/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.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:23:46,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:23:46,671 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 14:23:46,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:23:46,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:23:46,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:23:46,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:23:46,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:23:46,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:23:46,692 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:23:46,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:23:46,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:23:46,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:23:46,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:23:46,693 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:23:46,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:23:46,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:23:46,694 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:23:46,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:23:46,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:23:46,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:23:46,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:23:46,696 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:23:46,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:23:46,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:23:46,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:23:46,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:23:46,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:23:46,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:23:46,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:23:46,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:23:46,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:23:46,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:23:46,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:23:46,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:23:46,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:23:46,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:23:46,908 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:23:46,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:23:47,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:23:48,169 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:23:48,169 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:23:48,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd9743f5/f1d89fe86b5547179579dcd1081b7a24/FLAG038a3be39 [2023-12-21 14:23:48,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd9743f5/f1d89fe86b5547179579dcd1081b7a24 [2023-12-21 14:23:48,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:23:48,200 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:23:48,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:23:48,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:23:48,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:23:48,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab83b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48, skipping insertion in model container [2023-12-21 14:23:48,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,258 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:23:48,453 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.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2023-12-21 14:23:48,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:23:48,512 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:23:48,606 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.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2023-12-21 14:23:48,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:23:48,651 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:23:48,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48 WrapperNode [2023-12-21 14:23:48,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:23:48,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:23:48,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:23:48,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:23:48,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,743 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1332 [2023-12-21 14:23:48,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:23:48,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:23:48,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:23:48,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:23:48,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,764 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,781 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 14:23:48,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:23:48,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:23:48,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:23:48,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:23:48,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (1/1) ... [2023-12-21 14:23:48,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:23:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:23:48,884 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 14:23:48,892 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 14:23:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:23:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:23:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:23:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:23:49,024 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:23:49,025 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:23:49,764 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:23:49,803 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:23:49,803 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:23:49,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:49 BoogieIcfgContainer [2023-12-21 14:23:49,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:23:49,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:23:49,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:23:49,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:23:49,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:23:48" (1/3) ... [2023-12-21 14:23:49,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0d3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:49, skipping insertion in model container [2023-12-21 14:23:49,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:23:48" (2/3) ... [2023-12-21 14:23:49,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0d3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:23:49, skipping insertion in model container [2023-12-21 14:23:49,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:23:49" (3/3) ... [2023-12-21 14:23:49,811 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-12-21 14:23:49,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:23:49,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:23:49,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:23:49,880 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;@401d794c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:23:49,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:23:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 327 states have (on average 1.7798165137614679) internal successors, (582), 328 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 14:23:49,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:49,902 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] [2023-12-21 14:23:49,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:49,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1440445336, now seen corresponding path program 1 times [2023-12-21 14:23:49,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375719813] [2023-12-21 14:23:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:50,408 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 14:23:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375719813] [2023-12-21 14:23:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375719813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082948171] [2023-12-21 14:23:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:50,445 INFO L87 Difference]: Start difference. First operand has 329 states, 327 states have (on average 1.7798165137614679) internal successors, (582), 328 states have internal predecessors, (582), 0 states have call successors, (0), 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 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:50,570 INFO L93 Difference]: Finished difference Result 636 states and 1108 transitions. [2023-12-21 14:23:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:50,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-21 14:23:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:50,588 INFO L225 Difference]: With dead ends: 636 [2023-12-21 14:23:50,588 INFO L226 Difference]: Without dead ends: 522 [2023-12-21 14:23:50,591 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 14:23:50,593 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 381 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 931 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 14:23:50,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 931 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:23:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-21 14:23:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 520. [2023-12-21 14:23:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.4932562620423893) internal successors, (775), 519 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:50,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 775 transitions. [2023-12-21 14:23:50,658 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 775 transitions. Word has length 151 [2023-12-21 14:23:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:50,658 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 775 transitions. [2023-12-21 14:23:50,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 775 transitions. [2023-12-21 14:23:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 14:23:50,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:50,661 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] [2023-12-21 14:23:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:23:50,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:50,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2022320357, now seen corresponding path program 1 times [2023-12-21 14:23:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744475178] [2023-12-21 14:23:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:51,064 