/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:55:31,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:55:31,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:55:31,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:55:31,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:55:31,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:55:31,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:55:31,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:55:31,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:55:31,253 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:55:31,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:55:31,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:55:31,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:55:31,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:55:31,256 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:55:31,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:55:31,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:55:31,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:55:31,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:55:31,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:55:31,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:55:31,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:55:31,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:55:31,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:55:31,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:55:31,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:55:31,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:55:31,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:55:31,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:55:31,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:55:31,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:55:31,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:55:31,481 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:55:31,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:55:32,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:55:32,823 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:55:32,824 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:55:32,836 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34739602/6a0472d58d364538bacfa0e2af88d32a/FLAG8c42d2c44 [2023-12-20 03:55:32,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34739602/6a0472d58d364538bacfa0e2af88d32a [2023-12-20 03:55:32,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:55:32,859 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:55:32,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:55:32,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:55:32,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:55:32,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:55:32" (1/1) ... [2023-12-20 03:55:32,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31052c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:32, skipping insertion in model container [2023-12-20 03:55:32,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:55:32" (1/1) ... [2023-12-20 03:55:32,917 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:55:33,131 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.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13867,13880] [2023-12-20 03:55:33,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:55:33,212 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:55:33,276 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.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13867,13880] [2023-12-20 03:55:33,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:55:33,373 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:55:33,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33 WrapperNode [2023-12-20 03:55:33,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:55:33,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:55:33,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:55:33,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:55:33,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,490 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1435 [2023-12-20 03:55:33,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:55:33,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:55:33,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:55:33,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:55:33,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,547 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]. [2023-12-20 03:55:33,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:55:33,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:55:33,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:55:33,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:55:33,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (1/1) ... [2023-12-20 03:55:33,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:55:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:55:33,628 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) [2023-12-20 03:55:33,636 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 [2023-12-20 03:55:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:55:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:55:33,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:55:33,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:55:33,817 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:55:33,819 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:55:34,654 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:55:34,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:55:34,703 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:55:34,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:55:34 BoogieIcfgContainer [2023-12-20 03:55:34,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:55:34,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:55:34,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:55:34,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:55:34,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:55:32" (1/3) ... [2023-12-20 03:55:34,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b904e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:55:34, skipping insertion in model container [2023-12-20 03:55:34,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:55:33" (2/3) ... [2023-12-20 03:55:34,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b904e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:55:34, skipping insertion in model container [2023-12-20 03:55:34,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:55:34" (3/3) ... [2023-12-20 03:55:34,710 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:55:34,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:55:34,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:55:34,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:55:34,772 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;@5499375d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:55:34,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:55:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 347 states have (on average 1.792507204610951) internal successors, (622), 348 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-20 03:55:34,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:34,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:34,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:34,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1253843658, now seen corresponding path program 1 times [2023-12-20 03:55:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171983613] [2023-12-20 03:55:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171983613] [2023-12-20 03:55:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171983613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:35,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789040465] [2023-12-20 03:55:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:35,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:35,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:35,391 INFO L87 Difference]: Start difference. First operand has 349 states, 347 states have (on average 1.792507204610951) internal successors, (622), 348 states have internal predecessors, (622), 0 states have call successors, (0), 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 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:35,479 INFO L93 Difference]: Finished difference Result 651 states and 1126 transitions. [2023-12-20 03:55:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-20 03:55:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:35,496 INFO L225 Difference]: With dead ends: 651 [2023-12-20 03:55:35,498 INFO L226 Difference]: Without dead ends: 490 [2023-12-20 03:55:35,502 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 [2023-12-20 03:55:35,506 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 267 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:35,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-20 