12-21 14:24:54,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:54,540 INFO L87 Difference]: Start difference. First operand 44639 states and 65236 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:54,871 INFO L93 Difference]: Finished difference Result 122457 states and 182150 transitions. [2023-12-21 14:24:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:24:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:55,012 INFO L225 Difference]: With dead ends: 122457 [2023-12-21 14:24:55,012 INFO L226 Difference]: Without dead ends: 86863 [2023-12-21 14:24:55,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:55,222 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 753 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:55,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 918 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86863 states. [2023-12-21 14:24:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86863 to 86861. [2023-12-21 14:24:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86861 states, 86860 states have (on average 1.46594519917108) internal successors, (127332), 86860 states have internal predecessors, (127332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86861 states to 86861 states and 127332 transitions. [2023-12-21 14:24:56,365 INFO L78 Accepts]: Start accepts. Automaton has 86861 states and 127332 transitions. Word has length 181 [2023-12-21 14:24:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:56,365 INFO L495 AbstractCegarLoop]: Abstraction has 86861 states and 127332 transitions. [2023-12-21 14:24:56,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 86861 states and 127332 transitions. [2023-12-21 14:24:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:24:56,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:56,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:24:56,381 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:56,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -236162137, now seen corresponding path program 1 times [2023-12-21 14:24:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946648341] [2023-12-21 14:24:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:56,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:56,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946648341] [2023-12-21 14:24:56,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946648341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:56,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:56,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:24:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101319377] [2023-12-21 14:24:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:56,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:56,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:56,485 INFO L87 Difference]: Start difference. First operand 86861 states and 127332 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:57,283 INFO L93 Difference]: Finished difference Result 182191 states and 272914 transitions. [2023-12-21 14:24:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:24:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:24:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:57,522 INFO L225 Difference]: With dead ends: 182191 [2023-12-21 14:24:57,522 INFO L226 Difference]: Without dead ends: 147515 [2023-12-21 14:24:57,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:24:57,577 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1063 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:57,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1625 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:24:57,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147515 states. [2023-12-21 14:24:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147515 to 104189. [2023-12-21 14:24:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104189 states, 104188 states have (on average 1.473279072445963) internal successors, (153498), 104188 states have internal predecessors, (153498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104189 states to 104189 states and 153498 transitions. [2023-12-21 14:24:59,381 INFO L78 Accepts]: Start accepts. Automaton has 104189 states and 153498 transitions. Word has length 181 [2023-12-21 14:24:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:59,381 INFO L495 AbstractCegarLoop]: Abstraction has 104189 states and 153498 transitions. [2023-12-21 14:24:59,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 104189 states and 153498 transitions. [2023-12-21 14:24:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:24:59,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:59,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:59,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:24:59,398 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:59,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash -58043465, now seen corresponding path program 1 times [2023-12-21 14:24:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268614786] [2023-12-21 14:24:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268614786] [2023-12-21 14:24:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268614786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142824286] [2023-12-21 14:24:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:59,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:59,460 INFO L87 Difference]: Start difference. First operand 104189 states and 153498 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:00,141 INFO L93 Difference]: Finished difference Result 149129 states and 221584 transitions. [2023-12-21 14:25:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:25:00,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:00,315 INFO L225 Difference]: With dead ends: 149129 [2023-12-21 14:25:00,316 INFO L226 Difference]: Without dead ends: 104191 [2023-12-21 14:25:00,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:25:00,355 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 281 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:00,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 956 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:25:00,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104191 states. [2023-12-21 14:25:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104191 to 104189. [2023-12-21 14:25:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104189 states, 104188 states have (on average 1.4691327216186125) internal successors, (153066), 104188 states have internal predecessors, (153066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104189 states to 104189 states and 153066 transitions. [2023-12-21 14:25:02,034 INFO L78 Accepts]: Start accepts. Automaton has 104189 states and 153066 transitions. Word has length 181 [2023-12-21 14:25:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:02,035 INFO L495 AbstractCegarLoop]: Abstraction has 104189 states and 153066 transitions. [2023-12-21 14:25:02,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 104189 states and 153066 transitions. [2023-12-21 14:25:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:02,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:02,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:25:02,048 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:02,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1668331806, now seen corresponding path program 1 times [2023-12-21 14:25:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408604554] [2023-12-21 14:25:02,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408604554] [2023-12-21 14:25:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408604554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:02,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:02,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:25:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82805476] [2023-12-21 14:25:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:25:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:25:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:25:02,146 INFO L87 Difference]: Start difference. First operand 104189 states and 153066 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:03,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:03,547 INFO L93 Difference]: Finished difference Result 381467 states and 575346 transitions. [2023-12-21 14:25:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:25:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:04,415 INFO L225 Difference]: With dead ends: 381467 [2023-12-21 14:25:04,416 INFO L226 Difference]: Without dead ends: 294735 [2023-12-21 14:25:04,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:25:04,473 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 1227 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:04,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 2459 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294735 states. [2023-12-21 14:25:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294735 to 181445. [2023-12-21 14:25:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181445 states, 181444 states have (on average 1.4794978064857476) internal successors, (268446), 181444 states have internal predecessors, (268446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181445 states to 181445 states and 268446 transitions. [2023-12-21 14:25:07,863 INFO L78 Accepts]: Start accepts. Automaton has 181445 states and 268446 transitions. Word has length 181 [2023-12-21 14:25:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:07,863 INFO L495 AbstractCegarLoop]: Abstraction has 181445 states and 268446 transitions. [2023-12-21 14:25:07,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 181445 states and 268446 transitions. [2023-12-21 14:25:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:07,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:07,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:25:07,879 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:07,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1747339126, now seen corresponding path program 1 times [2023-12-21 14:25:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365736528] [2023-12-21 14:25:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:07,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:08,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:08,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365736528] [2023-12-21 14:25:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365736528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:25:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289451161] [2023-12-21 14:25:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:08,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:25:08,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:25:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:25:08,120 INFO L87 Difference]: Start difference. First operand 181445 states and 268446 transitions. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:11,314 INFO L93 Difference]: Finished difference Result 757026 states and 1115311 transitions. [2023-12-21 14:25:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:25:11,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:13,209 INFO L225 Difference]: With dead ends: 757026 [2023-12-21 14:25:13,210 INFO L226 Difference]: Without dead ends: 634300 [2023-12-21 14:25:13,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:25:13,526 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 4146 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:13,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 2590 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:25:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634300 states. [2023-12-21 14:25:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634300 to 322539. [2023-12-21 14:25:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322539 states, 322538 states have (on average 1.497826612678196) internal successors, (483106), 322538 states have internal predecessors, (483106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322539 states to 322539 states and 483106 transitions. [2023-12-21 14:25:21,328 INFO L78 Accepts]: Start accepts. Automaton has 322539 states and 483106 transitions. Word has length 181 [2023-12-21 14:25:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 322539 states and 483106 transitions. [2023-12-21 14:25:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 322539 states and 483106 transitions. [2023-12-21 14:25:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:21,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:21,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:25:21,353 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:21,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash -882727743, now seen corresponding path program 1 times [2023-12-21 14:25:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530545587] [2023-12-21 14:25:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530545587] [2023-12-21 14:25:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530545587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:21,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:25:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265883326] [2023-12-21 14:25:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:21,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:21,897 INFO L87 Difference]: Start difference. First operand 322539 states and 483106 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:23,275 INFO L93 Difference]: Finished difference Result 401807 states and 603956 transitions. [2023-12-21 14:25:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:25:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:23,750 INFO L225 Difference]: With dead ends: 401807 [2023-12-21 14:25:23,751 INFO L226 Difference]: Without dead ends: 224645 [2023-12-21 14:25:23,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:23,879 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 817 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:23,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 922 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:25:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224645 states. [2023-12-21 14:25:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224645 to 224643. [2023-12-21 14:25:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224643 states, 224642 states have (on average 1.4831509690974973) internal successors, (333178), 224642 states have internal predecessors, (333178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224643 states to 224643 states and 333178 transitions. [2023-12-21 14:25:27,649 INFO L78 Accepts]: Start accepts. Automaton has 224643 states and 333178 transitions. Word has length 181 [2023-12-21 14:25:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:27,650 INFO L495 AbstractCegarLoop]: Abstraction has 224643 states and 333178 transitions. [2023-12-21 14:25:27,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 224643 states and 333178 transitions. [2023-12-21 14:25:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:27,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:27,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:25:27,667 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:27,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1766235855, now seen corresponding path program 1 times [2023-12-21 14:25:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114232538] [2023-12-21 14:25:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:27,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:27,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114232538] [2023-12-21 14:25:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114232538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:27,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:27,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:25:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978957106] [2023-12-21 14:25:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:27,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:27,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:27,768 INFO L87 Difference]: Start difference. First operand 224643 states and 333178 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:29,673 INFO L93 Difference]: Finished difference Result 448197 states and 669466 transitions. [2023-12-21 14:25:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:25:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:30,345 INFO L225 Difference]: With dead ends: 448197 [2023-12-21 14:25:30,345 INFO L226 Difference]: Without dead ends: 332959 [2023-12-21 14:25:30,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:25:30,440 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 414 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1860 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:25:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332959 states. [2023-12-21 14:25:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332959 to 224559. [2023-12-21 14:25:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224559 states, 224558 states have (on average 1.482779504626867) internal successors, (332970), 224558 states have internal predecessors, (332970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224559 states to 224559 states and 332970 transitions. [2023-12-21 14:25:34,929 INFO L78 Accepts]: Start accepts. Automaton has 224559 states and 332970 transitions. Word has length 181 [2023-12-21 14:25:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:34,930 INFO L495 AbstractCegarLoop]: Abstraction has 224559 states and 332970 transitions. [2023-12-21 14:25:34,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 224559 states and 332970 transitions. [2023-12-21 14:25:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:34,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:34,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:34,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 14:25:34,946 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:34,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1467651967, now seen corresponding path program 1 times [2023-12-21 14:25:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:34,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023784623] [2023-12-21 14:25:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:35,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023784623] [2023-12-21 14:25:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023784623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:35,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:35,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:25:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339698036] [2023-12-21 14:25:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:35,049 INFO L87 Difference]: Start difference. First operand 224559 states and 332970 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:37,015 INFO L93 Difference]: Finished difference Result 464111 states and 692436 transitions. [2023-12-21 14:25:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:25:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:37,772 INFO L225 Difference]: With dead ends: 464111 [2023-12-21 14:25:37,772 INFO L226 Difference]: Without dead ends: 342325 [2023-12-21 14:25:37,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:25:37,874 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 398 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:37,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1793 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:25:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342325 states. [2023-12-21 14:25:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342325 to 223963. [2023-12-21 14:25:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223963 states, 223962 states have (on average 1.4833230637340262) internal successors, (332208), 223962 states have internal predecessors, (332208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223963 states to 223963 states and 332208 transitions. [2023-12-21 14:25:42,832 INFO L78 Accepts]: Start accepts. Automaton has 223963 states and 332208 transitions. Word has length 181 [2023-12-21 14:25:42,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:42,832 INFO L495 AbstractCegarLoop]: Abstraction has 223963 states and 332208 transitions. [2023-12-21 14:25:42,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 223963 states and 332208 transitions. [2023-12-21 14:25:42,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:42,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:42,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:42,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 14:25:42,851 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:42,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash 316700248, now seen corresponding path program 1 times [2023-12-21 14:25:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:42,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521060488] [2023-12-21 14:25:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:43,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521060488] [2023-12-21 14:25:43,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521060488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:43,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:43,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:25:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971206208] [2023-12-21 14:25:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:43,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:25:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:25:43,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:25:43,045 INFO L87 Difference]: Start difference. First operand 223963 states and 332208 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:45,839 INFO L93 Difference]: Finished difference Result 595515 states and 877779 transitions. [2023-12-21 14:25:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:25:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:46,832 INFO L225 Difference]: With dead ends: 595515 [2023-12-21 14:25:46,832 INFO L226 Difference]: Without dead ends: 492291 [2023-12-21 14:25:47,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:25:47,274 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 4564 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:47,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 1235 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 14:25:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492291 states. [2023-12-21 14:25:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492291 to 205341. [2023-12-21 14:25:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205341 states, 205340 states have (on average 1.486354339144833) internal successors, (305208), 205340 states have internal predecessors, (305208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205341 states to 205341 states and 305208 transitions. [2023-12-21 14:25:52,573 INFO L78 Accepts]: Start accepts. Automaton has 205341 states and 305208 transitions. Word has length 181 [2023-12-21 14:25:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:52,573 INFO L495 AbstractCegarLoop]: Abstraction has 205341 states and 305208 transitions. [2023-12-21 14:25:52,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 205341 states and 305208 transitions. [2023-12-21 14:25:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:25:52,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:52,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 14:25:52,590 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:52,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash -329865358, now seen corresponding path program 1 times [2023-12-21 14:25:52,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:52,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013543861] [2023-12-21 14:25:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:25:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013543861] [2023-12-21 14:25:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013543861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:54,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:54,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 14:25:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119681145] [2023-12-21 14:25:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:25:54,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:25:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:25:54,528 INFO L87 Difference]: Start difference. First operand 205341 states and 305208 transitions. Second operand has 20 states, 20 states have (on average 9.05) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:59,638 INFO L93 Difference]: Finished difference Result 377320 states and 563888 transitions. [2023-12-21 14:25:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 14:25:59,639 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.05) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:25:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:00,229 INFO L225 Difference]: With dead ends: 377320 [2023-12-21 14:26:00,230 INFO L226 Difference]: Without dead ends: 287208 [2023-12-21 14:26:00,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=296, Invalid=1036, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 14:26:00,315 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 3214 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3214 SdHoareTripleChecker+Valid, 9925 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:00,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3214 Valid, 9925 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 14:26:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287208 states. [2023-12-21 14:26:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287208 to 205947. [2023-12-21 14:26:03,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205947 states, 205946 states have (on average 1.485413652122401) internal successors, (305915), 205946 states have internal predecessors, (305915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205947 states to 205947 states and 305915 transitions. [2023-12-21 14:26:03,833 INFO L78 Accepts]: Start accepts. Automaton has 205947 states and 305915 transitions. Word has length 181 [2023-12-21 14:26:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:03,834 INFO L495 AbstractCegarLoop]: Abstraction has 205947 states and 305915 transitions. [2023-12-21 14:26:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.05) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 205947 states and 305915 transitions. [2023-12-21 14:26:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 14:26:03,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:03,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 14:26:03,852 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:03,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1615829206, now seen corresponding path program 1 times [2023-12-21 14:26:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448461043] [2023-12-21 14:26:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448461043] [2023-12-21 14:26:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448461043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:05,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 14:26:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600707182] [2023-12-21 14:26:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:26:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:26:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:26:05,416 INFO L87 Difference]: Start difference. First operand 205947 states and 305915 transitions. Second operand has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:09,282 INFO L93 Difference]: Finished difference Result 361836 states and 539383 transitions. [2023-12-21 14:26:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 14:26:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2023-12-21 14:26:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:10,119 INFO L225 Difference]: With dead ends: 361836 [2023-12-21 14:26:10,120 INFO L226 Difference]: Without dead ends: 277423 [2023-12-21 14:26:10,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 14:26:10,160 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 3517 mSDsluCounter, 10204 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3517 SdHoareTripleChecker+Valid, 10983 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:10,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3517 Valid, 10983 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 14:26:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277423 states. [2023-12-21 14:26:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277423 to 206639. [2023-12-21 14:26:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206639 states, 206638 states have (on average 1.484301048209913) internal successors, (306713), 206638 states have internal predecessors, (306713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206639 states to 206639 states and 306713 transitions. [2023-12-21 14:26:13,456 INFO L78 Accepts]: Start accepts. Automaton has 206639 states and 306713 transitions. Word has length 181 [2023-12-21 14:26:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:13,456 INFO L495 AbstractCegarLoop]: Abstraction has 206639 states and 306713 transitions. [2023-12-21 14:26:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand 206639 states and 306713 transitions. [2023-12-21 14:26:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:13,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:13,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:13,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 14:26:13,474 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:13,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1020500621, now seen corresponding path program 1 times [2023-12-21 14:26:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125944356] [2023-12-21 