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 14:23:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744475178] [2023-12-21 14:23:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744475178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:51,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693392607] [2023-12-21 14:23:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:51,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:51,072 INFO L87 Difference]: Start difference. First operand 520 states and 775 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:51,138 INFO L93 Difference]: Finished difference Result 1527 states and 2268 transitions. [2023-12-21 14:23:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:51,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-21 14:23:51,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:51,144 INFO L225 Difference]: With dead ends: 1527 [2023-12-21 14:23:51,145 INFO L226 Difference]: Without dead ends: 1015 [2023-12-21 14:23:51,149 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 14:23:51,150 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1049 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:51,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1195 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-21 14:23:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1013. [2023-12-21 14:23:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.4782608695652173) internal successors, (1496), 1012 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1496 transitions. [2023-12-21 14:23:51,187 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1496 transitions. Word has length 151 [2023-12-21 14:23:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1496 transitions. [2023-12-21 14:23:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1496 transitions. [2023-12-21 14:23:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 14:23:51,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:51,196 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] [2023-12-21 14:23:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:23:51,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:51,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash -439480105, now seen corresponding path program 1 times [2023-12-21 14:23:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003636483] [2023-12-21 14:23:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:51,271 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 14:23:51,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003636483] [2023-12-21 14:23:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003636483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:51,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:51,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008106325] [2023-12-21 14:23:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:51,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:51,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:51,276 INFO L87 Difference]: Start difference. First operand 1013 states and 1496 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:51,297 INFO L93 Difference]: Finished difference Result 3003 states and 4428 transitions. [2023-12-21 14:23:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-21 14:23:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:51,305 INFO L225 Difference]: With dead ends: 3003 [2023-12-21 14:23:51,305 INFO L226 Difference]: Without dead ends: 2017 [2023-12-21 14:23:51,308 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 14:23:51,310 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 471 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1216 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 14:23:51,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1216 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2023-12-21 14:23:51,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1015. [2023-12-21 14:23:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.4773175542406312) internal successors, (1498), 1014 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1498 transitions. [2023-12-21 14:23:51,335 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1498 transitions. Word has length 152 [2023-12-21 14:23:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:51,338 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1498 transitions. [2023-12-21 14:23:51,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1498 transitions. [2023-12-21 14:23:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 14:23:51,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:51,344 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] [2023-12-21 14:23:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:23:51,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:51,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash -357941146, now seen corresponding path program 1 times [2023-12-21 14:23:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458621099] [2023-12-21 14:23:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:51,652 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 14:23:51,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:51,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458621099] [2023-12-21 14:23:51,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458621099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:51,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:51,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435417942] [2023-12-21 14:23:51,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:51,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:51,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:51,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:51,654 INFO L87 Difference]: Start difference. First operand 1015 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:51,714 INFO L93 Difference]: Finished difference Result 2933 states and 4308 transitions. [2023-12-21 14:23:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-12-21 14:23:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:51,720 INFO L225 Difference]: With dead ends: 2933 [2023-12-21 14:23:51,720 INFO L226 Difference]: Without dead ends: 1947 [2023-12-21 14:23:51,722 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 14:23:51,726 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 951 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:51,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2023-12-21 14:23:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1945. [2023-12-21 14:23:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1944 states have (on average 1.4573045267489713) internal successors, (2833), 1944 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2833 transitions. [2023-12-21 14:23:51,756 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2833 transitions. Word has length 153 [2023-12-21 14:23:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 1945 states and 2833 transitions. [2023-12-21 14:23:51,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2833 transitions. [2023-12-21 14:23:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:23:51,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:51,759 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] [2023-12-21 14:23:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:23:51,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:51,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 916719672, now seen corresponding path program 1 times [2023-12-21 14:23:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:51,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6897272] [2023-12-21 14:23:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:51,817 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 14:23:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6897272] [2023-12-21 14:23:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6897272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:51,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899054558] [2023-12-21 14:23:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:51,819 INFO L87 Difference]: Start difference. First operand 1945 states and 2833 transitions. 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 14:23:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:51,848 INFO L93 Difference]: Finished difference Result 5761 states and 8381 transitions. [2023-12-21 14:23:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:51,849 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 14:23:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:51,860 INFO L225 Difference]: With dead ends: 5761 [2023-12-21 14:23:51,860 INFO L226 Difference]: Without dead ends: 3859 [2023-12-21 14:23:51,863 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 14:23:51,863 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 457 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1082 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 14:23:51,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1082 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2023-12-21 14:23:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 1949. [2023-12-21 14:23:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 1.4563655030800822) internal successors, (2837), 1948 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2837 transitions. [2023-12-21 14:23:51,901 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2837 transitions. Word has length 154 [2023-12-21 14:23:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:51,902 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 2837 transitions. [2023-12-21 14:23:51,902 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 14:23:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2837 transitions. [2023-12-21 14:23:51,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:23:51,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:51,904 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 14:23:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:23:51,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:51,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1506950247, now seen corresponding path program 1 times [2023-12-21 14:23:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995494939] [2023-12-21 14:23:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:52,126 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 14:23:52,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:52,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995494939] [2023-12-21 14:23:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995494939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830291344] [2023-12-21 