03:55:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 487. [2023-12-20 03:55:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.654320987654321) internal successors, (804), 486 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 804 transitions. [2023-12-20 03:55:35,551 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 804 transitions. Word has length 117 [2023-12-20 03:55:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:35,552 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 804 transitions. [2023-12-20 03:55:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 804 transitions. [2023-12-20 03:55:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-20 03:55:35,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:35,555 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] [2023-12-20 03:55:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:55:35,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:35,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash -705528010, now seen corresponding path program 1 times [2023-12-20 03:55:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27685517] [2023-12-20 03:55:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27685517] [2023-12-20 03:55:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27685517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040597362] [2023-12-20 03:55:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:35,751 INFO L87 Difference]: Start difference. First operand 487 states and 804 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:35,832 INFO L93 Difference]: Finished difference Result 1057 states and 1752 transitions. [2023-12-20 03:55:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:35,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-20 03:55:35,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:35,836 INFO L225 Difference]: With dead ends: 1057 [2023-12-20 03:55:35,836 INFO L226 Difference]: Without dead ends: 762 [2023-12-20 03:55:35,837 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 [2023-12-20 03:55:35,838 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 231 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:35,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1098 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2023-12-20 03:55:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 758. [2023-12-20 03:55:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 1.655217965653897) internal successors, (1253), 757 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1253 transitions. [2023-12-20 03:55:35,864 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1253 transitions. Word has length 120 [2023-12-20 03:55:35,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:35,865 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 1253 transitions. [2023-12-20 03:55:35,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1253 transitions. [2023-12-20 03:55:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-20 03:55:35,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:35,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:35,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:55:35,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:35,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1250540851, now seen corresponding path program 1 times [2023-12-20 03:55:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109276540] [2023-12-20 03:55:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109276540] [2023-12-20 03:55:36,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109276540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:36,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:36,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:36,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621612152] [2023-12-20 03:55:36,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:36,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:36,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:36,003 INFO L87 Difference]: Start difference. First operand 758 states and 1253 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:36,062 INFO L93 Difference]: Finished difference Result 1850 states and 3063 transitions. [2023-12-20 03:55:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:36,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2023-12-20 03:55:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:36,067 INFO L225 Difference]: With dead ends: 1850 [2023-12-20 03:55:36,067 INFO L226 Difference]: Without dead ends: 1284 [2023-12-20 03:55:36,068 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 [2023-12-20 03:55:36,069 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 224 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:36,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1099 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:36,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-12-20 03:55:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1278. [2023-12-20 03:55:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 1.6515270164447924) internal successors, (2109), 1277 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 2109 transitions. [2023-12-20 03:55:36,120 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 2109 transitions. Word has length 123 [2023-12-20 03:55:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:36,124 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 2109 transitions. [2023-12-20 03:55:36,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 2109 transitions. [2023-12-20 03:55:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-20 03:55:36,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:36,130 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] [2023-12-20 03:55:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:55:36,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:36,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1667165107, now seen corresponding path program 1 times [2023-12-20 03:55:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:36,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716924979] [2023-12-20 03:55:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:36,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716924979] [2023-12-20 03:55:36,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716924979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:36,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707485097] [2023-12-20 03:55:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:36,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:36,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:36,298 INFO L87 Difference]: Start difference. First operand 1278 states and 2109 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:36,343 INFO L93 Difference]: Finished difference Result 3370 states and 5559 transitions. [2023-12-20 03:55:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-20 03:55:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:36,352 INFO L225 Difference]: With dead ends: 3370 [2023-12-20 03:55:36,352 INFO L226 Difference]: Without dead ends: 2284 [2023-12-20 03:55:36,357 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 [2023-12-20 03:55:36,364 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 216 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:36,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1097 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2023-12-20 03:55:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2274. [2023-12-20 03:55:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2273 states have (on average 1.640563132424109) internal successors, (3729), 2273 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3729 transitions. [2023-12-20 03:55:36,418 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3729 transitions. Word has length 126 [2023-12-20 03:55:36,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:36,418 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3729 transitions. [2023-12-20 03:55:36,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3729 transitions. [2023-12-20 03:55:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 03:55:36,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:36,420 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] [2023-12-20 03:55:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:55:36,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:36,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2123898576, now seen corresponding path program 1 times [2023-12-20 03:55:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:36,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253723073] [2023-12-20 03:55:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253723073] [2023-12-20 03:55:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253723073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:36,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:55:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512056037] [2023-12-20 