14:26:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:13,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:13,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125944356] [2023-12-21 14:26:13,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125944356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:13,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:13,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989662091] [2023-12-21 14:26:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:13,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:13,516 INFO L87 Difference]: Start difference. First operand 206639 states and 306713 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:14,949 INFO L93 Difference]: Finished difference Result 360812 states and 536857 transitions. [2023-12-21 14:26:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:14,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:15,653 INFO L225 Difference]: With dead ends: 360812 [2023-12-21 14:26:15,654 INFO L226 Difference]: Without dead ends: 205528 [2023-12-21 14:26:15,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:15,687 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 366 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:15,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 462 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205528 states. [2023-12-21 14:26:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205528 to 205528. [2023-12-21 14:26:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205528 states, 205527 states have (on average 1.4814647223965707) internal successors, (304481), 205527 states have internal predecessors, (304481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205528 states to 205528 states and 304481 transitions. [2023-12-21 14:26:18,796 INFO L78 Accepts]: Start accepts. Automaton has 205528 states and 304481 transitions. Word has length 182 [2023-12-21 14:26:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:18,797 INFO L495 AbstractCegarLoop]: Abstraction has 205528 states and 304481 transitions. [2023-12-21 14:26:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 205528 states and 304481 transitions. [2023-12-21 14:26:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:18,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:18,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 14:26:18,813 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:18,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1440796049, now seen corresponding path program 1 times [2023-12-21 14:26:18,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:18,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309688323] [2023-12-21 14:26:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309688323] [2023-12-21 14:26:18,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309688323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:18,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:18,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916703849] [2023-12-21 14:26:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:18,854 INFO L87 Difference]: Start difference. First operand 205528 states and 304481 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:20,408 INFO L93 Difference]: Finished difference Result 372363 states and 549299 transitions. [2023-12-21 14:26:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:20,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:20,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:20,860 INFO L225 Difference]: With dead ends: 372363 [2023-12-21 14:26:20,861 INFO L226 Difference]: Without dead ends: 223448 [2023-12-21 14:26:20,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:20,949 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 369 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:20,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 510 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223448 states. [2023-12-21 14:26:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223448 to 204418. [2023-12-21 14:26:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204418 states, 204417 states have (on average 1.4785854405455514) internal successors, (302248), 204417 states have internal predecessors, (302248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204418 states to 204418 states and 302248 transitions. [2023-12-21 14:26:24,479 INFO L78 Accepts]: Start accepts. Automaton has 204418 states and 302248 transitions. Word has length 182 [2023-12-21 14:26:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:24,479 INFO L495 AbstractCegarLoop]: Abstraction has 204418 states and 302248 transitions. [2023-12-21 14:26:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 204418 states and 302248 transitions. [2023-12-21 14:26:24,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:24,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:24,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 14:26:24,494 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash -743113803, now seen corresponding path program 1 times [2023-12-21 14:26:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046266506] [2023-12-21 14:26:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:24,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:24,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046266506] [2023-12-21 14:26:24,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046266506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:24,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:24,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:24,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381487182] [2023-12-21 14:26:24,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:24,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:24,531 INFO L87 Difference]: Start difference. First operand 204418 states and 302248 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:25,833 INFO L93 Difference]: Finished difference Result 381062 states and 559360 transitions. [2023-12-21 14:26:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:25,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:26,333 INFO L225 Difference]: With dead ends: 381062 [2023-12-21 14:26:26,334 INFO L226 Difference]: Without dead ends: 232974 [2023-12-21 14:26:26,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:26,441 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 371 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:26,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 596 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232974 states. [2023-12-21 14:26:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232974 to 197907. [2023-12-21 14:26:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197907 states, 197906 states have (on average 1.4762361929400827) internal successors, (292156), 197906 states have internal predecessors, (292156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197907 states to 197907 states and 292156 transitions. [2023-12-21 14:26:29,687 INFO L78 Accepts]: Start accepts. Automaton has 197907 states and 292156 transitions. Word has length 182 [2023-12-21 14:26:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:29,687 INFO L495 AbstractCegarLoop]: Abstraction has 197907 states and 292156 transitions. [2023-12-21 14:26:29,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 197907 states and 292156 transitions. [2023-12-21 14:26:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:29,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:29,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 14:26:29,702 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:29,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -210690690, now seen corresponding path program 1 times [2023-12-21 14:26:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919278783] [2023-12-21 14:26:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:29,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:29,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919278783] [2023-12-21 14:26:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919278783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:29,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505730150] [2023-12-21 14:26:29,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:29,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:29,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:29,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:29,743 INFO L87 Difference]: Start difference. First operand 197907 states and 292156 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:31,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:31,289 INFO L93 Difference]: Finished difference Result 341714 states and 504052 transitions. [2023-12-21 14:26:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:31,715 INFO L225 Difference]: With dead ends: 341714 [2023-12-21 14:26:31,715 INFO L226 Difference]: Without dead ends: 198191 [2023-12-21 14:26:31,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:31,796 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 348 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:31,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 437 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:26:31,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198191 states. [2023-12-21 14:26:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198191 to 196180. [2023-12-21 14:26:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196180 states, 196179 states have (on average 1.471584624246224) internal successors, (288694), 196179 states have internal predecessors, (288694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196180 states to 196180 states and 288694 transitions. [2023-12-21 14:26:34,761 INFO L78 Accepts]: Start accepts. Automaton has 196180 states and 288694 transitions. Word has length 182 [2023-12-21 14:26:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:34,761 INFO L495 AbstractCegarLoop]: Abstraction has 196180 states and 288694 transitions. [2023-12-21 14:26:34,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 196180 states and 288694 transitions. [2023-12-21 14:26:34,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:34,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:34,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:34,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 14:26:34,777 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:34,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:34,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1399620668, now seen corresponding path program 1 times [2023-12-21 14:26:34,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:34,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083344643] [2023-12-21 14:26:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083344643] [2023-12-21 14:26:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083344643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659561026] [2023-12-21 14:26:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:34,818 INFO L87 Difference]: Start difference. First operand 196180 states and 288694 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:36,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:36,047 INFO L93 Difference]: Finished difference Result 356294 states and 520929 transitions. [2023-12-21 14:26:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:36,506 INFO L225 Difference]: With dead ends: 356294 [2023-12-21 14:26:36,506 INFO L226 Difference]: Without dead ends: 214647 [2023-12-21 14:26:36,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:36,613 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 350 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:36,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 506 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214647 states. [2023-12-21 14:26:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214647 to 195084. [2023-12-21 14:26:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195084 states, 195083 states have (on average 1.4685646622206958) internal successors, (286492), 195083 states have internal predecessors, (286492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195084 states to 195084 states and 286492 transitions. [2023-12-21 14:26:39,895 INFO L78 Accepts]: Start accepts. Automaton has 195084 states and 286492 transitions. Word has length 182 [2023-12-21 14:26:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:39,895 INFO L495 AbstractCegarLoop]: Abstraction has 195084 states and 286492 transitions. [2023-12-21 14:26:39,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 195084 states and 286492 transitions. [2023-12-21 14:26:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 14:26:39,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:39,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:39,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 14:26:39,910 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:39,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1131019742, now seen corresponding path program 1 times [2023-12-21 14:26:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897739228] [2023-12-21 14:26:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897739228] [2023-12-21 14:26:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897739228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:40,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181454541] [2023-12-21 14:26:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:40,013 INFO L87 Difference]: Start difference. First operand 195084 states and 286492 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:41,769 INFO L93 Difference]: Finished difference Result 363512 states and 529981 transitions. [2023-12-21 14:26:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:41,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-21 14:26:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:42,244 INFO L225 Difference]: With dead ends: 363512 [2023-12-21 14:26:42,244 INFO L226 Difference]: Without dead ends: 220819 [2023-12-21 14:26:42,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:42,334 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 353 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:42,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 546 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:42,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220819 states. [2023-12-21 14:26:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220819 to 189361. [2023-12-21 14:26:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189361 states, 189360 states have (on average 1.4660329531051965) internal successors, (277608), 189360 states have internal predecessors, (277608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189361 states to 189361 states and 277608 transitions. [2023-12-21 14:26:45,478 INFO L78 Accepts]: Start accepts. Automaton has 189361 states and 277608 transitions. Word has length 182 [2023-12-21 14:26:45,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:45,478 INFO L495 AbstractCegarLoop]: Abstraction has 189361 states and 277608 transitions. [2023-12-21 14:26:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:45,478 INFO L276 IsEmpty]: Start isEmpty. Operand 189361 states and 277608 transitions. [2023-12-21 14:26:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:26:45,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:45,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:45,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 14:26:45,494 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:45,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash 906590498, now seen corresponding path program 1 times [2023-12-21 14:26:45,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:45,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864311830] [2023-12-21 14:26:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:45,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:46,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864311830] [2023-12-21 14:26:46,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864311830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:46,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:46,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:26:46,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046945561] [2023-12-21 14:26:46,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 14:26:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 14:26:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-12-21 14:26:46,999 INFO L87 Difference]: Start difference. First operand 189361 states and 277608 transitions. Second operand has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:54,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:54,019 INFO L93 Difference]: Finished difference Result 401127 states and 586836 transitions. [2023-12-21 14:26:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 14:26:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:26:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:54,712 INFO L225 Difference]: With dead ends: 401127 [2023-12-21 14:26:54,713 INFO L226 Difference]: Without dead ends: 351699 [2023-12-21 14:26:54,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=975, Invalid=3447, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 14:26:54,796 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 6871 mSDsluCounter, 14403 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6871 SdHoareTripleChecker+Valid, 15460 SdHoareTripleChecker+Invalid, 4967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:54,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6871 Valid, 15460 Invalid, 4967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 4817 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 14:26:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351699 states. [2023-12-21 14:26:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351699 to 186572. [2023-12-21 14:26:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186572 states, 186571 states have (on average 1.4639949402640282) internal successors, (273139), 186571 states have internal predecessors, (273139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186572 states to 186572 states and 273139 transitions. [2023-12-21 14:26:58,689 INFO L78 Accepts]: Start accepts. Automaton has 186572 states and 273139 transitions. Word has length 184 [2023-12-21 14:26:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:58,689 INFO L495 AbstractCegarLoop]: Abstraction has 186572 states and 273139 transitions. [2023-12-21 14:26:58,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 186572 states and 273139 transitions. [2023-12-21 14:26:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:26:58,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:58,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 14:26:58,705 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:58,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1483882855, now seen corresponding path program 1 times [2023-12-21 14:26:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579425940] [2023-12-21 14:26:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:58,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579425940] [2023-12-21 14:26:58,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579425940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:58,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:58,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:26:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134858549] [2023-12-21 14:26:58,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:58,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:26:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:58,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:26:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:26:58,806 INFO L87 Difference]: Start difference. First operand 186572 states and 273139 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:00,417 INFO L93 Difference]: Finished difference Result 332422 states and 490981 transitions. [2023-12-21 14:27:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:27:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:01,007 INFO L225 Difference]: With dead ends: 332422 [2023-12-21 14:27:01,007 INFO L226 Difference]: Without dead ends: 294282 [2023-12-21 14:27:01,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:27:01,085 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 926 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:01,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1625 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:27:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294282 states. [2023-12-21 14:27:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294282 to 205632. [2023-12-21 14:27:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205632 states, 205631 states have (on average 1.46645690581673) internal successors, (301549), 205631 states have internal predecessors, (301549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:04,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205632 states to 205632 states and 301549 transitions. [2023-12-21 14:27:04,879 INFO L78 Accepts]: Start accepts. Automaton has 205632 states and 301549 transitions. Word has length 184 [2023-12-21 14:27:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:27:04,879 INFO L495 AbstractCegarLoop]: Abstraction has 205632 states and 301549 transitions. [2023-12-21 14:27:04,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:04,880 INFO L276 IsEmpty]: Start isEmpty. Operand 205632 states and 301549 transitions. [2023-12-21 14:27:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:27:04,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:27:04,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:27:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 14:27:04,894 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:27:04,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:27:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1207301778, now seen corresponding path program 1 times [2023-12-21 14:27:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:27:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413200087] [2023-12-21 14:27:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:27:04,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:27:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:27:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:27:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:27:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413200087] [2023-12-21 14:27:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413200087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:27:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:27:06,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-21 14:27:06,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969430993] [2023-12-21 14:27:06,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:27:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:27:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:27:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:27:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:27:06,496 INFO L87 Difference]: Start difference. First operand 205632 states and 301549 transitions. Second operand has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:12,941 INFO L93 Difference]: Finished difference Result 430262 states and 628797 transitions. [2023-12-21 14:27:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-21 14:27:12,941 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:13,645 INFO L225 Difference]: With dead ends: 430262 [2023-12-21 14:27:13,645 INFO L226 Difference]: Without dead ends: 380876 [2023-12-21 14:27:13,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=815, Invalid=3607, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 14:27:13,737 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 7360 mSDsluCounter, 14553 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7360 SdHoareTripleChecker+Valid, 15737 SdHoareTripleChecker+Invalid, 5008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7360 Valid, 15737 Invalid, 5008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 14:27:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380876 states. [2023-12-21 14:27:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380876 to 201006. [2023-12-21 14:27:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201006 states, 201005 states have (on average 1.4634213079276635) internal successors, (294155), 201005 states have internal predecessors, (294155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201006 states to 201006 states and 294155 transitions. [2023-12-21 14:27:18,699 INFO L78 Accepts]: Start accepts. Automaton has 201006 states and 294155 transitions. Word has length 184 [2023-12-21 14:27:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:27:18,699 INFO L495 AbstractCegarLoop]: Abstraction has 201006 states and 294155 transitions. [2023-12-21 14:27:18,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 201006 states and 294155 transitions. [2023-12-21 14:27:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:27:18,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:27:18,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:27:18,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 14:27:18,716 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:27:18,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:27:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1464024316, now seen corresponding path program 1 times [2023-12-21 14:27:18,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:27:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007475098] [2023-12-21 14:27:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:27:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:27:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:27:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:27:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:27:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007475098] [2023-12-21 14:27:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007475098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:27:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:27:18,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:27:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278438273] [2023-12-21 14:27:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:27:18,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:27:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:27:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:27:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:27:18,911 INFO L87 Difference]: Start difference. First operand 201006 states and 294155 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:20,227 INFO L93 Difference]: Finished difference Result 355192 states and 524191 transitions. [2023-12-21 14:27:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:27:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:21,019 INFO L225 Difference]: With dead ends: 355192 [2023-12-21 14:27:21,019 INFO L226 Difference]: Without dead ends: 317124 [2023-12-21 14:27:21,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:27:21,170 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 787 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:21,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2002 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:27:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317124 states. [2023-12-21 14:27:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317124 to 219994. [2023-12-21 14:27:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219994 states, 219993 states have (on average 1.4652693494793017) internal successors, (322349), 219993 states have internal predecessors, (322349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219994 states to 219994 states and 322349 transitions. [2023-12-21 14:27:25,675 INFO L78 Accepts]: Start accepts. Automaton has 219994 states and 322349 transitions. Word has length 184 [2023-12-21 14:27:25,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:27:25,675 INFO L495 AbstractCegarLoop]: Abstraction has 219994 states and 322349 transitions. [2023-12-21 14:27:25,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 219994 states and 322349 transitions. [2023-12-21 14:27:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:27:25,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:27:25,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:27:25,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 14:27:25,689 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:27:25,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:27:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1436427858, now seen corresponding path program 1 times [2023-12-21 14:27:25,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:27:25,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875826877] [2023-12-21 14:27:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:27:25,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:27:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:27:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:27:26,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:27:26,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875826877] [2023-12-21 14:27:26,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875826877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:27:26,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:27:26,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:27:26,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833129735] [2023-12-21 14:27:26,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:27:26,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 14:27:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:27:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 14:27:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2023-12-21 