14:23:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:52,128 INFO L87 Difference]: Start difference. First operand 1949 states and 2837 transitions. Second operand has 4 states, 4 states have (on average 38.75) 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 14:23:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:52,200 INFO L93 Difference]: Finished difference Result 5637 states and 8173 transitions. [2023-12-21 14:23:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) 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 14:23:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:52,210 INFO L225 Difference]: With dead ends: 5637 [2023-12-21 14:23:52,210 INFO L226 Difference]: Without dead ends: 3735 [2023-12-21 14:23:52,213 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 14:23:52,213 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 949 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:52,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1217 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:52,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-12-21 14:23:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3733. [2023-12-21 14:23:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3732 states have (on average 1.4359592711682745) internal successors, (5359), 3732 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5359 transitions. [2023-12-21 14:23:52,283 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5359 transitions. Word has length 155 [2023-12-21 14:23:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:52,283 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 5359 transitions. [2023-12-21 14:23:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) 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 14:23:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5359 transitions. [2023-12-21 14:23:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:23:52,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:52,287 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 14:23:52,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:23:52,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:52,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 70163481, now seen corresponding path program 1 times [2023-12-21 14:23:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:52,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869589168] [2023-12-21 14:23:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:52,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:52,337 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 14:23:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869589168] [2023-12-21 14:23:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869589168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:52,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:52,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:52,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551086456] [2023-12-21 14:23:52,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:52,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:52,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:52,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:52,339 INFO L87 Difference]: Start difference. First operand 3733 states and 5359 transitions. Second operand has 3 states, 3 states have (on average 52.0) 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 14:23:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:52,380 INFO L93 Difference]: Finished difference Result 10769 states and 15501 transitions. [2023-12-21 14:23:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:52,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) 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 14:23:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:52,398 INFO L225 Difference]: With dead ends: 10769 [2023-12-21 14:23:52,398 INFO L226 Difference]: Without dead ends: 7375 [2023-12-21 14:23:52,403 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 14:23:52,403 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 443 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1392 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 14:23:52,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1392 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2023-12-21 14:23:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 3741. [2023-12-21 14:23:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 1.4350267379679145) internal successors, (5367), 3740 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 5367 transitions. [2023-12-21 14:23:52,486 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 5367 transitions. Word has length 156 [2023-12-21 14:23:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:52,487 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 5367 transitions. [2023-12-21 14:23:52,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) 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 14:23:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 5367 transitions. [2023-12-21 14:23:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 14:23:52,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:52,491 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 14:23:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:23:52,491 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:52,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1340167208, now seen corresponding path program 1 times [2023-12-21 14:23:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925931005] [2023-12-21 14:23:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:52,758 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 14:23:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925931005] [2023-12-21 14:23:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925931005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:52,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:23:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749064903] [2023-12-21 14:23:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:52,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:23:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:23:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:23:52,759 INFO L87 Difference]: Start difference. First operand 3741 states and 5367 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 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 14:23:52,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:52,839 INFO L93 Difference]: Finished difference Result 10855 states and 15512 transitions. [2023-12-21 14:23:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:52,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 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 14:23:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:52,869 INFO L225 Difference]: With dead ends: 10855 [2023-12-21 14:23:52,869 INFO L226 Difference]: Without dead ends: 7201 [2023-12-21 14:23:52,876 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 14:23:52,877 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1417 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1224 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 14:23:52,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1224 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2023-12-21 14:23:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7199. [2023-12-21 14:23:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7199 states, 7198 states have (on average 1.4148374548485692) internal successors, (10184), 7198 states have internal predecessors, (10184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 10184 transitions. [2023-12-21 14:23:53,002 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 10184 transitions. Word has length 157 [2023-12-21 14:23:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:53,003 INFO L495 AbstractCegarLoop]: Abstraction has 7199 states and 10184 transitions. [2023-12-21 14:23:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 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 14:23:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 10184 transitions. [2023-12-21 14:23:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 14:23:53,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:53,009 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 14:23:53,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:23:53,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:53,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1317970712, now seen corresponding path program 1 times [2023-12-21 14:23:53,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:53,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780341840] [2023-12-21 14:23:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:53,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:53,183 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 14:23:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:53,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780341840] [2023-12-21 14:23:53,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780341840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:53,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:53,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:23:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187017739] [2023-12-21 14:23:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:53,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:53,185 INFO L87 Difference]: Start difference. First operand 7199 states and 10184 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 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 14:23:53,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:53,238 INFO L93 Difference]: Finished difference Result 12623 states and 17844 transitions. [2023-12-21 14:23:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 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 14:23:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:53,247 INFO L225 Difference]: With dead ends: 12623 [2023-12-21 14:23:53,247 INFO L226 Difference]: Without dead ends: 5497 [2023-12-21 14:23:53,255 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 14:23:53,256 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 65 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1473 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 14:23:53,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1473 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2023-12-21 14:23:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 5497. [2023-12-21 