03:55:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:55:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:55:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:55:36,625 INFO L87 Difference]: Start difference. First operand 2274 states and 3729 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:36,962 INFO L93 Difference]: Finished difference Result 11926 states and 19705 transitions. [2023-12-20 03:55:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:55:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-20 03:55:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:36,995 INFO L225 Difference]: With dead ends: 11926 [2023-12-20 03:55:36,995 INFO L226 Difference]: Without dead ends: 9844 [2023-12-20 03:55:37,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 03:55:37,005 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 2047 mSDsluCounter, 5076 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:37,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 5655 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:55:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9844 states. [2023-12-20 03:55:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9844 to 4219. [2023-12-20 03:55:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 1.6403508771929824) internal successors, (6919), 4218 states have internal predecessors, (6919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 6919 transitions. [2023-12-20 03:55:37,147 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 6919 transitions. Word has length 129 [2023-12-20 03:55:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:37,148 INFO L495 AbstractCegarLoop]: Abstraction has 4219 states and 6919 transitions. [2023-12-20 03:55:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 6919 transitions. [2023-12-20 03:55:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 03:55:37,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:37,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:37,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:55:37,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:37,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1483408406, now seen corresponding path program 1 times [2023-12-20 03:55:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240551427] [2023-12-20 03:55:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:37,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:37,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240551427] [2023-12-20 03:55:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240551427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:37,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:37,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515247240] [2023-12-20 03:55:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:37,263 INFO L87 Difference]: Start difference. First operand 4219 states and 6919 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:37,350 INFO L93 Difference]: Finished difference Result 12378 states and 20400 transitions. [2023-12-20 03:55:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:37,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-20 03:55:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:37,387 INFO L225 Difference]: With dead ends: 12378 [2023-12-20 03:55:37,388 INFO L226 Difference]: Without dead ends: 8351 [2023-12-20 03:55:37,396 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 [2023-12-20 03:55:37,397 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 758 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:37,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1911 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2023-12-20 03:55:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 6268. [2023-12-20 03:55:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6268 states, 6267 states have (on average 1.642731769586724) internal successors, (10295), 6267 states have internal predecessors, (10295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 10295 transitions. [2023-12-20 03:55:37,586 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 10295 transitions. Word has length 130 [2023-12-20 03:55:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:37,586 INFO L495 AbstractCegarLoop]: Abstraction has 6268 states and 10295 transitions. [2023-12-20 03:55:37,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 10295 transitions. [2023-12-20 03:55:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 03:55:37,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:37,589 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] [2023-12-20 03:55:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:55:37,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1196475703, now seen corresponding path program 1 times [2023-12-20 03:55:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914708153] [2023-12-20 03:55:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:37,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:37,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914708153] [2023-12-20 03:55:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914708153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:37,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020807287] [2023-12-20 03:55:37,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:37,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:37,718 INFO L87 Difference]: Start difference. First operand 6268 states and 10295 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:37,836 INFO L93 Difference]: Finished difference Result 18420 states and 30328 transitions. [2023-12-20 03:55:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-20 03:55:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:37,863 INFO L225 Difference]: With dead ends: 18420 [2023-12-20 03:55:37,864 INFO L226 Difference]: Without dead ends: 12344 [2023-12-20 03:55:37,878 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 [2023-12-20 03:55:37,880 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 758 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:37,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1900 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2023-12-20 03:55:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 9282. [2023-12-20 03:55:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 9281 states have (on average 1.641094709621808) internal successors, (15231), 9281 states have internal predecessors, (15231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 15231 transitions. [2023-12-20 03:55:38,071 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 15231 transitions. Word has length 131 [2023-12-20 03:55:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 9282 states and 15231 transitions. [2023-12-20 03:55:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 15231 transitions. [2023-12-20 03:55:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 03:55:38,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:38,076 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] [2023-12-20 03:55:38,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:55:38,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:38,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1621904815, now seen corresponding path program 1 times [2023-12-20 03:55:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086898995] [2023-12-20 03:55:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086898995] [2023-12-20 03:55:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086898995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:38,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810094594] [2023-12-20 03:55:38,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:38,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:38,233 INFO L87 Difference]: Start difference. First operand 9282 states and 15231 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:38,347 INFO L93 Difference]: Finished difference Result 27308 states and 44916 transitions. [2023-12-20 03:55:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:38,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-20 03:55:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:38,380 INFO L225 Difference]: With dead ends: 27308 [2023-12-20 03:55:38,380 INFO L226 Difference]: Without dead ends: 18218 [2023-12-20 03:55:38,394 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 [2023-12-20 03:55:38,395 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 756 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:38,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1829 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:38,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18218 states. [2023-12-20 03:55:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18218 to 13716. [2023-12-20 03:55:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13716 states, 13715 states have (on average 1.6394458621946773) internal successors, (22485), 13715 states have internal