14:27:26,986 INFO L87 Difference]: Start difference. First operand 219994 states and 322349 transitions. Second operand has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:33,753 INFO L93 Difference]: Finished difference Result 343907 states and 502114 transitions. [2023-12-21 14:27:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 14:27:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:34,316 INFO L225 Difference]: With dead ends: 343907 [2023-12-21 14:27:34,317 INFO L226 Difference]: Without dead ends: 294521 [2023-12-21 14:27:34,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1313, Invalid=4849, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 14:27:34,376 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 6551 mSDsluCounter, 14691 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6551 SdHoareTripleChecker+Valid, 15761 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:34,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6551 Valid, 15761 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-21 14:27:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294521 states. [2023-12-21 14:27:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294521 to 212700. [2023-12-21 14:27:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212700 states, 212699 states have (on average 1.4616053672090608) internal successors, (310882), 212699 states have internal predecessors, (310882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212700 states to 212700 states and 310882 transitions. [2023-12-21 14:27:38,330 INFO L78 Accepts]: Start accepts. Automaton has 212700 states and 310882 transitions. Word has length 184 [2023-12-21 14:27:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:27:38,330 INFO L495 AbstractCegarLoop]: Abstraction has 212700 states and 310882 transitions. [2023-12-21 14:27:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 212700 states and 310882 transitions. [2023-12-21 14:27:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:27:38,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:27:38,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:27:38,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 14:27:38,343 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:27:38,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:27:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1795612767, now seen corresponding path program 1 times [2023-12-21 14:27:38,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:27:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479699512] [2023-12-21 14:27:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:27:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:27:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:27:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:27:39,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:27:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479699512] [2023-12-21 14:27:39,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479699512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:27:39,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:27:39,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-21 14:27:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273111934] [2023-12-21 14:27:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:27:39,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:27:39,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:27:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:27:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:27:39,775 INFO L87 Difference]: Start difference. First operand 212700 states and 310882 transitions. Second operand has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:46,412 INFO L93 Difference]: Finished difference Result 329645 states and 480101 transitions. [2023-12-21 14:27:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 14:27:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:47,221 INFO L225 Difference]: With dead ends: 329645 [2023-12-21 14:27:47,221 INFO L226 Difference]: Without dead ends: 283987 [2023-12-21 14:27:47,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 14:27:47,252 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 6252 mSDsluCounter, 16343 mSDsCounter, 0 mSdLazyCounter, 5243 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6252 SdHoareTripleChecker+Valid, 17565 SdHoareTripleChecker+Invalid, 5349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 5243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:47,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6252 Valid, 17565 Invalid, 5349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 5243 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 14:27:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283987 states. [2023-12-21 14:27:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283987 to 210656. [2023-12-21 14:27:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210656 states, 210655 states have (on average 1.4595096247418766) internal successors, (307453), 210655 states have internal predecessors, (307453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210656 states to 210656 states and 307453 transitions. [2023-12-21 14:27:50,648 INFO L78 Accepts]: Start accepts. Automaton has 210656 states and 307453 transitions. Word has length 184 [2023-12-21 14:27:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:27:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 210656 states and 307453 transitions. [2023-12-21 14:27:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.0) internal successors, (184), 22 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 210656 states and 307453 transitions. [2023-12-21 14:27:50,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:27:50,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:27:50,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:27:50,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 14:27:50,666 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:27:50,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:27:50,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2145741913, now seen corresponding path program 1 times [2023-12-21 14:27:50,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:27:50,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067066732] [2023-12-21 14:27:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:27:50,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:27:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:27:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:27:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:27:52,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067066732] [2023-12-21 14:27:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067066732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:27:52,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:27:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:27:52,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393250058] [2023-12-21 14:27:52,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:27:52,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 14:27:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:27:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 14:27:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2023-12-21 14:27:52,147 INFO L87 Difference]: Start difference. First operand 210656 states and 307453 transitions. Second operand has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:27:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:27:59,467 INFO L93 Difference]: Finished difference Result 399519 states and 581715 transitions. [2023-12-21 14:27:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 14:27:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:27:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:00,414 INFO L225 Difference]: With dead ends: 399519 [2023-12-21 14:28:00,414 INFO L226 Difference]: Without dead ends: 348848 [2023-12-21 14:28:00,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=946, Invalid=3746, Unknown=0, NotChecked=0, Total=4692 [2023-12-21 14:28:00,493 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 8104 mSDsluCounter, 14548 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8104 SdHoareTripleChecker+Valid, 15593 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:00,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8104 Valid, 15593 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 14:28:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348848 states. [2023-12-21 14:28:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348848 to 206458. [2023-12-21 14:28:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206458 states, 206457 states have (on average 1.4568554226788144) internal successors, (300778), 206457 states have internal predecessors, (300778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206458 states to 206458 states and 300778 transitions. [2023-12-21 14:28:04,776 INFO L78 Accepts]: Start accepts. Automaton has 206458 states and 300778 transitions. Word has length 184 [2023-12-21 14:28:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:04,776 INFO L495 AbstractCegarLoop]: Abstraction has 206458 states and 300778 transitions. [2023-12-21 14:28:04,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.363636363636363) internal successors, (184), 21 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 206458 states and 300778 transitions. [2023-12-21 14:28:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 14:28:04,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:04,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:04,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 14:28:04,791 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:04,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -681791671, now seen corresponding path program 1 times [2023-12-21 14:28:04,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:04,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566373186] [2023-12-21 14:28:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:06,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566373186] [2023-12-21 14:28:06,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566373186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:06,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:06,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-21 14:28:06,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447029061] [2023-12-21 14:28:06,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:06,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 14:28:06,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 14:28:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:28:06,122 INFO L87 Difference]: Start difference. First operand 206458 states and 300778 transitions. Second operand has 25 states, 25 states have (on average 7.36) internal successors, (184), 24 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:14,280 INFO L93 Difference]: Finished difference Result 468338 states and 683188 transitions. [2023-12-21 14:28:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 14:28:14,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 24 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-21 14:28:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:15,119 INFO L225 Difference]: With dead ends: 468338 [2023-12-21 14:28:15,120 INFO L226 Difference]: Without dead ends: 414288 [2023-12-21 14:28:15,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1454, Invalid=5352, Unknown=0, NotChecked=0, Total=6806 [2023-12-21 14:28:15,183 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 8887 mSDsluCounter, 13343 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8887 SdHoareTripleChecker+Valid, 14335 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:15,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8887 Valid, 14335 Invalid, 4864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 4656 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 14:28:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414288 states. [2023-12-21 14:28:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414288 to 200376. [2023-12-21 14:28:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200376 states, 200375 states have (on average 1.4537991266375545) internal successors, (291305), 200375 states have internal predecessors, (291305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200376 states to 200376 states and 291305 transitions. [2023-12-21 14:28:19,865 INFO L78 Accepts]: Start accepts. Automaton has 200376 states and 291305 transitions. Word has length 184 [2023-12-21 14:28:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 200376 states and 291305 transitions. [2023-12-21 14:28:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 24 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 200376 states and 291305 transitions. [2023-12-21 14:28:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 14:28:19,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:19,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 14:28:19,884 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:19,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1311821014, now seen corresponding path program 1 times [2023-12-21 14:28:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29540593] [2023-12-21 14:28:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:19,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:20,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:20,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29540593] [2023-12-21 14:28:20,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29540593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:20,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:20,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 14:28:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179513223] [2023-12-21 14:28:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 14:28:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 14:28:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:28:20,957 INFO L87 Difference]: Start difference. First operand 200376 states and 291305 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:22,935 INFO L93 Difference]: Finished difference Result 318156 states and 464218 transitions. [2023-12-21 14:28:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 14:28:22,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2023-12-21 14:28:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:23,350 INFO L225 Difference]: With dead ends: 318156 [2023-12-21 14:28:23,351 INFO L226 Difference]: Without dead ends: 216186 [2023-12-21 14:28:23,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-21 14:28:23,427 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1512 mSDsluCounter, 5902 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 6715 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:23,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 6715 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:28:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216186 states. [2023-12-21 14:28:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216186 to 188002. [2023-12-21 14:28:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188002 states, 188001 states have (on average 1.452710357923628) internal successors, (273111), 188001 states have internal predecessors, (273111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188002 states to 188002 states and 273111 transitions. [2023-12-21 14:28:26,530 INFO L78 Accepts]: Start accepts. Automaton has 188002 states and 273111 transitions. Word has length 186 [2023-12-21 14:28:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:26,531 INFO L495 AbstractCegarLoop]: Abstraction has 188002 states and 273111 transitions. [2023-12-21 14:28:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 188002 states and 273111 transitions. [2023-12-21 14:28:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-21 14:28:26,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:26,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:26,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 14:28:26,547 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:26,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:26,548 INFO L85 PathProgramCache]: Analyzing trace with hash -934890201, now seen corresponding path program 1 times [2023-12-21 14:28:26,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:26,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314265533] [2023-12-21 14:28:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314265533] [2023-12-21 14:28:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314265533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:27,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:27,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 14:28:27,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973410998] [2023-12-21 14:28:27,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 14:28:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:27,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 14:28:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:28:27,417 INFO L87 Difference]: Start difference. First operand 188002 states and 273111 transitions. Second operand has 15 states, 15 states have (on average 12.4) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:29,614 INFO L93 Difference]: Finished difference Result 272664 states and 396385 transitions. [2023-12-21 14:28:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 14:28:29,615 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.4) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2023-12-21 14:28:29,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:29,921 INFO L225 Difference]: With dead ends: 272664 [2023-12-21 14:28:29,922 INFO L226 Difference]: Without dead ends: 179913 [2023-12-21 14:28:29,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-12-21 14:28:29,983 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1970 mSDsluCounter, 6977 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 7841 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:29,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 7841 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:28:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179913 states. [2023-12-21 14:28:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179913 to 177364. [2023-12-21 14:28:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177364 states, 177363 states have (on average 1.4523829660075664) internal successors, (257599), 177363 states have internal predecessors, (257599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177364 states to 177364 states and 257599 transitions. [2023-12-21 14:28:32,418 INFO L78 Accepts]: Start accepts. Automaton has 177364 states and 257599 transitions. Word has length 186 [2023-12-21 14:28:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:32,418 INFO L495 AbstractCegarLoop]: Abstraction has 177364 states and 257599 transitions. [2023-12-21 14:28:32,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.4) internal successors, (186), 14 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 177364 states and 257599 transitions. [2023-12-21 14:28:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 14:28:32,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:32,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:32,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 14:28:32,433 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:32,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1042314380, now seen corresponding path program 1 times [2023-12-21 14:28:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:32,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089274725] [2023-12-21 14:28:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:32,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:32,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089274725] [2023-12-21 14:28:32,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089274725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:32,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:32,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:28:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023137047] [2023-12-21 14:28:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:32,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:28:32,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:28:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:32,476 INFO L87 Difference]: Start difference. First operand 177364 states and 257599 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:33,389 INFO L93 Difference]: Finished difference Result 232645 states and 337783 transitions. [2023-12-21 14:28:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:28:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-21 14:28:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:33,692 INFO L225 Difference]: With dead ends: 232645 [2023-12-21 14:28:33,692 INFO L226 Difference]: Without dead ends: 174448 [2023-12-21 14:28:33,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:33,769 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 284 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 884 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:28:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174448 states. [2023-12-21 14:28:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174448 to 174446. [2023-12-21 14:28:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174446 states, 174445 states have (on average 1.446318323826994) internal successors, (252303), 174445 states have internal predecessors, (252303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174446 states to 174446 states and 252303 transitions. [2023-12-21 14:28:36,461 INFO L78 Accepts]: Start accepts. Automaton has 174446 states and 252303 transitions. Word has length 187 [2023-12-21 14:28:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:36,462 INFO L495 AbstractCegarLoop]: Abstraction has 174446 states and 252303 transitions. [2023-12-21 14:28:36,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand 174446 states and 252303 transitions. [2023-12-21 14:28:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 14:28:36,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:36,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 14:28:36,485 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:36,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1644589004, now seen corresponding path program 1 times [2023-12-21 14:28:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535853799] [2023-12-21 14:28:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535853799] [2023-12-21 14:28:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535853799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:28:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802308787] [2023-12-21 14:28:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:36,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:28:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:28:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:36,548 INFO L87 Difference]: Start difference. First operand 174446 states and 252303 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:37,405 INFO L93 Difference]: Finished difference Result 228901 states and 330589 transitions. [2023-12-21 14:28:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:28:37,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-21 14:28:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:37,708 INFO L225 Difference]: With dead ends: 228901 [2023-12-21 14:28:37,708 INFO L226 Difference]: Without dead ends: 174411 [2023-12-21 14:28:37,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:37,771 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 270 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:37,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 887 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:28:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174411 states. [2023-12-21 14:28:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174411 to 174409. [2023-12-21 14:28:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174409 states, 174408 states have (on average 1.441120820145865) internal successors, (251343), 174408 states have internal predecessors, (251343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174409 states to 174409 states and 251343 transitions. [2023-12-21 14:28:40,447 INFO L78 Accepts]: Start accepts. Automaton has 174409 states and 251343 transitions. Word has length 187 [2023-12-21 14:28:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:40,448 INFO L495 AbstractCegarLoop]: Abstraction has 174409 states and 251343 transitions. [2023-12-21 14:28:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 174409 states and 251343 transitions. [2023-12-21 14:28:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 14:28:40,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:40,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 14:28:40,480 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:40,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 837009074, now seen corresponding path program 1 times [2023-12-21 14:28:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:40,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298454142] [2023-12-21 14:28:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:40,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:40,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298454142] [2023-12-21 14:28:40,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298454142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:40,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:40,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:28:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690106138] [2023-12-21 14:28:40,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:28:40,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:28:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:40,524 INFO L87 Difference]: Start difference. First operand 174409 states and 251343 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:41,465 INFO L93 Difference]: Finished difference Result 223669 states and 321932 transitions. [2023-12-21 14:28:41,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:28:41,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-21 14:28:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:41,776 INFO L225 Difference]: With dead ends: 223669 [2023-12-21 14:28:41,777 INFO L226 Difference]: Without dead ends: 171632 [2023-12-21 14:28:41,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:41,828 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 276 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:41,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1000 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:28:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171632 states. [2023-12-21 14:28:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171632 to 171615. [2023-12-21 14:28:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171615 states, 171614 states have (on average 1.4361940168051557) internal successors, (246471), 171614 states have internal predecessors, (246471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171615 states to 171615 states and 246471 transitions. [2023-12-21 14:28:44,306 INFO L78 Accepts]: Start accepts. Automaton has 171615 states and 246471 transitions. Word has length 187 [2023-12-21 14:28:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:44,306 INFO L495 AbstractCegarLoop]: Abstraction has 171615 states and 246471 transitions. [2023-12-21 14:28:44,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 171615 states and 246471 transitions. [2023-12-21 14:28:44,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 14:28:44,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:44,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:44,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 14:28:44,320 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:44,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -818478673, now seen corresponding path program 1 times [2023-12-21 14:28:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462027625] [2023-12-21 14:28:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462027625] [2023-12-21 14:28:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462027625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:44,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:44,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:28:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518982798] [2023-12-21 14:28:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:28:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:28:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:44,361 INFO L87 Difference]: Start difference. First operand 171615 states and 246471 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:45,266 INFO L93 Difference]: Finished difference Result 220682 states and 316916 transitions. [2023-12-21 14:28:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:28:45,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-21 14:28:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:45,525 INFO L225 Difference]: With dead ends: 220682 [2023-12-21 14:28:45,525 INFO L226 Difference]: Without dead ends: 165407 [2023-12-21 14:28:45,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:45,571 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 283 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:45,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 987 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:28:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165407 states. [2023-12-21 14:28:47,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165407 to 165388. [2023-12-21 14:28:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165388 states, 165387 states have (on average 1.4308379739640964) internal