14:23:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5497 states, 5496 states have (on average 1.4122998544395924) internal successors, (7762), 5496 states have internal predecessors, (7762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 7762 transitions. [2023-12-21 14:23:53,396 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 7762 transitions. Word has length 157 [2023-12-21 14:23:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:53,396 INFO L495 AbstractCegarLoop]: Abstraction has 5497 states and 7762 transitions. [2023-12-21 14:23:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 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 14:23:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 7762 transitions. [2023-12-21 14:23:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 14:23:53,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:53,401 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 14:23:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:23:53,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:53,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1232985335, now seen corresponding path program 1 times [2023-12-21 14:23:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:53,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42187965] [2023-12-21 14:23:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:53,451 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 14:23:53,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42187965] [2023-12-21 14:23:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42187965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:53,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:53,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101377908] [2023-12-21 14:23:53,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:53,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:53,453 INFO L87 Difference]: Start difference. First operand 5497 states and 7762 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 14:23:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:53,498 INFO L93 Difference]: Finished difference Result 12145 states and 17704 transitions. [2023-12-21 14:23:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:53,500 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 14:23:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:53,510 INFO L225 Difference]: With dead ends: 12145 [2023-12-21 14:23:53,510 INFO L226 Difference]: Without dead ends: 7259 [2023-12-21 14:23:53,516 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 14:23:53,516 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 233 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:53,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 974 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7259 states. [2023-12-21 14:23:53,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7259 to 7113. [2023-12-21 14:23:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7112 states have (on average 1.4580989876265467) internal successors, (10370), 7112 states have internal predecessors, (10370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 10370 transitions. [2023-12-21 14:23:53,618 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 10370 transitions. Word has length 158 [2023-12-21 14:23:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:53,618 INFO L495 AbstractCegarLoop]: Abstraction has 7113 states and 10370 transitions. [2023-12-21 14:23:53,619 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 14:23:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 10370 transitions. [2023-12-21 14:23:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:23:53,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:53,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:53,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:23:53,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:53,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1198029479, now seen corresponding path program 1 times [2023-12-21 14:23:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:53,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160384960] [2023-12-21 14:23:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:53,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:54,030 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 14:23:54,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160384960] [2023-12-21 14:23:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160384960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:54,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:54,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:23:54,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052518096] [2023-12-21 14:23:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:23:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:54,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:23:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:23:54,032 INFO L87 Difference]: Start difference. First operand 7113 states and 10370 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:54,614 INFO L93 Difference]: Finished difference Result 31489 states and 47925 transitions. [2023-12-21 14:23:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:23:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-21 14:23:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:54,655 INFO L225 Difference]: With dead ends: 31489 [2023-12-21 14:23:54,655 INFO L226 Difference]: Without dead ends: 25125 [2023-12-21 14:23:54,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:23:54,672 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 4642 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4642 SdHoareTripleChecker+Valid, 2394 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:54,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4642 Valid, 2394 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:23:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25125 states. [2023-12-21 14:23:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25125 to 17213. [2023-12-21 14:23:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17213 states, 17212 states have (on average 1.4880316058563792) internal successors, (25612), 17212 states have internal predecessors, (25612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17213 states to 17213 states and 25612 transitions. [2023-12-21 14:23:55,010 INFO L78 Accepts]: Start accepts. Automaton has 17213 states and 25612 transitions. Word has length 161 [2023-12-21 14:23:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:55,010 INFO L495 AbstractCegarLoop]: Abstraction has 17213 states and 25612 transitions. [2023-12-21 14:23:55,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 17213 states and 25612 transitions. [2023-12-21 14:23:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:23:55,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:55,020 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] [2023-12-21 14:23:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:23:55,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:55,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1392266336, now seen corresponding path program 1 times [2023-12-21 14:23:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721947493] [2023-12-21 14:23:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:55,244 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 14:23:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721947493] [2023-12-21 14:23:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721947493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:55,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:23:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019164331] [2023-12-21 14:23:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:55,246 INFO L87 Difference]: Start difference. First operand 17213 states and 25612 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:55,376 INFO L93 Difference]: Finished difference Result 33257 states and 51098 transitions. [2023-12-21 14:23:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-21 14:23:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:55,412 INFO L225 Difference]: With dead ends: 33257 [2023-12-21 14:23:55,412 INFO L226 Difference]: Without dead ends: 21375 [2023-12-21 14:23:55,437 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 14:23:55,437 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 775 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:55,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 959 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21375 states. [2023-12-21 14:23:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21375 to 21373. [2023-12-21 14:23:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21373 states, 21372 states have (on average 1.4984091334456298) internal successors, (32024), 21372 states have internal predecessors, (32024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21373 states to 21373 states and 32024 transitions. [2023-12-21 14:23:55,793 INFO L78 Accepts]: Start accepts. Automaton has 21373 states and 32024 transitions. Word has length 161 [2023-12-21 14:23:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:55,793 INFO L495 AbstractCegarLoop]: Abstraction has 21373 states and 32024 transitions. [2023-12-21 14:23:55,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 21373 states and 32024 transitions. [2023-12-21 14:23:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:23:55,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:55,804 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] [2023-12-21 14:23:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:23:55,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:55,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -970878576, now seen corresponding path program 1 times [2023-12-21 14:23:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250159975] [2023-12-21 14:23:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:55,974 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 14:23:55,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:55,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250159975] [2023-12-21 14:23:55,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250159975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:55,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699870197] [2023-12-21 14:23:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:55,975 INFO L87 Difference]: Start difference. First operand 21373 states and 32024 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:56,252 INFO L93 Difference]: Finished difference Result 56243 states and 84125 transitions. [2023-12-21 14:23:56,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-21 14:23:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:56,309 INFO L225 Difference]: With dead ends: 56243 [2023-12-21 14:23:56,309 INFO L226 Difference]: Without dead ends: 35001 [2023-12-21 14:23:56,321 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 14:23:56,321 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 934 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:23:56,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1233 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35001 states. [2023-12-21 14:23:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35001 to 34999. [2023-12-21 14:23:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34999 states, 34998 states have (on average 1.4783130464597978) internal successors, (51738), 34998 states have internal predecessors, (51738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34999 states to 34999 states and 51738 transitions. [2023-12-21 14:23:56,983 INFO L78 Accepts]: Start accepts. Automaton has 34999 states and 51738 transitions. Word has length 161 [2023-12-21 14:23:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:56,983 INFO L495 AbstractCegarLoop]: Abstraction has 34999 states and 51738 transitions. [2023-12-21 14:23:56,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 34999 states and 51738 transitions. [2023-12-21 14:23:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 14:23:56,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:56,999 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] [2023-12-21 14:23:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:23:57,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash -428451477, now seen corresponding path program 1 times [2023-12-21 14:23:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:57,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511460414] [2023-12-21 14:23:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:57,294 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 14:23:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511460414] [2023-12-21 14:23:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511460414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:23:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835484261] [2023-12-21 14:23:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:57,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:23:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:23:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:23:57,296 INFO L87 Difference]: Start difference. First operand 34999 states and 51738 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:57,441 INFO L93 Difference]: Finished difference Result 62915 states and 93044 transitions. [2023-12-21 14:23:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:23:57,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-21 14:23:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:57,599 INFO L225 Difference]: With dead ends: 62915 [2023-12-21 14:23:57,600 INFO L226 Difference]: Without dead ends: 34999 [2023-12-21 14:23:57,626 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 14:23:57,627 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 53 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1434 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 14:23:57,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1434 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34999 states. [2023-12-21 14:23:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34999 to 34999. [2023-12-21 14:23:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34999 states, 34998 states have (on average 1.47828447339848) internal successors, (51737), 34998 states have internal predecessors, (51737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34999 states to 34999 states and 51737 transitions. [2023-12-21 14:23:58,236 INFO L78 Accepts]: Start accepts. Automaton has 34999 states and 51737 transitions. Word has length 163 [2023-12-21 14:23:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:58,239 INFO L495 AbstractCegarLoop]: Abstraction has 34999 states and 51737 transitions. [2023-12-21 14:23:58,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 34999 states and 51737 transitions. [2023-12-21 14:23:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 14:23:58,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:58,255 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] [2023-12-21 14:23:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:23:58,255 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:58,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash 716908174, now seen corresponding path program 1 times [2023-12-21 14:23:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800403623] [2023-12-21 14:23:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:23:58,328 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 14:23:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:23:58,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800403623] [2023-12-21 14:23:58,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800403623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:23:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:23:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:23:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454056023] [2023-12-21 14:23:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:23:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:23:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:23:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:23:58,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:23:58,330 INFO L87 Difference]: Start difference. First operand 34999 states and 51737 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:23:58,698 INFO L93 Difference]: Finished difference Result 87988 states and 130464 transitions. [2023-12-21 14:23:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:23:58,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-21 14:23:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:23:58,805 INFO L225 Difference]: With dead ends: 87988 [2023-12-21 14:23:58,805 INFO L226 Difference]: Without dead ends: 54466 [2023-12-21 14:23:58,823 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 14:23:58,824 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 395 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1045 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 14:23:58,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1045 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:23:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54466 states. [2023-12-21 14:23:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54466 to 54464. [2023-12-21 14:23:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54464 states, 54463 states have (on average 1.4610653103942126) internal successors, (79574), 54463 states have internal predecessors, (79574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54464 states to 54464 states and 79574 transitions. [2023-12-21 14:23:59,844 INFO L78 Accepts]: Start accepts. Automaton has 54464 states and 79574 transitions. Word has length 163 [2023-12-21 14:23:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:23:59,845 INFO L495 AbstractCegarLoop]: Abstraction has 54464 states and 79574 transitions. [2023-12-21 14:23:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:23:59,845 INFO L276 IsEmpty]: Start isEmpty. Operand 54464 states and 79574 transitions. [2023-12-21 14:23:59,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 14:23:59,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:23:59,887 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 14:23:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:23:59,887 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:23:59,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:23:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -882613592, now seen corresponding path program 1 times [2023-12-21 14:23:59,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:23:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543578734] [2023-12-21 14:23:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:23:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:23:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:00,014 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 14:24:00,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543578734] [2023-12-21 14:24:00,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543578734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:00,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:00,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274956150] [2023-12-21 14:24:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:00,017 INFO L87 Difference]: Start difference. First operand 54464 states and 79574 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:00,551 INFO L93 Difference]: Finished difference Result 126464 states and 186744 transitions. [2023-12-21 14:24:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:00,683 INFO L225 Difference]: With dead ends: 126464 [2023-12-21 14:24:00,683 INFO L226 Difference]: Without dead ends: 82760 [2023-12-21 14:24:00,730 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 14:24:00,730 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 301 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 998 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 14:24:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 998 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82760 states. [2023-12-21 14:24:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82760 to 75830. [2023-12-21 14:24:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75830 states, 75829 states have (on average 1.4907489219164172) internal successors, (113042), 75829 states have internal predecessors, (113042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75830 states to 75830 states and 113042 transitions. [2023-12-21 14:24:02,200 INFO L78 Accepts]: Start accepts. Automaton has 75830 states and 113042 transitions. Word has length 167 [2023-12-21 14:24:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:02,201 INFO L495 AbstractCegarLoop]: Abstraction has 75830 states and 113042 transitions. [2023-12-21 14:24:02,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 75830 states and 113042 transitions. [2023-12-21 14:24:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 14:24:02,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:02,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:24:02,230 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:02,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -948399224, now