successors, (236642), 165387 states have internal predecessors, (236642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165388 states to 165388 states and 236642 transitions. [2023-12-21 14:28:47,892 INFO L78 Accepts]: Start accepts. Automaton has 165388 states and 236642 transitions. Word has length 187 [2023-12-21 14:28:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 165388 states and 236642 transitions. [2023-12-21 14:28:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 165388 states and 236642 transitions. [2023-12-21 14:28:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-21 14:28:47,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:47,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 14:28:47,906 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:47,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 630339399, now seen corresponding path program 1 times [2023-12-21 14:28:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:47,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842090496] [2023-12-21 14:28:47,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:47,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842090496] [2023-12-21 14:28:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842090496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:47,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:47,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:28:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382944681] [2023-12-21 14:28:47,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:47,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:28:47,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:28:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:47,949 INFO L87 Difference]: Start difference. First operand 165388 states and 236642 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:48,827 INFO L93 Difference]: Finished difference Result 211723 states and 302789 transitions. [2023-12-21 14:28:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:28:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-21 14:28:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:49,117 INFO L225 Difference]: With dead ends: 211723 [2023-12-21 14:28:49,118 INFO L226 Difference]: Without dead ends: 162867 [2023-12-21 14:28:49,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:28:49,167 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 269 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:49,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 979 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:28:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162867 states. [2023-12-21 14:28:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162867 to 162850. [2023-12-21 14:28:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162850 states, 162849 states have (on average 1.4247615889566407) internal successors, (232021), 162849 states have internal predecessors, (232021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162850 states to 162850 states and 232021 transitions. [2023-12-21 14:28:51,447 INFO L78 Accepts]: Start accepts. Automaton has 162850 states and 232021 transitions. Word has length 187 [2023-12-21 14:28:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:51,447 INFO L495 AbstractCegarLoop]: Abstraction has 162850 states and 232021 transitions. [2023-12-21 14:28:51,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 162850 states and 232021 transitions. [2023-12-21 14:28:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:28:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:51,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:51,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 14:28:51,461 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1048486627, now seen corresponding path program 1 times [2023-12-21 14:28:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437051190] [2023-12-21 14:28:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:28:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:28:52,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:28:52,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437051190] [2023-12-21 14:28:52,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437051190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:28:52,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:28:52,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 14:28:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557625051] [2023-12-21 14:28:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:28:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:28:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:28:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:28:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:28:52,918 INFO L87 Difference]: Start difference. First operand 162850 states and 232021 transitions. Second operand has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:28:56,207 INFO L93 Difference]: Finished difference Result 192939 states and 275115 transitions. [2023-12-21 14:28:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 14:28:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:28:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:28:56,460 INFO L225 Difference]: With dead ends: 192939 [2023-12-21 14:28:56,460 INFO L226 Difference]: Without dead ends: 161633 [2023-12-21 14:28:56,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 14:28:56,522 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 3584 mSDsluCounter, 8289 mSDsCounter, 0 mSdLazyCounter, 2673 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3584 SdHoareTripleChecker+Valid, 8974 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:28:56,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3584 Valid, 8974 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2673 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 14:28:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161633 states. [2023-12-21 14:28:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161633 to 149384. [2023-12-21 14:28:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149384 states, 149383 states have (on average 1.422082834057423) internal successors, (212435), 149383 states have internal predecessors, (212435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149384 states to 149384 states and 212435 transitions. [2023-12-21 14:28:58,866 INFO L78 Accepts]: Start accepts. Automaton has 149384 states and 212435 transitions. Word has length 189 [2023-12-21 14:28:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:28:58,866 INFO L495 AbstractCegarLoop]: Abstraction has 149384 states and 212435 transitions. [2023-12-21 14:28:58,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:28:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 149384 states and 212435 transitions. [2023-12-21 14:28:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:28:58,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:28:58,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:28:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 14:28:58,880 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:28:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:28:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -289636473, now seen corresponding path program 1 times [2023-12-21 14:28:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:28:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398202565] [2023-12-21 14:28:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:28:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:28:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:00,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398202565] [2023-12-21 14:29:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398202565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:00,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:00,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 14:29:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742344099] [2023-12-21 14:29:00,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:29:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:29:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:29:00,131 INFO L87 Difference]: Start difference. First operand 149384 states and 212435 transitions. Second operand has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:03,204 INFO L93 Difference]: Finished difference Result 163613 states and 232712 transitions. [2023-12-21 14:29:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 14:29:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:03,572 INFO L225 Difference]: With dead ends: 163613 [2023-12-21 14:29:03,572 INFO L226 Difference]: Without dead ends: 141464 [2023-12-21 14:29:03,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:29:03,590 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 2144 mSDsluCounter, 9684 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 10510 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:03,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 10510 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 14:29:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141464 states. [2023-12-21 14:29:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141464 to 141457. [2023-12-21 14:29:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141457 states, 141456 states have (on average 1.420003393281303) internal successors, (200868), 141456 states have internal predecessors, (200868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141457 states to 141457 states and 200868 transitions. [2023-12-21 14:29:05,479 INFO L78 Accepts]: Start accepts. Automaton has 141457 states and 200868 transitions. Word has length 189 [2023-12-21 14:29:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:05,479 INFO L495 AbstractCegarLoop]: Abstraction has 141457 states and 200868 transitions. [2023-12-21 14:29:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 141457 states and 200868 transitions. [2023-12-21 14:29:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:05,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 14:29:05,492 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:05,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash -28265836, now seen corresponding path program 1 times [2023-12-21 14:29:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497325472] [2023-12-21 14:29:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:05,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497325472] [2023-12-21 14:29:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497325472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:29:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347454318] [2023-12-21 14:29:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:06,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 14:29:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 14:29:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-12-21 14:29:06,742 INFO L87 Difference]: Start difference. First operand 141457 states and 200868 transitions. Second operand has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:10,028 INFO L93 Difference]: Finished difference Result 207332 states and 296667 transitions. [2023-12-21 14:29:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 14:29:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:10,348 INFO L225 Difference]: With dead ends: 207332 [2023-12-21 14:29:10,348 INFO L226 Difference]: Without dead ends: 177873 [2023-12-21 14:29:10,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=401, Invalid=1239, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 14:29:10,394 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 3564 mSDsluCounter, 6971 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 7643 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:10,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3564 Valid, 7643 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 14:29:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177873 states. [2023-12-21 14:29:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177873 to 134030. [2023-12-21 14:29:12,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134030 states, 134029 states have (on average 1.420222489162793) internal successors, (190351), 134029 states have internal predecessors, (190351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134030 states to 134030 states and 190351 transitions. [2023-12-21 14:29:12,760 INFO L78 Accepts]: Start accepts. Automaton has 134030 states and 190351 transitions. Word has length 189 [2023-12-21 14:29:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:12,760 INFO L495 AbstractCegarLoop]: Abstraction has 134030 states and 190351 transitions. [2023-12-21 14:29:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 134030 states and 190351 transitions. [2023-12-21 14:29:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:12,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:12,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 14:29:12,791 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:12,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1548212659, now seen corresponding path program 1 times [2023-12-21 14:29:12,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:12,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358417108] [2023-12-21 14:29:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:12,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358417108] [2023-12-21 14:29:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358417108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:13,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:29:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741459168] [2023-12-21 14:29:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:13,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 14:29:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 14:29:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-12-21 14:29:13,905 INFO L87 Difference]: Start difference. First operand 134030 states and 190351 transitions. Second operand has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:16,929 INFO L93 Difference]: Finished difference Result 186732 states and 266696 transitions. [2023-12-21 14:29:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 14:29:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:17,203 INFO L225 Difference]: With dead ends: 186732 [2023-12-21 14:29:17,203 INFO L226 Difference]: Without dead ends: 164450 [2023-12-21 14:29:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=340, Invalid=1142, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:29:17,252 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 3744 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 9048 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:17,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 9048 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 14:29:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164450 states. [2023-12-21 14:29:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164450 to 126150. [2023-12-21 14:29:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126150 states, 126149 states have (on average 1.4172209054372211) internal successors, (178781), 126149 states have internal predecessors, (178781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126150 states to 126150 states and 178781 transitions. [2023-12-21 14:29:19,207 INFO L78 Accepts]: Start accepts. Automaton has 126150 states and 178781 transitions. Word has length 189 [2023-12-21 14:29:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:19,208 INFO L495 AbstractCegarLoop]: Abstraction has 126150 states and 178781 transitions. [2023-12-21 14:29:19,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.590909090909092) internal successors, (189), 21 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 126150 states and 178781 transitions. [2023-12-21 14:29:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:19,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:19,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:19,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-21 14:29:19,221 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:19,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash 807676423, now seen corresponding path program 1 times [2023-12-21 14:29:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:19,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073348940] [2023-12-21 14:29:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:20,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073348940] [2023-12-21 14:29:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073348940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 14:29:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15395321] [2023-12-21 14:29:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 14:29:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 14:29:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:29:20,262 INFO L87 Difference]: Start difference. First operand 126150 states and 178781 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:22,197 INFO L93 Difference]: Finished difference Result 148948 states and 211565 transitions. [2023-12-21 14:29:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:29:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:22,413 INFO L225 Difference]: With dead ends: 148948 [2023-12-21 14:29:22,414 INFO L226 Difference]: Without dead ends: 126324 [2023-12-21 14:29:22,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=321, Invalid=1161, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:29:22,447 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 2976 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:22,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 7176 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 14:29:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126324 states. [2023-12-21 14:29:23,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126324 to 122184. [2023-12-21 14:29:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122184 states, 122183 states have (on average 1.4159334768339293) internal successors, (173003), 122183 states have internal predecessors, (173003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122184 states to 122184 states and 173003 transitions. [2023-12-21 14:29:24,183 INFO L78 Accepts]: Start accepts. Automaton has 122184 states and 173003 transitions. Word has length 189 [2023-12-21 14:29:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:24,183 INFO L495 AbstractCegarLoop]: Abstraction has 122184 states and 173003 transitions. [2023-12-21 14:29:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 122184 states and 173003 transitions. [2023-12-21 14:29:24,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:24,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:24,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:24,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-21 14:29:24,194 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:24,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:24,194 INFO L85 PathProgramCache]: Analyzing trace with hash -900480243, now seen corresponding path program 1 times [2023-12-21 14:29:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:24,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739265822] [2023-12-21 14:29:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:24,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:25,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739265822] [2023-12-21 14:29:25,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739265822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:25,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 14:29:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915818847] [2023-12-21 14:29:25,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:25,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:29:25,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:29:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:29:25,036 INFO L87 Difference]: Start difference. First operand 122184 states and 173003 transitions. Second operand has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:27,396 INFO L93 Difference]: Finished difference Result 166542 states and 237117 transitions. [2023-12-21 14:29:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 14:29:27,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:27,802 INFO L225 Difference]: With dead ends: 166542 [2023-12-21 14:29:27,803 INFO L226 Difference]: Without dead ends: 143951 [2023-12-21 14:29:27,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 14:29:27,817 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 2596 mSDsluCounter, 11013 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 11857 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:27,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 11857 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 14:29:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143951 states. [2023-12-21 14:29:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143951 to 114072. [2023-12-21 14:29:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114072 states, 114071 states have (on average 1.4130673001902323) internal successors, (161190), 114071 states have internal predecessors, (161190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114072 states to 114072 states and 161190 transitions. [2023-12-21 14:29:29,639 INFO L78 Accepts]: Start accepts. Automaton has 114072 states and 161190 transitions. Word has length 189 [2023-12-21 14:29:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:29,640 INFO L495 AbstractCegarLoop]: Abstraction has 114072 states and 161190 transitions. [2023-12-21 14:29:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.45) internal successors, (189), 19 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 114072 states and 161190 transitions. [2023-12-21 14:29:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:29,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:29,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:29,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 14:29:29,652 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:29,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1744669451, now seen corresponding path program 1 times [2023-12-21 14:29:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:29,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321065133] [2023-12-21 14:29:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321065133] [2023-12-21 14:29:30,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321065133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:30,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:30,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 14:29:30,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401788801] [2023-12-21 14:29:30,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:30,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 14:29:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:30,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 14:29:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:29:30,440 INFO L87 Difference]: Start difference. First operand 114072 states and 161190 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:32,614 INFO L93 Difference]: Finished difference Result 127861 states and 180819 transitions. [2023-12-21 14:29:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-21 14:29:32,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:32,792 INFO L225 Difference]: With dead ends: 127861 [2023-12-21 14:29:32,792 INFO L226 Difference]: Without dead ends: 106720 [2023-12-21 14:29:32,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=422, Invalid=1834, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 14:29:32,836 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 2722 mSDsluCounter, 9696 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2722 SdHoareTripleChecker+Valid, 10583 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:32,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2722 Valid, 10583 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 14:29:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106720 states. [2023-12-21 14:29:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106720 to 106713. [2023-12-21 14:29:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106713 states, 106712 states have (on average 1.4099632656121148) internal successors, (150460), 106712 states have internal predecessors, (150460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106713 states to 106713 states and 150460 transitions. [2023-12-21 14:29:34,493 INFO L78 Accepts]: Start accepts. Automaton has 106713 states and 150460 transitions. Word has length 189 [2023-12-21 14:29:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:34,493 INFO L495 AbstractCegarLoop]: Abstraction has 106713 states and 150460 transitions. [2023-12-21 14:29:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 106713 states and 150460 transitions. [2023-12-21 14:29:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 14:29:34,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:34,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 14:29:34,504 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:34,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1731838644, now seen corresponding path program 1 times [2023-12-21 14:29:34,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:34,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60148637] [2023-12-21 14:29:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60148637] [2023-12-21 14:29:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60148637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:35,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 14:29:35,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938831381] [2023-12-21 14:29:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:35,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:29:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:29:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:29:35,813 INFO L87 Difference]: Start difference. First operand 106713 states and 150460 transitions. Second operand has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:38,744 INFO L93 Difference]: Finished difference Result 143401 states and 203705 transitions. [2023-12-21 14:29:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 14:29:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-21 14:29:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:38,952 INFO L225 Difference]: With dead ends: 143401 [2023-12-21 14:29:38,952 INFO L226 Difference]: Without dead ends: 131325 [2023-12-21 14:29:39,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 14:29:39,000 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 2191 mSDsluCounter, 7211 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 7885 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:39,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 7885 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 14:29:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131325 states. [2023-12-21 14:29:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131325 to 104214. [2023-12-21 14:29:40,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104214 states, 104213 states have (on average 1.4097281529175822) internal successors, (146912), 104213 states have internal predecessors, (146912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104214 states to 104214 states and 146912 transitions. [2023-12-21 14:29:40,742 INFO L78 Accepts]: Start accepts. Automaton has 104214 states and 146912 transitions. Word has length 189 [2023-12-21 14:29:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:40,742 INFO L495 AbstractCegarLoop]: Abstraction has 104214 states and 146912 transitions. [2023-12-21 14:29:40,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.0) internal successors, (189), 20 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 104214 states and 146912 transitions. [2023-12-21 14:29:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:40,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:40,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-21 14:29:40,753 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:40,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -728174364, now seen corresponding path program 1 times [2023-12-21 14:29:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701353689] [2023-12-21 14:29:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701353689] [2023-12-21 14:29:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701353689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:40,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:40,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:29:40,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465803674] [2023-12-21 14:29:40,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:40,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:29:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:40,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:29:40,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:29:40,855 INFO L87 Difference]: Start difference. First operand 104214 states and 146912 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:41,601 INFO L93 Difference]: Finished difference Result 170950 states and 243928 transitions. [2023-12-21 14:29:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:29:41,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:41,785 INFO L225 Difference]: With dead ends: 170950 [2023-12-21 14:29:41,786 INFO L226 Difference]: Without dead ends: 132810 [2023-12-21 14:29:41,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:29:41,806 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 920 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:41,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1597 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:29:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132810 