seen corresponding path program 1 times [2023-12-21 14:24:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216764404] [2023-12-21 14:24:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:02,323 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 14:24:02,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:02,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216764404] [2023-12-21 14:24:02,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216764404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:02,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:02,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94794182] [2023-12-21 14:24:02,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:02,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:02,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:02,325 INFO L87 Difference]: Start difference. First operand 75830 states and 113042 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:03,111 INFO L93 Difference]: Finished difference Result 216232 states and 324642 transitions. [2023-12-21 14:24:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:03,335 INFO L225 Difference]: With dead ends: 216232 [2023-12-21 14:24:03,335 INFO L226 Difference]: Without dead ends: 149808 [2023-12-21 14:24:03,400 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 14:24:03,401 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 375 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:03,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 885 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149808 states. [2023-12-21 14:24:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149808 to 149806. [2023-12-21 14:24:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149806 states, 149805 states have (on average 1.4857047495076934) internal successors, (222566), 149805 states have internal predecessors, (222566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149806 states to 149806 states and 222566 transitions. [2023-12-21 14:24:05,888 INFO L78 Accepts]: Start accepts. Automaton has 149806 states and 222566 transitions. Word has length 167 [2023-12-21 14:24:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:05,888 INFO L495 AbstractCegarLoop]: Abstraction has 149806 states and 222566 transitions. [2023-12-21 14:24:05,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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 14:24:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 149806 states and 222566 transitions. [2023-12-21 14:24:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 14:24:05,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:05,922 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 14:24:05,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:24:05,922 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:05,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1887218445, now seen corresponding path program 1 times [2023-12-21 14:24:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:05,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113981238] [2023-12-21 14:24:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:06,110 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 14:24:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:06,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113981238] [2023-12-21 14:24:06,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113981238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:06,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:06,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:06,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712749023] [2023-12-21 14:24:06,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:06,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:06,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:06,112 INFO L87 Difference]: Start difference. First operand 149806 states and 222566 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 14:24:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:07,358 INFO L93 Difference]: Finished difference Result 266873 states and 396095 transitions. [2023-12-21 14:24:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:07,358 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 14:24:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:07,611 INFO L225 Difference]: With dead ends: 266873 [2023-12-21 14:24:07,611 INFO L226 Difference]: Without dead ends: 117124 [2023-12-21 14:24:07,739 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 14:24:07,741 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 43 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1415 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 14:24:07,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1415 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117124 states. [2023-12-21 14:24:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117124 to 117124. [2023-12-21 14:24:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117124 states, 117123 states have (on average 1.4822110089393201) internal successors, (173601), 117123 states have internal predecessors, (173601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117124 states to 117124 states and 173601 transitions. [2023-12-21 14:24:09,621 INFO L78 Accepts]: Start accepts. Automaton has 117124 states and 173601 transitions. Word has length 167 [2023-12-21 14:24:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:09,621 INFO L495 AbstractCegarLoop]: Abstraction has 117124 states and 173601 transitions. [2023-12-21 14:24:09,621 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 14:24:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 117124 states and 173601 transitions. [2023-12-21 14:24:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 14:24:09,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:09,678 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] [2023-12-21 14:24:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:24:09,678 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:09,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash 166213248, now seen corresponding path program 1 times [2023-12-21 14:24:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234676818] [2023-12-21 14:24:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:09,785 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 14:24:09,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:09,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234676818] [2023-12-21 14:24:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234676818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:09,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:09,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18644742] [2023-12-21 14:24:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:09,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:09,787 INFO L87 Difference]: Start difference. First operand 117124 states and 173601 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:11,207 INFO L93 Difference]: Finished difference Result 295490 states and 441137 transitions. [2023-12-21 14:24:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-21 14:24:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:11,543 INFO L225 Difference]: With dead ends: 295490 [2023-12-21 14:24:11,543 INFO L226 Difference]: Without dead ends: 194572 [2023-12-21 14:24:11,929 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 14:24:11,931 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 301 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 965 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 14:24:11,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 965 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194572 states. [2023-12-21 14:24:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194572 to 179330. [2023-12-21 14:24:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179330 states, 179329 states have (on average 1.4997964634833183) internal successors, (268957), 179329 states have internal predecessors, (268957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179330 states to 179330 states and 268957 transitions. [2023-12-21 14:24:14,722 INFO L78 Accepts]: Start accepts. Automaton has 179330 states and 268957 transitions. Word has length 169 [2023-12-21 14:24:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:14,722 INFO L495 AbstractCegarLoop]: Abstraction has 179330 states and 268957 transitions. [2023-12-21 14:24:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 179330 states and 268957 transitions. [2023-12-21 14:24:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:24:15,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:15,137 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 14:24:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:24:15,137 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:15,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash 713692690, now seen corresponding path program 1 times [2023-12-21 14:24:15,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041666540] [2023-12-21 14:24:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:15,514 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 14:24:15,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041666540] [2023-12-21 14:24:15,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041666540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:15,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:15,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:24:15,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443284149] [2023-12-21 14:24:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:24:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:24:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:24:15,515 INFO L87 Difference]: Start difference. First operand 179330 states and 268957 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 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 14:24:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:17,995 INFO L93 Difference]: Finished difference Result 663678 states and 997360 transitions. [2023-12-21 14:24:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:24:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 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 14:24:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:19,336 INFO L225 Difference]: With dead ends: 663678 [2023-12-21 14:24:19,337 INFO L226 Difference]: Without dead ends: 491619 [2023-12-21 14:24:19,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-21 14:24:19,459 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 4935 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:19,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4935 Valid, 2211 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 14:24:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491619 states. [2023-12-21 14:24:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491619 to 226861. [2023-12-21 14:24:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226861 states, 226860 states have (on average 1.5067177995239354) internal successors, (341814), 226860 states have internal predecessors, (341814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226861 states to 226861 states and 341814 transitions. [2023-12-21 14:24:25,487 INFO L78 Accepts]: Start accepts. Automaton has 226861 states and 341814 transitions. Word has length 172 [2023-12-21 14:24:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:25,487 INFO L495 AbstractCegarLoop]: Abstraction has 226861 states and 341814 transitions. [2023-12-21 14:24:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 8 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 14:24:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 226861 states and 341814 transitions. [2023-12-21 14:24:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:24:25,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:25,515 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 14:24:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:24:25,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:25,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 781025862, now seen corresponding path program 1 times [2023-12-21 14:24:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965329500] [2023-12-21 14:24:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:25,790 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 14:24:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965329500] [2023-12-21 14:24:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965329500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:25,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:25,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764984141] [2023-12-21 14:24:25,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:25,793 INFO L87 Difference]: Start difference. First operand 226861 states and 341814 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 14:24:27,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:27,649 INFO L93 Difference]: Finished difference Result 513903 states and 781911 transitions. [2023-12-21 14:24:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:27,649 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 14:24:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:28,239 INFO L225 Difference]: With dead ends: 513903 [2023-12-21 14:24:28,239 INFO L226 Difference]: Without dead ends: 309289 [2023-12-21 14:24:28,745 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 14:24:28,747 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 591 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:28,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 914 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309289 states. [2023-12-21 14:24:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309289 to 309287. [2023-12-21 14:24:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309287 states, 309286 states have (on average 1.5047237831650964) internal successors, (465390), 309286 states have internal predecessors, (465390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309287 states to 309287 states and 465390 transitions. [2023-12-21 14:24:33,765 INFO L78 Accepts]: Start accepts. Automaton has 309287 states and 465390 transitions. Word has length 172 [2023-12-21 14:24:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:33,765 INFO L495 AbstractCegarLoop]: Abstraction has 309287 states and 465390 transitions. [2023-12-21 14:24:33,765 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 14:24:33,765 INFO L276 IsEmpty]: Start isEmpty. Operand 309287 states and 465390 transitions. [2023-12-21 14:24:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:24:33,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:33,798 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 14:24:33,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:24:33,798 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:33,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2002764445, now seen corresponding path program 1 times [2023-12-21 14:24:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:33,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107673037] [2023-12-21 14:24:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:33,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:34,058 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 14:24:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107673037] [2023-12-21 14:24:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107673037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:34,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:34,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:24:34,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230593237] [2023-12-21 14:24:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:34,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:34,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:34,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:34,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:34,060 INFO L87 Difference]: Start difference. First operand 309287 states and 465390 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:24:37,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:37,704 INFO L93 Difference]: Finished difference Result 859000 states and 1308706 transitions. [2023-12-21 14:24:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:24:37,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:24:37,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,732 INFO L225 Difference]: With dead ends: 859000 [2023-12-21 14:24:39,732 INFO L226 Difference]: Without dead ends: 716516 [2023-12-21 14:24:40,403 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 14:24:40,404 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1035 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:40,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1477 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:24:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716516 states. [2023-12-21 14:24:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716516 to 522686. [2023-12-21 14:24:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522686 states, 522685 states have (on average 1.511478232587505) internal successors, (790027), 522685 states have internal predecessors, (790027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522686 states to 522686 states and 790027 transitions. [2023-12-21 14:24:50,910 INFO L78 Accepts]: Start accepts. Automaton has 522686 states and 790027 transitions. Word has length 172 [2023-12-21 14:24:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:50,910 INFO L495 AbstractCegarLoop]: Abstraction has 522686 states and 790027 transitions. [2023-12-21 14:24:50,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:24:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 522686 states and 790027 transitions. [2023-12-21 14:24:50,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:24:50,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:50,946 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] [2023-12-21 14:24:50,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:24:50,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:50,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash 180856716, now seen corresponding path program 1 times [2023-12-21 14:24:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199550854] [2023-12-21 14:24:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:50,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:51,103 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 14:24:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199550854] [2023-12-21 14:24:51,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199550854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:51,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:51,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:24:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186571079] [2023-12-21 14:24:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:51,105 INFO L87 Difference]: Start difference. First operand 522686 states and 790027 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:24:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:59,841 INFO L93 Difference]: Finished difference Result 1807939 states and 2759102 transitions. [2023-12-21 14:24:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:24:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:24:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:04,335 INFO L225 Difference]: With dead ends: 1807939 [2023-12-21 14:25:04,336 INFO L226 Difference]: Without dead ends: 1322602 [2023-12-21 14:25:05,107 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 14:25:05,108 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 1362 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:05,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 1874 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322602 states. [2023-12-21 14:25:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322602 to 861944. [2023-12-21 14:25:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861944 states, 861943 states have (on average 1.5048466081863883) internal successors, (1297092), 861943 states have internal predecessors, (1297092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861944 states to 861944 states and 1297092 transitions. [2023-12-21 14:25:24,984 INFO L78 Accepts]: Start accepts. Automaton has 861944 states and 1297092 transitions. Word has length 172 [2023-12-21 14:25:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:24,984 INFO L495 AbstractCegarLoop]: Abstraction has 861944 states and 1297092 transitions. [2023-12-21 14:25:24,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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 14:25:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 861944 states and 1297092 transitions. [2023-12-21 14:25:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 14:25:25,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:25,019 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 14:25:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:25:25,019 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:25,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1534225631, now