states. [2023-12-21 14:29:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132810 to 104214. [2023-12-21 14:29:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104214 states, 104213 states have (on average 1.403222246744648) internal successors, (146234), 104213 states have internal predecessors, (146234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:43,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104214 states to 104214 states and 146234 transitions. [2023-12-21 14:29:43,513 INFO L78 Accepts]: Start accepts. Automaton has 104214 states and 146234 transitions. Word has length 190 [2023-12-21 14:29:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:43,514 INFO L495 AbstractCegarLoop]: Abstraction has 104214 states and 146234 transitions. [2023-12-21 14:29:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 104214 states and 146234 transitions. [2023-12-21 14:29:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:43,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:43,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-21 14:29:43,525 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:43,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 91055655, now seen corresponding path program 1 times [2023-12-21 14:29:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405615768] [2023-12-21 14:29:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:43,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405615768] [2023-12-21 14:29:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405615768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:29:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680574205] [2023-12-21 14:29:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:29:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:29:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:29:43,576 INFO L87 Difference]: Start difference. First operand 104214 states and 146234 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:43,921 INFO L93 Difference]: Finished difference Result 132897 states and 187510 transitions. [2023-12-21 14:29:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:29:43,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:44,085 INFO L225 Difference]: With dead ends: 132897 [2023-12-21 14:29:44,085 INFO L226 Difference]: Without dead ends: 104226 [2023-12-21 14:29:44,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:29:44,132 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 233 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:44,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 918 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:29:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104226 states. [2023-12-21 14:29:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104226 to 104190. [2023-12-21 14:29:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104190 states, 104189 states have (on average 1.4019618193859236) internal successors, (146069), 104189 states have internal predecessors, (146069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104190 states to 104190 states and 146069 transitions. [2023-12-21 14:29:45,747 INFO L78 Accepts]: Start accepts. Automaton has 104190 states and 146069 transitions. Word has length 190 [2023-12-21 14:29:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:45,747 INFO L495 AbstractCegarLoop]: Abstraction has 104190 states and 146069 transitions. [2023-12-21 14:29:45,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 104190 states and 146069 transitions. [2023-12-21 14:29:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:45,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:45,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:45,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-21 14:29:45,759 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:45,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash 245178326, now seen corresponding path program 1 times [2023-12-21 14:29:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:45,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043746094] [2023-12-21 14:29:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043746094] [2023-12-21 14:29:45,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043746094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:45,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:45,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:29:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72109454] [2023-12-21 14:29:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:45,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:29:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:29:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:29:45,872 INFO L87 Difference]: Start difference. First operand 104190 states and 146069 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:47,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:47,150 INFO L93 Difference]: Finished difference Result 346493 states and 484739 transitions. [2023-12-21 14:29:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:29:47,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:47,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:47,923 INFO L225 Difference]: With dead ends: 346493 [2023-12-21 14:29:47,923 INFO L226 Difference]: Without dead ends: 290427 [2023-12-21 14:29:47,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:29:47,955 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 3388 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:47,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3388 Valid, 1429 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:29:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290427 states. [2023-12-21 14:29:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290427 to 150616. [2023-12-21 14:29:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150616 states, 150615 states have (on average 1.3985393221126714) internal successors, (210641), 150615 states have internal predecessors, (210641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150616 states to 150616 states and 210641 transitions. [2023-12-21 14:29:51,049 INFO L78 Accepts]: Start accepts. Automaton has 150616 states and 210641 transitions. Word has length 190 [2023-12-21 14:29:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:51,050 INFO L495 AbstractCegarLoop]: Abstraction has 150616 states and 210641 transitions. [2023-12-21 14:29:51,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 150616 states and 210641 transitions. [2023-12-21 14:29:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:51,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:51,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:51,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 14:29:51,063 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1414547185, now seen corresponding path program 1 times [2023-12-21 14:29:51,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:51,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437121342] [2023-12-21 14:29:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:51,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437121342] [2023-12-21 14:29:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437121342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:29:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39762779] [2023-12-21 14:29:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:29:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:29:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:29:51,450 INFO L87 Difference]: Start difference. First operand 150616 states and 210641 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:52,115 INFO L93 Difference]: Finished difference Result 223593 states and 315488 transitions. [2023-12-21 14:29:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:29:52,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:52,384 INFO L225 Difference]: With dead ends: 223593 [2023-12-21 14:29:52,384 INFO L226 Difference]: Without dead ends: 166699 [2023-12-21 14:29:52,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:29:52,461 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 937 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:52,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1539 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:29:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166699 states. [2023-12-21 14:29:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166699 to 136471. [2023-12-21 14:29:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136471 states, 136470 states have (on average 1.3913167729171247) internal successors, (189873), 136470 states have internal predecessors, (189873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136471 states to 136471 states and 189873 transitions. [2023-12-21 14:29:54,627 INFO L78 Accepts]: Start accepts. Automaton has 136471 states and 189873 transitions. Word has length 190 [2023-12-21 14:29:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:54,627 INFO L495 AbstractCegarLoop]: Abstraction has 136471 states and 189873 transitions. [2023-12-21 14:29:54,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 136471 states and 189873 transitions. [2023-12-21 14:29:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:54,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:54,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-21 14:29:54,639 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:54,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 769667743, now seen corresponding path program 1 times [2023-12-21 14:29:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:54,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025577964] [2023-12-21 14:29:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:54,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025577964] [2023-12-21 14:29:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025577964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:29:54,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419996011] [2023-12-21 14:29:54,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:54,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:29:54,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:29:54,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:29:54,743 INFO L87 Difference]: Start difference. First operand 136471 states and 189873 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:55,550 INFO L93 Difference]: Finished difference Result 196662 states and 275959 transitions. [2023-12-21 14:29:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:29:55,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:55,775 INFO L225 Difference]: With dead ends: 196662 [2023-12-21 14:29:55,775 INFO L226 Difference]: Without dead ends: 139794 [2023-12-21 14:29:55,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:29:55,838 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 907 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:55,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1365 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:29:55,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139794 states. [2023-12-21 14:29:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139794 to 108109. [2023-12-21 14:29:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108109 states, 108108 states have (on average 1.374098124098124) internal successors, (148551), 108108 states have internal predecessors, (148551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108109 states to 108109 states and 148551 transitions. [2023-12-21 14:29:57,593 INFO L78 Accepts]: Start accepts. Automaton has 108109 states and 148551 transitions. Word has length 190 [2023-12-21 14:29:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:29:57,593 INFO L495 AbstractCegarLoop]: Abstraction has 108109 states and 148551 transitions. [2023-12-21 14:29:57,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 108109 states and 148551 transitions. [2023-12-21 14:29:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:29:57,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:29:57,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:29:57,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 14:29:57,607 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:29:57,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:29:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash 291652310, now seen corresponding path program 1 times [2023-12-21 14:29:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:29:57,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535174923] [2023-12-21 14:29:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:29:57,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:29:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:29:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:29:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:29:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535174923] [2023-12-21 14:29:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535174923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:29:57,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:29:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:29:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031364757] [2023-12-21 14:29:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:29:57,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:29:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:29:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:29:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:29:57,721 INFO L87 Difference]: Start difference. First operand 108109 states and 148551 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:29:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:29:59,294 INFO L93 Difference]: Finished difference Result 307724 states and 419577 transitions. [2023-12-21 14:29:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:29:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:29:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:29:59,710 INFO L225 Difference]: With dead ends: 307724 [2023-12-21 14:29:59,710 INFO L226 Difference]: Without dead ends: 250614 [2023-12-21 14:29:59,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:29:59,741 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 3466 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3466 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:29:59,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3466 Valid, 1573 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:29:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250614 states. [2023-12-21 14:30:01,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250614 to 156387. [2023-12-21 14:30:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156387 states, 156386 states have (on average 1.3699244177867584) internal successors, (214237), 156386 states have internal predecessors, (214237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156387 states to 156387 states and 214237 transitions. [2023-12-21 14:30:02,301 INFO L78 Accepts]: Start accepts. Automaton has 156387 states and 214237 transitions. Word has length 190 [2023-12-21 14:30:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:02,301 INFO L495 AbstractCegarLoop]: Abstraction has 156387 states and 214237 transitions. [2023-12-21 14:30:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 156387 states and 214237 transitions. [2023-12-21 14:30:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:30:02,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:02,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:02,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-21 14:30:02,315 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:02,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1760367063, now seen corresponding path program 1 times [2023-12-21 14:30:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164361669] [2023-12-21 14:30:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:02,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164361669] [2023-12-21 14:30:02,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164361669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:02,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:02,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:30:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104624983] [2023-12-21 14:30:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:30:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:30:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:30:02,691 INFO L87 Difference]: Start difference. First operand 156387 states and 214237 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:04,181 INFO L93 Difference]: Finished difference Result 404383 states and 554649 transitions. [2023-12-21 14:30:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:30:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:30:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:04,830 INFO L225 Difference]: With dead ends: 404383 [2023-12-21 14:30:04,830 INFO L226 Difference]: Without dead ends: 330295 [2023-12-21 14:30:04,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:30:04,933 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 3259 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:04,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 1389 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:30:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330295 states. [2023-12-21 14:30:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330295 to 177962. [2023-12-21 14:30:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177962 states, 177961 states have (on average 1.3766724169902393) internal successors, (244994), 177961 states have internal predecessors, (244994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177962 states to 177962 states and 244994 transitions. [2023-12-21 14:30:08,668 INFO L78 Accepts]: Start accepts. Automaton has 177962 states and 244994 transitions. Word has length 190 [2023-12-21 14:30:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:08,668 INFO L495 AbstractCegarLoop]: Abstraction has 177962 states and 244994 transitions. [2023-12-21 14:30:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 177962 states and 244994 transitions. [2023-12-21 14:30:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:30:08,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:08,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:08,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-21 14:30:08,684 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:08,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -121542908, now seen corresponding path program 1 times [2023-12-21 14:30:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068041563] [2023-12-21 14:30:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:09,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068041563] [2023-12-21 14:30:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068041563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:30:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051509255] [2023-12-21 14:30:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:09,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:30:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:30:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:30:09,069 INFO L87 Difference]: Start difference. First operand 177962 states and 244994 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:10,573 INFO L93 Difference]: Finished difference Result 398712 states and 546897 transitions. [2023-12-21 14:30:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:30:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:30:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:11,221 INFO L225 Difference]: With dead ends: 398712 [2023-12-21 14:30:11,221 INFO L226 Difference]: Without dead ends: 323035 [2023-12-21 14:30:11,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:30:11,328 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 3672 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:11,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3672 Valid, 1468 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:30:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323035 states. [2023-12-21 14:30:14,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323035 to 249738. [2023-12-21 14:30:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249738 states, 249737 states have (on average 1.3631980843847729) internal successors, (340441), 249737 states have internal predecessors, (340441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249738 states to 249738 states and 340441 transitions. [2023-12-21 14:30:15,575 INFO L78 Accepts]: Start accepts. Automaton has 249738 states and 340441 transitions. Word has length 190 [2023-12-21 14:30:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 249738 states and 340441 transitions. [2023-12-21 14:30:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 249738 states and 340441 transitions. [2023-12-21 14:30:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-21 14:30:15,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:15,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:15,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-21 14:30:15,592 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:15,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash -783496431, now seen corresponding path program 1 times [2023-12-21 14:30:15,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:15,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898048979] [2023-12-21 14:30:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:15,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898048979] [2023-12-21 14:30:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898048979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:15,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:30:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054691749] [2023-12-21 14:30:15,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:15,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:30:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:30:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:30:15,753 INFO L87 Difference]: Start difference. First operand 249738 states and 340441 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:18,339 INFO L93 Difference]: Finished difference Result 708829 states and 966359 transitions. [2023-12-21 14:30:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 14:30:18,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-12-21 14:30:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:19,987 INFO L225 Difference]: With dead ends: 708829 [2023-12-21 14:30:19,988 INFO L226 Difference]: Without dead ends: 576586 [2023-12-21 14:30:20,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:30:20,147 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 3301 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:20,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 1214 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:30:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576586 states. [2023-12-21 14:30:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576586 to 290484. [2023-12-21 14:30:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290484 states, 290483 states have (on average 1.3691644605708424) internal successors, (397719), 290483 states have internal predecessors, (397719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290484 states to 290484 states and 397719 transitions. [2023-12-21 14:30:26,139 INFO L78 Accepts]: Start accepts. Automaton has 290484 states and 397719 transitions. Word has length 190 [2023-12-21 14:30:26,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:26,139 INFO L495 AbstractCegarLoop]: Abstraction has 290484 states and 397719 transitions. [2023-12-21 14:30:26,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 290484 states and 397719 transitions. [2023-12-21 14:30:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:30:26,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:26,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:26,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-21 14:30:26,155 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:26,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1493897342, now seen corresponding path program 1 times [2023-12-21 14:30:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909169695] [2023-12-21 14:30:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909169695] [2023-12-21 14:30:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909169695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:27,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 14:30:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175770325] [2023-12-21 14:30:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 14:30:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 14:30:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:30:27,127 INFO L87 Difference]: Start difference. First operand 290484 states and 397719 transitions. Second operand has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:30,743 INFO L93 Difference]: Finished difference Result 320020 states and 438665 transitions. [2023-12-21 14:30:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 14:30:30,744 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:30:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:31,500 INFO L225 Difference]: With dead ends: 320020 [2023-12-21 14:30:31,500 INFO L226 Difference]: Without dead ends: 292086 [2023-12-21 14:30:31,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=648, Invalid=3134, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 14:30:31,530 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 2583 mSDsluCounter, 9655 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 10429 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:31,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2583 Valid, 10429 Invalid, 3085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 14:30:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292086 states. [2023-12-21 14:30:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292086 to 290999. [2023-12-21 14:30:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290999 states, 290998 states have (on average 1.3685832892322285) internal successors, (398255), 290998 states have internal predecessors, (398255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290999 states to 290999 states and 398255 transitions. [2023-12-21 14:30:35,427 INFO L78 Accepts]: Start accepts. Automaton has 290999 states and 398255 transitions. Word has length 192 [2023-12-21 14:30:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:35,427 INFO L495 AbstractCegarLoop]: Abstraction has 290999 states and 398255 transitions. [2023-12-21 14:30:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 18 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 290999 states and 398255 transitions. [2023-12-21 14:30:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:30:35,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:35,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:35,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-21 14:30:35,445 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:35,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1208882238, now seen corresponding path program 1 times [2023-12-21 14:30:35,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:35,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857640195] [2023-12-21 14:30:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857640195] [2023-12-21 14:30:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857640195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:36,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-21 14:30:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128382348] [2023-12-21 14:30:36,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:36,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 14:30:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:36,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 14:30:36,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-12-21 14:30:36,865 INFO L87 Difference]: Start difference. First operand 290999 states and 398255 transitions. Second operand has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:41,952 INFO L93 Difference]: Finished difference Result 305741 states and 418489 transitions. [2023-12-21 14:30:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 14:30:41,953 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:30:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:42,427 INFO L225 Difference]: With dead ends: 305741 [2023-12-21 14:30:42,428 INFO L226 Difference]: Without dead ends: 279279 [2023-12-21 14:30:42,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=716, Invalid=2364, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 14:30:42,460 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 3623 mSDsluCounter, 11937 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 12782 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:42,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3623 Valid, 12782 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 14:30:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279279 states. [2023-12-21 14:30:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279279 to 278658. [2023-12-21 14:30:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278658 states, 278657 states have (on average 1.365054529403532) internal successors, (380382), 278657 states have internal predecessors, (380382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278658 states to 278658 states and 380382 transitions. [2023-12-21 14:30:46,650 INFO L78 Accepts]: Start accepts. Automaton has 278658 states and 380382 transitions. Word has length 192 [2023-12-21 14:30:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:46,650 INFO L495 AbstractCegarLoop]: Abstraction has 278658 states and 380382 transitions. [2023-12-21 14:30:46,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 278658 states and 380382 transitions. [2023-12-21 14:30:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:30:46,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:46,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:46,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-21 14:30:46,670 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:46,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1609517724, now seen corresponding path program 1 times [2023-12-21 14:30:46,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:46,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659979790] [2023-12-21 14:30:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:46,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:48,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:48,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659979790] [2023-12-21 14:30:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659979790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:48,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:48,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-21 14:30:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409989540] [2023-12-21 14:30:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:48,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 14:30:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:48,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 14:30:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2023-12-21 14:30:48,282 INFO L87 Difference]: Start difference. First operand 278658 states and 380382 transitions. Second operand has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:53,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:30:53,515 INFO L93 Difference]: Finished difference Result 326342 states and 448121 transitions. [2023-12-21 14:30:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 14:30:53,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:30:53,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:30:54,026 INFO L225 Difference]: With dead ends: 326342 [2023-12-21 14:30:54,026 INFO L226 Difference]: Without dead ends: 279620 [2023-12-21 14:30:54,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=831, Invalid=3201, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 14:30:54,099 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 4122 mSDsluCounter, 9879 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 10609 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:30:54,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 10609 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 14:30:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279620 states. [2023-12-21 14:30:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279620 to 279198. [2023-12-21 14:30:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279198 states, 279197 states have (on average 1.3644917388080817) internal successors, (380962), 279197 states have internal predecessors, (380962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279198 states to 279198 states and 380962 transitions. [2023-12-21 14:30:58,190 INFO L78 Accepts]: Start accepts. Automaton has 279198 states and 380962 transitions. Word has length 192 [2023-12-21 14:30:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:30:58,190 INFO L495 AbstractCegarLoop]: Abstraction has 279198 states and 380962 transitions. [2023-12-21 14:30:58,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.0) internal successors, (192), 23 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:30:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 279198 states and 380962 transitions. [2023-12-21 14:30:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:30:58,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:30:58,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:30:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-21 14:30:58,209 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:30:58,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:30:58,209 INFO L85 PathProgramCache]: Analyzing trace with hash 647727038, now seen corresponding path program 1 times [2023-12-21 14:30:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:30:58,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187706341] [2023-12-21 14:30:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:30:58,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:30:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:30:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:30:59,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:30:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187706341] [2023-12-21 14:30:59,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187706341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:30:59,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:30:59,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 14:30:59,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466261158] [2023-12-21 14:30:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:30:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 14:30:59,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:30:59,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 14:30:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2023-12-21 14:30:59,277 INFO L87 Difference]: Start difference. First operand 279198 states and 380962 transitions. Second operand has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 17 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:01,682 INFO L93 Difference]: Finished difference Result 325568 states and 444768 transitions. [2023-12-21 14:31:01,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 14:31:01,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 17 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:31:01,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:02,428 INFO L225 Difference]: With dead ends: 325568 [2023-12-21 14:31:02,428 INFO L226 Difference]: Without dead ends: 249880 [2023-12-21 14:31:02,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 14:31:02,462 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1436 mSDsluCounter, 8708 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 9390 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:02,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 9390 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 14:31:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249880 states. [2023-12-21 14:31:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249880 to 249580. [2023-12-21 14:31:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249580 states, 249579 states have (on average 1.3545250201339054) internal successors, (338061), 249579 states have internal predecessors, (338061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249580 states to 249580 states and 338061 transitions. [2023-12-21 14:31:05,865 INFO L78 Accepts]: Start accepts. Automaton has 249580 states and 338061 transitions. Word has length 192 [2023-12-21 14:31:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:05,865 INFO L495 AbstractCegarLoop]: Abstraction has 249580 states and 338061 transitions. [2023-12-21 14:31:05,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.666666666666666) internal successors, (192), 17 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 249580 states and 338061 transitions. [2023-12-21 14:31:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:31:05,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:05,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:05,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-21 14:31:05,883 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:05,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:05,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2069169258, now seen corresponding path program 1 times [2023-12-21 14:31:05,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:05,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607993773] [2023-12-21 14:31:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:05,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607993773] [2023-12-21 14:31:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607993773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:05,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:31:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647580332] [2023-12-21 14:31:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:05,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:31:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:31:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:31:05,936 INFO L87 Difference]: Start difference. First operand 249580 states and 338061 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:08,031 INFO L93 Difference]: Finished difference Result 533317 states and 730564 transitions. [2023-12-21 14:31:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:31:08,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:31:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:08,654 INFO L225 Difference]: With dead ends: 533317 [2023-12-21 14:31:08,654 INFO L226 Difference]: Without dead ends: 306498 [2023-12-21 14:31:08,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:31:08,761 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 123 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:08,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 752 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:31:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306498 states. [2023-12-21 14:31:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306498 to 247896. [2023-12-21 14:31:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247896 states, 247895 states have (on average 1.3021521208576212) internal successors, (322797), 247895 states have internal predecessors, (322797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247896 states to 247896 states and 322797 transitions. [2023-12-21 14:31:12,601 INFO L78 Accepts]: Start accepts. Automaton has 247896 states and 322797 transitions. Word has length 192 [2023-12-21 14:31:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:12,601 INFO L495 AbstractCegarLoop]: Abstraction has 247896 states and 322797 transitions. [2023-12-21 14:31:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 247896 states and 322797 transitions. [2023-12-21 14:31:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:31:12,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:12,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-21 14:31:12,624 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2055270432, now seen corresponding path program 1 times [2023-12-21 14:31:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787818197] [2023-12-21 14:31:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:14,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:14,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787818197] [2023-12-21 14:31:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787818197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:14,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:14,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 14:31:14,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646466237] [2023-12-21 14:31:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:14,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:31:14,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:31:14,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:31:14,039 INFO L87 Difference]: Start difference. First operand 247896 states and 322797 transitions. Second operand has 20 states, 20 states have (on average 9.6) internal successors, (192), 19 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:17,516 INFO L93 Difference]: Finished difference Result 282264 states and 368267 transitions. [2023-12-21 14:31:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 14:31:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.6) internal successors, (192), 19 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:31:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:17,941 INFO L225 Difference]: With dead ends: 282264 [2023-12-21 14:31:17,941 INFO L226 Difference]: Without dead ends: 248740 [2023-12-21 14:31:17,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=545, Invalid=2107, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 14:31:17,992 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 3001 mSDsluCounter, 11351 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3001 SdHoareTripleChecker+Valid, 12195 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:17,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3001 Valid, 12195 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2958 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 14:31:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248740 states. [2023-12-21 14:31:20,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248740 to 248289. [2023-12-21 14:31:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248289 states, 248288 states have (on average 1.3016980280964041) internal successors, (323196), 248288 states have internal predecessors, (323196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248289 states to 248289 states and 323196 transitions. [2023-12-21 14:31:21,394 INFO L78 Accepts]: Start accepts. Automaton has 248289 states and 323196 transitions. Word has length 192 [2023-12-21 14:31:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:21,395 INFO L495 AbstractCegarLoop]: Abstraction has 248289 states and 323196 transitions. [2023-12-21 14:31:21,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.6) internal successors, (192), 19 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 248289 states and 323196 transitions. [2023-12-21 14:31:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 14:31:21,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:21,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-21 14:31:21,410 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:21,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash -768811372, now seen corresponding path program 1 times [2023-12-21 14:31:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836054066] [2023-12-21 14:31:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:22,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:22,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836054066] [2023-12-21 14:31:22,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836054066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:22,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:22,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-21 14:31:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233582302] [2023-12-21 14:31:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:22,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 14:31:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:22,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 14:31:22,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-21 14:31:22,846 INFO L87 Difference]: Start difference. First operand 248289 states and 323196 transitions. Second operand has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:27,910 INFO L93 Difference]: Finished difference Result 265568 states and 345847 transitions. [2023-12-21 14:31:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 14:31:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-12-21 14:31:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:28,302 INFO L225 Difference]: With dead ends: 265568 [2023-12-21 14:31:28,302 INFO L226 Difference]: Without dead ends: 233318 [2023-12-21 14:31:28,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=635, Invalid=2335, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 14:31:28,374 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 2209 mSDsluCounter, 14966 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 16002 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:28,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 16002 Invalid, 4029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 14:31:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233318 states. [2023-12-21 14:31:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233318 to 233147. [2023-12-21 14:31:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233147 states, 233146 states have (on average 1.297860568056068) internal successors, (302591), 233146 states have internal predecessors, (302591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233147 states to 233147 states and 302591 transitions. [2023-12-21 14:31:31,776 INFO L78 Accepts]: Start accepts. Automaton has 233147 states and 302591 transitions. Word has length 192 [2023-12-21 14:31:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:31,776 INFO L495 AbstractCegarLoop]: Abstraction has 233147 states and 302591 transitions. [2023-12-21 14:31:31,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 22 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 233147 states and 302591 transitions. [2023-12-21 14:31:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:31:31,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:31,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:31,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-21 14:31:31,792 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 895738255, now seen corresponding path program 1 times [2023-12-21 14:31:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294800311] [2023-12-21 14:31:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:31,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294800311] [2023-12-21 14:31:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294800311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:31:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818694306] [2023-12-21 14:31:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:31:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:31:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:31:32,692 INFO L87 Difference]: Start difference. First operand 233147 states and 302591 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:35,682 INFO L93 Difference]: Finished difference Result 394440 states and 518644 transitions. [2023-12-21 14:31:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 14:31:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:31:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:36,379 INFO L225 Difference]: With dead ends: 394440 [2023-12-21 14:31:36,380 INFO L226 Difference]: Without dead ends: 373524 [2023-12-21 14:31:36,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=1479, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 14:31:36,787 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 4998 mSDsluCounter, 7263 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4998 SdHoareTripleChecker+Valid, 7847 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:36,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4998 Valid, 7847 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 14:31:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373524 states. [2023-12-21 14:31:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373524 to 233511. [2023-12-21 14:31:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233511 states, 233510 states have (on average 1.2974733416127788) internal successors, (302973), 233510 states have internal predecessors, (302973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233511 states to 233511 states and 302973 transitions. [2023-12-21 14:31:40,556 INFO L78 Accepts]: Start accepts. Automaton has 233511 states and 302973 transitions. Word has length 193 [2023-12-21 14:31:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:40,556 INFO L495 AbstractCegarLoop]: Abstraction has 233511 states and 302973 transitions. [2023-12-21 14:31:40,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 233511 states and 302973 transitions. [2023-12-21 14:31:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:31:40,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:40,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-21 14:31:40,574 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:40,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1058090299, now seen corresponding path program 1 times [2023-12-21 14:31:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296388703] [2023-12-21 14:31:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:41,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:41,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296388703] [2023-12-21 14:31:41,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296388703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:41,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:41,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:31:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833807259] [2023-12-21 14:31:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:41,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:31:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:31:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:31:41,629 INFO L87 Difference]: Start difference. First operand 233511 states and 302973 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:44,665 INFO L93 Difference]: Finished difference Result 366640 states and 480602 transitions. [2023-12-21 14:31:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 14:31:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:31:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:45,537 INFO L225 Difference]: With dead ends: 366640 [2023-12-21 14:31:45,537 INFO L226 Difference]: Without dead ends: 345527 [2023-12-21 14:31:45,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=393, Invalid=1413, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 14:31:45,578 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 5459 mSDsluCounter, 8327 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5459 SdHoareTripleChecker+Valid, 9041 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5459 Valid, 9041 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 14:31:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345527 states. [2023-12-21 14:31:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345527 to 233746. [2023-12-21 14:31:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233746 states, 233745 states have (on average 1.2971614366082698) internal successors, (303205), 233745 states have internal predecessors, (303205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233746 states to 233746 states and 303205 transitions. [2023-12-21 14:31:49,632 INFO L78 Accepts]: Start accepts. Automaton has 233746 states and 303205 transitions. Word has length 193 [2023-12-21 14:31:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:49,632 INFO L495 AbstractCegarLoop]: Abstraction has 233746 states and 303205 transitions. [2023-12-21 14:31:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 233746 states and 303205 transitions. [2023-12-21 14:31:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:31:49,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:49,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:49,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-21 14:31:49,668 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:49,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1550102518, now seen corresponding path program 1 times [2023-12-21 14:31:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645146950] [2023-12-21 14:31:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:49,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645146950] [2023-12-21 14:31:49,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645146950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:49,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:49,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:31:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086382872] [2023-12-21 14:31:49,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:49,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:31:49,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:31:49,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:31:49,826 INFO L87 Difference]: Start difference. First operand 233746 states and 303205 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:51,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:51,073 INFO L93 Difference]: Finished difference Result 417496 states and 544252 transitions. [2023-12-21 14:31:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:31:51,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:31:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:52,265 INFO L225 Difference]: With dead ends: 417496 [2023-12-21 14:31:52,265 INFO L226 Difference]: Without dead ends: 417494 [2023-12-21 14:31:52,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:31:52,316 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 624 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:52,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2234 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:31:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417494 states. [2023-12-21 14:31:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417494 to 233908. [2023-12-21 14:31:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233908 states, 233907 states have (on average 1.2969556276639862) internal successors, (303367), 233907 states have internal predecessors, (303367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233908 states to 233908 states and 303367 transitions. [2023-12-21 14:31:56,502 INFO L78 Accepts]: Start accepts. Automaton has 233908 states and 303367 transitions. Word has length 193 [2023-12-21 14:31:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:31:56,502 INFO L495 AbstractCegarLoop]: Abstraction has 233908 states and 303367 transitions. [2023-12-21 14:31:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 233908 states and 303367 transitions. [2023-12-21 14:31:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:31:56,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:31:56,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:31:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-21 14:31:56,520 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:31:56,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:31:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1548255476, now seen corresponding path program 1 times [2023-12-21 14:31:56,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:31:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128184609] [2023-12-21 14:31:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:31:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:31:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:31:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:31:56,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:31:56,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128184609] [2023-12-21 14:31:56,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128184609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:31:56,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:31:56,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:31:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608289797] [2023-12-21 14:31:56,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:31:56,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:31:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:31:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:31:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:31:56,642 INFO L87 Difference]: Start difference. First operand 233908 states and 303367 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:31:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:31:57,707 INFO L93 Difference]: Finished difference Result 358757 states and 467514 transitions. [2023-12-21 14:31:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:31:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:31:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:31:58,505 INFO L225 Difference]: With dead ends: 358757 [2023-12-21 14:31:58,505 INFO L226 Difference]: Without dead ends: 275507 [2023-12-21 14:31:58,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:31:58,537 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 248 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:31:58,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1441 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:31:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275507 states. [2023-12-21 14:32:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275507 to 275292. [2023-12-21 14:32:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275292 states, 275291 states have (on average 1.296079421412251) internal successors, (356799), 275291 states have internal predecessors, (356799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275292 states to 275292 states and 356799 transitions. [2023-12-21 14:32:02,021 INFO L78 Accepts]: Start accepts. Automaton has 275292 states and 356799 transitions. Word has length 193 [2023-12-21 14:32:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:02,022 INFO L495 AbstractCegarLoop]: Abstraction has 275292 states and 356799 transitions. [2023-12-21 14:32:02,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 275292 states and 356799 transitions. [2023-12-21 14:32:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:02,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:02,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:02,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-21 14:32:02,039 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:02,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1037339291, now seen corresponding path program 1 times [2023-12-21 14:32:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204014314] [2023-12-21 14:32:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:02,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204014314] [2023-12-21 