seen corresponding path program 1 times [2023-12-21 14:25:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894598807] [2023-12-21 14:25:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:25,402 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 14:25:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894598807] [2023-12-21 14:25:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894598807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:25,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:25,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:25:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102765521] [2023-12-21 14:25:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:25,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:25,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:25,419 INFO L87 Difference]: Start difference. First operand 861944 states and 1297092 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 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 14:25:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:34,002 INFO L93 Difference]: Finished difference Result 1656821 states and 2492492 transitions. [2023-12-21 14:25:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:25:34,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 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 14:25:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:36,330 INFO L225 Difference]: With dead ends: 1656821 [2023-12-21 14:25:36,331 INFO L226 Difference]: Without dead ends: 795172 [2023-12-21 14:25:37,442 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 14:25:37,444 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 975 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:37,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1081 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795172 states. [2023-12-21 14:25:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795172 to 795090. [2023-12-21 14:25:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795090 states, 795089 states have (on average 1.5037700181992204) internal successors, (1195631), 795089 states have internal predecessors, (1195631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795090 states to 795090 states and 1195631 transitions. [2023-12-21 14:25:54,565 INFO L78 Accepts]: Start accepts. Automaton has 795090 states and 1195631 transitions. Word has length 172 [2023-12-21 14:25:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:54,565 INFO L495 AbstractCegarLoop]: Abstraction has 795090 states and 1195631 transitions. [2023-12-21 14:25:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 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 14:25:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 795090 states and 1195631 transitions. [2023-12-21 14:25:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 14:25:54,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:54,595 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] [2023-12-21 14:25:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:25:54,595 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:54,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 659503743, now seen corresponding path program 1 times [2023-12-21 14:25:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319955865] [2023-12-21 14:25:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:55,352 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 14:25:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319955865] [2023-12-21 14:25:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319955865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:25:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676523455] [2023-12-21 14:25:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:55,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:55,353 INFO L87 Difference]: Start difference. First operand 795090 states and 1195631 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:00,975 INFO L93 Difference]: Finished difference Result 1182448 states and 1774055 transitions. [2023-12-21 14:26:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:26:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-21 14:26:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:03,185 INFO L225 Difference]: With dead ends: 1182448 [2023-12-21 14:26:03,186 INFO L226 Difference]: Without dead ends: 728541 [2023-12-21 14:26:04,058 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 14:26:04,059 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 21 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1371 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 14:26:04,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1371 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:26:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728541 states. [2023-12-21 14:26:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728541 to 728541. [2023-12-21 14:26:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728541 states, 728540 states have (on average 1.503159744145826) internal successors, (1095112), 728540 states have internal predecessors, (1095112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728541 states to 728541 states and 1095112 transitions. [2023-12-21 14:26:18,686 INFO L78 Accepts]: Start accepts. Automaton has 728541 states and 1095112 transitions. Word has length 174 [2023-12-21 14:26:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 728541 states and 1095112 transitions. [2023-12-21 14:26:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 728541 states and 1095112 transitions. [2023-12-21 14:26:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 14:26:18,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:18,716 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] [2023-12-21 14:26:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:26:18,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 298187663, now seen corresponding path program 1 times [2023-12-21 14:26:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321625372] [2023-12-21 14:26:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:18,813 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 14:26:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:18,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321625372] [2023-12-21 14:26:18,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321625372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:18,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:18,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:26:18,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081142048] [2023-12-21 14:26:18,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:26:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:26:18,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:26:18,815 INFO L87 Difference]: Start difference. First operand 728541 states and 1095112 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:26,886 INFO L93 Difference]: Finished difference Result 1630099 states and 2459871 transitions. [2023-12-21 14:26:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:26:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-21 14:26:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:30,200 INFO L225 Difference]: With dead ends: 1630099 [2023-12-21 14:26:30,200 INFO L226 Difference]: Without dead ends: 1293691 [2023-12-21 14:26:30,513 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 14:26:30,514 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1036 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:30,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1445 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:26:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293691 states. [2023-12-21 14:26:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293691 to 836805. [2023-12-21 14:26:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836805 states, 836804 states have (on average 1.5045016515217422) internal successors, (1258973), 836804 states have internal predecessors, (1258973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836805 states to 836805 states and 1258973 transitions. [2023-12-21 14:26:50,718 INFO L78 Accepts]: Start accepts. Automaton has 836805 states and 1258973 transitions. Word has length 177 [2023-12-21 14:26:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:50,718 INFO L495 AbstractCegarLoop]: Abstraction has 836805 states and 1258973 transitions. [2023-12-21 14:26:50,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 836805 states and 1258973 transitions. [2023-12-21 14:26:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 14:26:50,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:50,746 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] [2023-12-21 14:26:50,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:26:50,747 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:50,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -534013940, now seen corresponding path program 1 times [2023-12-21 14:26:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500356910] [2023-12-21 14:26:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:50,951 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 14:26:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500356910] [2023-12-21 14:26:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500356910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:50,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:26:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425795555] [2023-12-21 14:26:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:50,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:26:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:26:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:26:50,953 INFO L87 Difference]: Start difference. First operand 836805 states and 1258973 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:59,824 INFO L93 Difference]: Finished difference Result 1672381 states and 2516587 transitions. [2023-12-21 14:26:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:26:59,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-21 14:26:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:27:02,560 INFO L225 Difference]: With dead ends: 1672381 [2023-12-21 14:27:02,561 INFO L226 Difference]: Without dead ends: 836805 [2023-12-21 14:27:03,296 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 14:27:03,297 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1179 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 14:27:03,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 437 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]