14:32:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204014314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:02,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:32:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236577743] [2023-12-21 14:32:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:32:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:32:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:32:02,141 INFO L87 Difference]: Start difference. First operand 275292 states and 356799 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:04,005 INFO L93 Difference]: Finished difference Result 550619 states and 721998 transitions. [2023-12-21 14:32:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:32:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:04,778 INFO L225 Difference]: With dead ends: 550619 [2023-12-21 14:32:04,778 INFO L226 Difference]: Without dead ends: 388700 [2023-12-21 14:32:05,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:05,233 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 347 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:05,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1311 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:32:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388700 states. [2023-12-21 14:32:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388700 to 272235. [2023-12-21 14:32:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272235 states, 272234 states have (on average 1.2985776941895575) internal successors, (353517), 272234 states have internal predecessors, (353517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272235 states to 272235 states and 353517 transitions. [2023-12-21 14:32:10,009 INFO L78 Accepts]: Start accepts. Automaton has 272235 states and 353517 transitions. Word has length 193 [2023-12-21 14:32:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:10,010 INFO L495 AbstractCegarLoop]: Abstraction has 272235 states and 353517 transitions. [2023-12-21 14:32:10,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 272235 states and 353517 transitions. [2023-12-21 14:32:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:10,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:10,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-21 14:32:10,048 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:10,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash 556176695, now seen corresponding path program 1 times [2023-12-21 14:32:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009676589] [2023-12-21 14:32:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:11,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009676589] [2023-12-21 14:32:11,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009676589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:11,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:11,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:32:11,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834158148] [2023-12-21 14:32:11,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:11,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:32:11,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:11,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:32:11,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:32:11,041 INFO L87 Difference]: Start difference. First operand 272235 states and 353517 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:14,506 INFO L93 Difference]: Finished difference Result 397702 states and 520742 transitions. [2023-12-21 14:32:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 14:32:14,507 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:15,144 INFO L225 Difference]: With dead ends: 397702 [2023-12-21 14:32:15,144 INFO L226 Difference]: Without dead ends: 376380 [2023-12-21 14:32:15,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=390, Invalid=1416, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 14:32:15,204 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 5181 mSDsluCounter, 7568 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 8179 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:15,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 8179 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 14:32:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376380 states. [2023-12-21 14:32:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376380 to 272888. [2023-12-21 14:32:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272888 states, 272887 states have (on average 1.2978558890676362) internal successors, (354168), 272887 states have internal predecessors, (354168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272888 states to 272888 states and 354168 transitions. [2023-12-21 14:32:19,381 INFO L78 Accepts]: Start accepts. Automaton has 272888 states and 354168 transitions. Word has length 193 [2023-12-21 14:32:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:19,382 INFO L495 AbstractCegarLoop]: Abstraction has 272888 states and 354168 transitions. [2023-12-21 14:32:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 272888 states and 354168 transitions. [2023-12-21 14:32:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:19,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:19,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:19,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-21 14:32:19,396 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:19,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash -725752998, now seen corresponding path program 1 times [2023-12-21 14:32:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754687978] [2023-12-21 14:32:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:19,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:19,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754687978] [2023-12-21 14:32:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754687978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:19,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:19,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:32:19,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417743549] [2023-12-21 14:32:19,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:32:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:32:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:32:19,502 INFO L87 Difference]: Start difference. First operand 272888 states and 354168 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:21,534 INFO L93 Difference]: Finished difference Result 562509 states and 738009 transitions. [2023-12-21 14:32:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:32:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:22,661 INFO L225 Difference]: With dead ends: 562509 [2023-12-21 14:32:22,661 INFO L226 Difference]: Without dead ends: 372468 [2023-12-21 14:32:22,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:22,780 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 339 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:22,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 1380 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:32:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372468 states. [2023-12-21 14:32:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372468 to 270306. [2023-12-21 14:32:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270306 states, 270305 states have (on average 1.2998020754333068) internal successors, (351343), 270305 states have internal predecessors, (351343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270306 states to 270306 states and 351343 transitions. [2023-12-21 14:32:27,149 INFO L78 Accepts]: Start accepts. Automaton has 270306 states and 351343 transitions. Word has length 193 [2023-12-21 14:32:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:27,149 INFO L495 AbstractCegarLoop]: Abstraction has 270306 states and 351343 transitions. [2023-12-21 14:32:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 270306 states and 351343 transitions. [2023-12-21 14:32:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:27,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:27,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:27,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-12-21 14:32:27,165 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -941669631, now seen corresponding path program 1 times [2023-12-21 14:32:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141315253] [2023-12-21 14:32:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141315253] [2023-12-21 14:32:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141315253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:27,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:27,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:32:27,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162538045] [2023-12-21 14:32:27,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:27,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:32:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:27,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:32:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:27,279 INFO L87 Difference]: Start difference. First operand 270306 states and 351343 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:29,020 INFO L93 Difference]: Finished difference Result 394834 states and 515169 transitions. [2023-12-21 14:32:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:32:29,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:29,844 INFO L225 Difference]: With dead ends: 394834 [2023-12-21 14:32:29,844 INFO L226 Difference]: Without dead ends: 311584 [2023-12-21 14:32:29,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:29,976 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 211 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:29,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1348 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:32:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311584 states. [2023-12-21 14:32:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311584 to 311261. [2023-12-21 14:32:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311261 states, 311260 states have (on average 1.299061877530039) internal successors, (404346), 311260 states have internal predecessors, (404346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311261 states to 311261 states and 404346 transitions. [2023-12-21 14:32:34,315 INFO L78 Accepts]: Start accepts. Automaton has 311261 states and 404346 transitions. Word has length 193 [2023-12-21 14:32:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:34,315 INFO L495 AbstractCegarLoop]: Abstraction has 311261 states and 404346 transitions. [2023-12-21 14:32:34,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 311261 states and 404346 transitions. [2023-12-21 14:32:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:34,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:34,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:34,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-12-21 14:32:34,332 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:34,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 694964475, now seen corresponding path program 1 times [2023-12-21 14:32:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071657204] [2023-12-21 14:32:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071657204] [2023-12-21 14:32:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071657204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:34,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:32:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564906263] [2023-12-21 14:32:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:32:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:32:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:32:34,426 INFO L87 Difference]: Start difference. First operand 311261 states and 404346 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:37,032 INFO L93 Difference]: Finished difference Result 682129 states and 893676 transitions. [2023-12-21 14:32:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:32:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:37,987 INFO L225 Difference]: With dead ends: 682129 [2023-12-21 14:32:37,987 INFO L226 Difference]: Without dead ends: 450393 [2023-12-21 14:32:38,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:38,142 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 360 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:38,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1536 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:32:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450393 states. [2023-12-21 14:32:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450393 to 307486. [2023-12-21 14:32:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307486 states, 307485 states have (on average 1.30204725433761) internal successors, (400360), 307485 states have internal predecessors, (400360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307486 states to 307486 states and 400360 transitions. [2023-12-21 14:32:43,063 INFO L78 Accepts]: Start accepts. Automaton has 307486 states and 400360 transitions. Word has length 193 [2023-12-21 14:32:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:43,063 INFO L495 AbstractCegarLoop]: Abstraction has 307486 states and 400360 transitions. [2023-12-21 14:32:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 307486 states and 400360 transitions. [2023-12-21 14:32:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:43,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:43,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:43,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-12-21 14:32:43,075 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:43,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash 250716017, now seen corresponding path program 1 times [2023-12-21 14:32:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:43,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678180221] [2023-12-21 14:32:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678180221] [2023-12-21 14:32:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678180221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:32:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901273605] [2023-12-21 14:32:43,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:43,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:32:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:32:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:43,464 INFO L87 Difference]: Start difference. First operand 307486 states and 400360 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:44,869 INFO L93 Difference]: Finished difference Result 432335 states and 564507 transitions. [2023-12-21 14:32:44,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:32:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:45,479 INFO L225 Difference]: With dead ends: 432335 [2023-12-21 14:32:45,479 INFO L226 Difference]: Without dead ends: 349085 [2023-12-21 14:32:45,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:32:45,552 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 347 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:45,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1189 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:32:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349085 states. [2023-12-21 14:32:49,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349085 to 348745. [2023-12-21 14:32:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348745 states, 348744 states have (on average 1.300859656366848) internal successors, (453667), 348744 states have internal predecessors, (453667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348745 states to 348745 states and 453667 transitions. [2023-12-21 14:32:51,002 INFO L78 Accepts]: Start accepts. Automaton has 348745 states and 453667 transitions. Word has length 193 [2023-12-21 14:32:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:32:51,002 INFO L495 AbstractCegarLoop]: Abstraction has 348745 states and 453667 transitions. [2023-12-21 14:32:51,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 348745 states and 453667 transitions. [2023-12-21 14:32:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:32:51,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:32:51,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:32:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-12-21 14:32:51,016 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:32:51,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:32:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -828900682, now seen corresponding path program 1 times [2023-12-21 14:32:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:32:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441758441] [2023-12-21 14:32:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:32:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:32:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:32:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:32:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:32:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441758441] [2023-12-21 14:32:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441758441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:32:52,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:32:52,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:32:52,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339304715] [2023-12-21 14:32:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:32:52,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:32:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:32:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:32:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:32:52,034 INFO L87 Difference]: Start difference. First operand 348745 states and 453667 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:32:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:32:56,121 INFO L93 Difference]: Finished difference Result 483295 states and 633140 transitions. [2023-12-21 14:32:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 14:32:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:32:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:32:57,121 INFO L225 Difference]: With dead ends: 483295 [2023-12-21 14:32:57,121 INFO L226 Difference]: Without dead ends: 462079 [2023-12-21 14:32:57,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=375, Invalid=1347, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 14:32:57,224 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 4456 mSDsluCounter, 9619 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 10423 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:32:57,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 10423 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3024 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 14:32:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462079 states. [2023-12-21 14:33:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462079 to 349136. [2023-12-21 14:33:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349136 states, 349135 states have (on average 1.3004969424434674) internal successors, (454049), 349135 states have internal predecessors, (454049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349136 states to 349136 states and 454049 transitions. [2023-12-21 14:33:02,549 INFO L78 Accepts]: Start accepts. Automaton has 349136 states and 454049 transitions. Word has length 193 [2023-12-21 14:33:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:02,550 INFO L495 AbstractCegarLoop]: Abstraction has 349136 states and 454049 transitions. [2023-12-21 14:33:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 349136 states and 454049 transitions. [2023-12-21 14:33:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:33:02,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:02,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-12-21 14:33:02,563 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:02,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash 236927225, now seen corresponding path program 1 times [2023-12-21 14:33:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:02,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001889500] [2023-12-21 14:33:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:02,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001889500] [2023-12-21 14:33:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001889500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:33:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334099399] [2023-12-21 14:33:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:33:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:33:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:33:03,324 INFO L87 Difference]: Start difference. First operand 349136 states and 454049 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:08,177 INFO L93 Difference]: Finished difference Result 628703 states and 822115 transitions. [2023-12-21 14:33:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 14:33:08,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:33:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:33:09,404 INFO L225 Difference]: With dead ends: 628703 [2023-12-21 14:33:09,405 INFO L226 Difference]: Without dead ends: 607820 [2023-12-21 14:33:09,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=576, Invalid=1974, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 14:33:09,877 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 4487 mSDsluCounter, 11139 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4487 SdHoareTripleChecker+Valid, 12079 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:33:09,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4487 Valid, 12079 Invalid, 3716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 14:33:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607820 states. [2023-12-21 14:33:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607820 to 349806. [2023-12-21 14:33:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349806 states, 349805 states have (on average 1.2999528308629094) internal successors, (454730), 349805 states have internal predecessors, (454730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349806 states to 349806 states and 454730 transitions. [2023-12-21 14:33:16,046 INFO L78 Accepts]: Start accepts. Automaton has 349806 states and 454730 transitions. Word has length 193 [2023-12-21 14:33:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:16,046 INFO L495 AbstractCegarLoop]: Abstraction has 349806 states and 454730 transitions. [2023-12-21 14:33:16,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 349806 states and 454730 transitions. [2023-12-21 14:33:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-21 14:33:16,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:16,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-12-21 14:33:16,062 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:16,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1012503062, now seen corresponding path program 1 times [2023-12-21 14:33:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727336509] [2023-12-21 14:33:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:16,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:17,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727336509] [2023-12-21 14:33:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727336509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-21 14:33:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88913817] [2023-12-21 14:33:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:17,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 14:33:17,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 14:33:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-21 14:33:17,057 INFO L87 Difference]: Start difference. First operand 349806 states and 454730 transitions. Second operand has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:21,214 INFO L93 Difference]: Finished difference Result 577360 states and 756767 transitions. [2023-12-21 14:33:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 14:33:21,215 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-12-21 14:33:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:33:22,390 INFO L225 Difference]: With dead ends: 577360 [2023-12-21 14:33:22,391 INFO L226 Difference]: Without dead ends: 556513 [2023-12-21 14:33:22,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 14:33:22,533 INFO L413 NwaCegarLoop]: 828 mSDtfsCounter, 4174 mSDsluCounter, 9995 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 10823 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:33:22,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 10823 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 14:33:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556513 states. [2023-12-21 14:33:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556513 to 350532. [2023-12-21 14:33:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350532 states, 350531 states have (on average 1.299374377729787) internal successors, (455471), 350531 states have internal predecessors, (455471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350532 states to 350532 states and 455471 transitions. [2023-12-21 14:33:28,627 INFO L78 Accepts]: Start accepts. Automaton has 350532 states and 455471 transitions. Word has length 193 [2023-12-21 14:33:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:28,628 INFO L495 AbstractCegarLoop]: Abstraction has 350532 states and 455471 transitions. [2023-12-21 14:33:28,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.19047619047619) internal successors, (193), 21 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 350532 states and 455471 transitions. [2023-12-21 14:33:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 14:33:28,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:28,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:28,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-12-21 14:33:28,642 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:28,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1039416298, now seen corresponding path program 1 times [2023-12-21 14:33:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343935499] [2023-12-21 14:33:28,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:28,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343935499] [2023-12-21 14:33:28,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343935499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:28,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:28,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:33:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022439737] [2023-12-21 14:33:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:28,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:33:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:33:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:33:28,698 INFO L87 Difference]: Start difference. First operand 350532 states and 455471 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:30,186 INFO L93 Difference]: Finished difference Result 456980 states and 593793 transitions. [2023-12-21 14:33:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:33:30,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-21 14:33:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:33:31,203 INFO L225 Difference]: With dead ends: 456980 [2023-12-21 14:33:31,204 INFO L226 Difference]: Without dead ends: 349477 [2023-12-21 14:33:31,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:33:31,290 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 228 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:33:31,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1034 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:33:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349477 states. [2023-12-21 14:33:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349477 to 349344. [2023-12-21 14:33:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349344 states, 349343 states have (on average 1.2950853459207712) internal successors, (452429), 349343 states have internal predecessors, (452429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349344 states to 349344 states and 452429 transitions. [2023-12-21 14:33:36,161 INFO L78 Accepts]: Start accepts. Automaton has 349344 states and 452429 transitions. Word has length 195 [2023-12-21 14:33:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:36,161 INFO L495 AbstractCegarLoop]: Abstraction has 349344 states and 452429 transitions. [2023-12-21 14:33:36,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:36,161 INFO L276 IsEmpty]: Start isEmpty. Operand 349344 states and 452429 transitions. [2023-12-21 14:33:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 14:33:36,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:36,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:36,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-12-21 14:33:36,177 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:36,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash 965458835, now seen corresponding path program 1 times [2023-12-21 14:33:36,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:36,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189161901] [2023-12-21 14:33:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:36,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:37,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189161901] [2023-12-21 14:33:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189161901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:37,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:37,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 14:33:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099142809] [2023-12-21 14:33:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:37,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:33:37,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:33:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:33:37,041 INFO L87 Difference]: Start difference. First operand 349344 states and 452429 transitions. Second operand has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:39,599 INFO L93 Difference]: Finished difference Result 369077 states and 478966 transitions. [2023-12-21 14:33:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 14:33:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-21 14:33:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:33:40,185 INFO L225 Difference]: With dead ends: 369077 [2023-12-21 14:33:40,185 INFO L226 Difference]: Without dead ends: 347381 [2023-12-21 14:33:40,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 14:33:40,246 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 4376 mSDsluCounter, 5256 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 5714 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 14:33:40,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4376 Valid, 5714 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 14:33:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347381 states. [2023-12-21 14:33:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347381 to 346970. [2023-12-21 14:33:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346970 states, 346969 states have (on average 1.295478846813404) internal successors, (449491), 346969 states have internal predecessors, (449491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346970 states to 346970 states and 449491 transitions. [2023-12-21 14:33:44,937 INFO L78 Accepts]: Start accepts. Automaton has 346970 states and 449491 transitions. Word has length 196 [2023-12-21 14:33:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:44,937 INFO L495 AbstractCegarLoop]: Abstraction has 346970 states and 449491 transitions. [2023-12-21 14:33:44,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 346970 states and 449491 transitions. [2023-12-21 14:33:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 14:33:44,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:44,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-12-21 14:33:44,951 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:44,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash 435946458, now seen corresponding path program 1 times [2023-12-21 14:33:44,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:44,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805405605] [2023-12-21 14:33:44,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:44,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:45,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805405605] [2023-12-21 14:33:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805405605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:45,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:45,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 14:33:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291138886] [2023-12-21 14:33:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:45,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 14:33:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:45,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 14:33:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:33:45,787 INFO L87 Difference]: Start difference. First operand 346970 states and 449491 transitions. Second operand has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:48,752 INFO L93 Difference]: Finished difference Result 436964 states and 564524 transitions. [2023-12-21 14:33:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:33:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-21 14:33:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:33:49,578 INFO L225 Difference]: With dead ends: 436964 [2023-12-21 14:33:49,578 INFO L226 Difference]: Without dead ends: 414783 [2023-12-21 14:33:49,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=1103, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 14:33:49,656 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2926 mSDsluCounter, 7850 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 8564 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:33:49,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2926 Valid, 8564 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 14:33:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414783 states. [2023-12-21 14:33:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414783 to 344240. [2023-12-21 14:33:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344240 states, 344239 states have (on average 1.296163421343892) internal successors, (446190), 344239 states have internal predecessors, (446190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344240 states to 344240 states and 446190 transitions. [2023-12-21 14:33:55,014 INFO L78 Accepts]: Start accepts. Automaton has 344240 states and 446190 transitions. Word has length 196 [2023-12-21 14:33:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:33:55,014 INFO L495 AbstractCegarLoop]: Abstraction has 344240 states and 446190 transitions. [2023-12-21 14:33:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.8) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 344240 states and 446190 transitions. [2023-12-21 14:33:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:33:55,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:33:55,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:33:55,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-12-21 14:33:55,028 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:33:55,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:33:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash 99029424, now seen corresponding path program 1 times [2023-12-21 14:33:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:33:55,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796859123] [2023-12-21 14:33:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:33:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:33:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:33:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:33:55,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:33:55,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796859123] [2023-12-21 14:33:55,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796859123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:33:55,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:33:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 14:33:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755318844] [2023-12-21 14:33:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:33:55,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 14:33:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:33:55,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 14:33:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:33:55,632 INFO L87 Difference]: Start difference. First operand 344240 states and 446190 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:33:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:33:59,368 INFO L93 Difference]: Finished difference Result 591584 states and 772124 transitions. [2023-12-21 14:33:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 14:33:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:33:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:00,848 INFO L225 Difference]: With dead ends: 591584 [2023-12-21 14:34:00,848 INFO L226 Difference]: Without dead ends: 547813 [2023-12-21 14:34:00,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=902, Invalid=2880, Unknown=0, NotChecked=0, Total=3782 [2023-12-21 14:34:00,929 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 7186 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7186 SdHoareTripleChecker+Valid, 8769 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:00,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7186 Valid, 8769 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 14:34:01,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547813 states. [2023-12-21 14:34:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547813 to 344216. [2023-12-21 14:34:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344216 states, 344215 states have (on average 1.2960794852054676) internal successors, (446130), 344215 states have internal predecessors, (446130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344216 states to 344216 states and 446130 transitions. [2023-12-21 14:34:06,840 INFO L78 Accepts]: Start accepts. Automaton has 344216 states and 446130 transitions. Word has length 198 [2023-12-21 14:34:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:34:06,841 INFO L495 AbstractCegarLoop]: Abstraction has 344216 states and 446130 transitions. [2023-12-21 14:34:06,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:06,841 INFO L276 IsEmpty]: Start isEmpty. Operand 344216 states and 446130 transitions. [2023-12-21 14:34:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:34:06,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:34:06,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:34:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-12-21 14:34:06,854 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:34:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:34:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 197278906, now seen corresponding path program 1 times [2023-12-21 14:34:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:34:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136439452] [2023-12-21 14:34:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:34:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:34:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:34:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:34:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:34:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136439452] [2023-12-21 14:34:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136439452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:34:07,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:34:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 14:34:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890323207] [2023-12-21 14:34:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:34:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 14:34:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:34:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 14:34:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:34:07,546 INFO L87 Difference]: Start difference. First operand 344216 states and 446130 transitions. Second operand has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:34:10,664 INFO L93 Difference]: Finished difference Result 589856 states and 769298 transitions. [2023-12-21 14:34:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 14:34:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:34:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:12,197 INFO L225 Difference]: With dead ends: 589856 [2023-12-21 14:34:12,197 INFO L226 Difference]: Without dead ends: 544099 [2023-12-21 14:34:12,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=968, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 14:34:12,299 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 2963 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 7631 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:12,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 7631 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:34:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544099 states. [2023-12-21 14:34:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544099 to 344204. [2023-12-21 14:34:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344204 states, 344203 states have (on average 1.296002649599219) internal successors, (446088), 344203 states have internal predecessors, (446088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344204 states to 344204 states and 446088 transitions. [2023-12-21 14:34:18,998 INFO L78 Accepts]: Start accepts. Automaton has 344204 states and 446088 transitions. Word has length 198 [2023-12-21 14:34:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:34:18,998 INFO L495 AbstractCegarLoop]: Abstraction has 344204 states and 446088 transitions. [2023-12-21 14:34:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 344204 states and 446088 transitions. [2023-12-21 14:34:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:34:19,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:34:19,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:34:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-12-21 14:34:19,017 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:34:19,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:34:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1034935390, now seen corresponding path program 1 times [2023-12-21 14:34:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:34:19,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598772051] [2023-12-21 14:34:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:34:19,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:34:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:34:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:34:19,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:34:19,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598772051] [2023-12-21 14:34:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598772051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:34:19,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:34:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 14:34:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162465619] [2023-12-21 14:34:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:34:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 14:34:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:34:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 14:34:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:34:19,726 INFO L87 Difference]: Start difference. First operand 344204 states and 446088 transitions. Second operand has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:34:22,651 INFO L93 Difference]: Finished difference Result 591826 states and 772624 transitions. [2023-12-21 14:34:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 14:34:22,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:34:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:24,611 INFO L225 Difference]: With dead ends: 591826 [2023-12-21 14:34:24,611 INFO L226 Difference]: Without dead ends: 549334 [2023-12-21 14:34:24,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 14:34:24,842 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 3730 mSDsluCounter, 5612 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3730 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:24,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3730 Valid, 6397 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 14:34:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549334 states. [2023-12-21 14:34:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549334 to 344078. [2023-12-21 14:34:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344078 states, 344077 states have (on average 1.2960035108420498) internal successors, (445925), 344077 states have internal predecessors, (445925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344078 states to 344078 states and 445925 transitions. [2023-12-21 14:34:31,865 INFO L78 Accepts]: Start accepts. Automaton has 344078 states and 445925 transitions. Word has length 198 [2023-12-21 14:34:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:34:31,865 INFO L495 AbstractCegarLoop]: Abstraction has 344078 states and 445925 transitions. [2023-12-21 14:34:31,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 344078 states and 445925 transitions. [2023-12-21 14:34:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:34:31,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:34:31,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:34:31,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-12-21 14:34:31,878 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:34:31,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:34:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1730544983, now seen corresponding path program 1 times [2023-12-21 14:34:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:34:31,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23939021] [2023-12-21 14:34:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:34:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:34:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:34:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:34:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:34:32,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23939021] [2023-12-21 14:34:32,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23939021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:34:32,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:34:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 14:34:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473163825] [2023-12-21 14:34:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:34:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 14:34:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:34:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 14:34:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:34:32,633 INFO L87 Difference]: Start difference. First operand 344078 states and 445925 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:34:35,485 INFO L93 Difference]: Finished difference Result 497701 states and 648129 transitions. [2023-12-21 14:34:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 14:34:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:34:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:37,064 INFO L225 Difference]: With dead ends: 497701 [2023-12-21 14:34:37,064 INFO L226 Difference]: Without dead ends: 481506 [2023-12-21 14:34:37,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:34:37,181 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 3898 mSDsluCounter, 5668 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3898 SdHoareTripleChecker+Valid, 6481 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:37,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3898 Valid, 6481 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:34:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481506 states. [2023-12-21 14:34:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481506 to 344673. [2023-12-21 14:34:42,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344673 states, 344672 states have (on average 1.2955244406276112) internal successors, (446531), 344672 states have internal predecessors, (446531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344673 states to 344673 states and 446531 transitions. [2023-12-21 14:34:43,195 INFO L78 Accepts]: Start accepts. Automaton has 344673 states and 446531 transitions. Word has length 198 [2023-12-21 14:34:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:34:43,195 INFO L495 AbstractCegarLoop]: Abstraction has 344673 states and 446531 transitions. [2023-12-21 14:34:43,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 344673 states and 446531 transitions. [2023-12-21 14:34:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:34:43,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:34:43,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:34:43,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-12-21 14:34:43,211 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:34:43,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:34:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1528637630, now seen corresponding path program 1 times [2023-12-21 14:34:43,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:34:43,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470127216] [2023-12-21 14:34:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:34:43,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:34:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:34:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:34:43,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:34:43,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470127216] [2023-12-21 14:34:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470127216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:34:43,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:34:43,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-21 14:34:43,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420131381] [2023-12-21 14:34:43,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:34:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 14:34:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:34:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 14:34:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:34:43,890 INFO L87 Difference]: Start difference. First operand 344673 states and 446531 transitions. Second operand has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:34:47,027 INFO L93 Difference]: Finished difference Result 594393 states and 775278 transitions. [2023-12-21 14:34:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 14:34:47,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:34:47,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:48,851 INFO L225 Difference]: With dead ends: 594393 [2023-12-21 14:34:48,851 INFO L226 Difference]: Without dead ends: 546604 [2023-12-21 14:34:48,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 14:34:49,000 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 4065 mSDsluCounter, 4565 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 5218 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:49,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 5218 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 14:34:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546604 states. [2023-12-21 14:34:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546604 to 343859. [2023-12-21 14:34:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343859 states, 343858 states have (on average 1.2961076956185402) internal successors, (445677), 343858 states have internal predecessors, (445677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343859 states to 343859 states and 445677 transitions. [2023-12-21 14:34:55,026 INFO L78 Accepts]: Start accepts. Automaton has 343859 states and 445677 transitions. Word has length 198 [2023-12-21 14:34:55,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:34:55,026 INFO L495 AbstractCegarLoop]: Abstraction has 343859 states and 445677 transitions. [2023-12-21 14:34:55,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 343859 states and 445677 transitions. [2023-12-21 14:34:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 14:34:55,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:34:55,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:34:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-12-21 14:34:55,038 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:34:55,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:34:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1818591794, now seen corresponding path program 1 times [2023-12-21 14:34:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:34:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532254316] [2023-12-21 14:34:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:34:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:34:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:34:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:34:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:34:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532254316] [2023-12-21 14:34:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532254316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:34:55,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:34:55,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 14:34:55,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454272398] [2023-12-21 14:34:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:34:55,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 14:34:55,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:34:55,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 14:34:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-12-21 14:34:55,687 INFO L87 Difference]: Start difference. First operand 343859 states and 445677 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:34:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:34:58,466 INFO L93 Difference]: Finished difference Result 507477 states and 660326 transitions. [2023-12-21 14:34:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 14:34:58,467 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 16 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-21 14:34:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:34:59,385 INFO L225 Difference]: With dead ends: 507477 [2023-12-21 14:34:59,385 INFO L226 Difference]: Without dead ends: 490303 [2023-12-21 14:34:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1226, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 14:34:59,452 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 2987 mSDsluCounter, 7597 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:34:59,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2987 Valid, 8558 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:35:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490303 states. Received shutdown request... [2023-12-21 14:35:02,054 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 14:35:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-12-21 14:35:02,055 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-21 14:35:02,058 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:02,060 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 14:35:02,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:35:02 BoogieIcfgContainer [2023-12-21 14:35:02,061 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 14:35:02,061 INFO L158 Benchmark]: Toolchain (without parser) took 629903.78ms. Allocated memory was 294.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 246.1MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 235.9MB. Free memory is still 185.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.43ms. Allocated memory is still 294.6MB. Free memory was 246.1MB in the beginning and 212.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.62ms. Allocated memory is still 294.6MB. Free memory was 212.6MB in the beginning and 205.5MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: Boogie Preprocessor took 134.21ms. Allocated memory is still 294.6MB. Free memory was 205.5MB in the beginning and 253.1MB in the end (delta: -47.5MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: RCFGBuilder took 1009.62ms. Allocated memory is still 294.6MB. Free memory was 253.1MB in the beginning and 235.4MB in the end (delta: 17.6MB). Peak memory consumption was 87.9MB. Max. memory is 8.0GB. [2023-12-21 14:35:02,061 INFO L158 Benchmark]: TraceAbstraction took 628227.66ms. Allocated memory was 294.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 234.4MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-21 14:35:02,062 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 235.9MB. Free memory is still 185.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 463.43ms. Allocated memory is still 294.6MB. Free memory was 246.1MB in the beginning and 212.6MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.62ms. Allocated memory is still 294.6MB. Free memory was 212.6MB in the beginning and 205.5MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 134.21ms. Allocated memory is still 294.6MB. Free memory was 205.5MB in the beginning and 253.1MB in the end (delta: -47.5MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1009.62ms. Allocated memory is still 294.6MB. Free memory was 253.1MB in the beginning and 235.4MB in the end (delta: 17.6MB). Peak memory consumption was 87.9MB. Max. memory is 8.0GB. * TraceAbstraction took 628227.66ms. Allocated memory was 294.6MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 234.4MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 2.8GB. 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: 933]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 933). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 342 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 628.2s, OverallIterations: 102, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.6s, AutomataDifference: 273.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213127 SdHoareTripleChecker+Valid, 59.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213127 mSDsluCounter, 469534 SdHoareTripleChecker+Invalid, 49.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 400456 mSDsCounter, 3331 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114980 IncrementalHoareTripleChecker+Invalid, 118311 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3331 mSolverCounterUnsat, 69078 mSDtfsCounter, 114980 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2167 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1971 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15340 ImplicationChecksByTransitivity, 58.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350532occurred in iteration=93, InterpolantAutomatonStates: 1561, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 300.5s AutomataMinimizationTime, 102 MinimizatonAttempts, 5905296 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 47.9s InterpolantComputationTime, 18671 NumberOfCodeBlocks, 18671 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 18569 ConstructedInterpolants, 0 QuantifiedInterpolants, 151215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 102 PerfectInterpolantSequences, 0/0 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