predecessors, (22485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13716 states to 13716 states and 22485 transitions. [2023-12-20 03:55:38,634 INFO L78 Accepts]: Start accepts. Automaton has 13716 states and 22485 transitions. Word has length 132 [2023-12-20 03:55:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:38,635 INFO L495 AbstractCegarLoop]: Abstraction has 13716 states and 22485 transitions. [2023-12-20 03:55:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 13716 states and 22485 transitions. [2023-12-20 03:55:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:55:38,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:38,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:55:38,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:38,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1796430653, now seen corresponding path program 1 times [2023-12-20 03:55:38,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910430293] [2023-12-20 03:55:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:38,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:38,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910430293] [2023-12-20 03:55:38,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910430293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:38,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:38,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125880579] [2023-12-20 03:55:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:38,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:38,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:38,708 INFO L87 Difference]: Start difference. First operand 13716 states and 22485 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:38,855 INFO L93 Difference]: Finished difference Result 30563 states and 50299 transitions. [2023-12-20 03:55:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 03:55:38,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:38,891 INFO L225 Difference]: With dead ends: 30563 [2023-12-20 03:55:38,891 INFO L226 Difference]: Without dead ends: 21068 [2023-12-20 03:55:38,908 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 [2023-12-20 03:55:38,909 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 237 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:38,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1293 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21068 states. [2023-12-20 03:55:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21068 to 21066. [2023-12-20 03:55:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 21065 states have (on average 1.6386897697602658) internal successors, (34519), 21065 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 34519 transitions. [2023-12-20 03:55:39,202 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 34519 transitions. Word has length 133 [2023-12-20 03:55:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:39,203 INFO L495 AbstractCegarLoop]: Abstraction has 21066 states and 34519 transitions. [2023-12-20 03:55:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 34519 transitions. [2023-12-20 03:55:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:55:39,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:39,206 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] [2023-12-20 03:55:39,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:55:39,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 931532829, now seen corresponding path program 1 times [2023-12-20 03:55:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653460217] [2023-12-20 03:55:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:39,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:39,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653460217] [2023-12-20 03:55:39,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653460217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:39,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:39,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686589216] [2023-12-20 03:55:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:39,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:39,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:39,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:39,302 INFO L87 Difference]: Start difference. First operand 21066 states and 34519 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:39,647 INFO L93 Difference]: Finished difference Result 46559 states and 76367 transitions. [2023-12-20 03:55:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 03:55:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:39,731 INFO L225 Difference]: With dead ends: 46559 [2023-12-20 03:55:39,731 INFO L226 Difference]: Without dead ends: 32026 [2023-12-20 03:55:39,764 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 [2023-12-20 03:55:39,765 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 230 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1268 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32026 states. [2023-12-20 03:55:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32026 to 32024. [2023-12-20 03:55:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32024 states, 32023 states have (on average 1.633825687786903) internal successors, (52320), 32023 states have internal predecessors, (52320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32024 states to 32024 states and 52320 transitions. [2023-12-20 03:55:40,466 INFO L78 Accepts]: Start accepts. Automaton has 32024 states and 52320 transitions. Word has length 133 [2023-12-20 03:55:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 32024 states and 52320 transitions. [2023-12-20 03:55:40,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 32024 states and 52320 transitions. [2023-12-20 03:55:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:55:40,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:40,468 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] [2023-12-20 03:55:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:55:40,468 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:40,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1207170366, now seen corresponding path program 1 times [2023-12-20 03:55:40,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888755671] [2023-12-20 03:55:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:40,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:40,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888755671] [2023-12-20 03:55:40,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888755671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:40,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:40,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:40,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689355213] [2023-12-20 03:55:40,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:40,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:40,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:40,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:40,553 INFO L87 Difference]: Start difference. First operand 32024 states and 52320 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:41,025 INFO L93 Difference]: Finished difference Result 95012 states and 155764 transitions. [2023-12-20 03:55:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 03:55:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:41,233 INFO L225 Difference]: With dead ends: 95012 [2023-12-20 03:55:41,233 INFO L226 Difference]: Without dead ends: 63204 [2023-12-20 03:55:41,275 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 [2023-12-20 03:55:41,276 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 754 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:41,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1909 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63204 states. [2023-12-20 03:55:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63204 to 47480. [2023-12-20 03:55:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47480 states, 47479 states have (on average 1.6328692685187136) internal successors, (77527), 47479 states have internal predecessors, (77527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47480 states to 47480 states and 77527 transitions. [2023-12-20 03:55:42,193 INFO L78 Accepts]: Start accepts. Automaton has 47480 states and 77527 transitions. Word has length 133 [2023-12-20 03:55:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 47480 states and 77527 transitions. [2023-12-20 03:55:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 47480 states and 77527 transitions. [2023-12-20 03:55:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 03:55:42,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:42,195 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] [2023-12-20 03:55:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:55:42,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:42,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 630738377, now seen corresponding path program 1 times [2023-12-20 03:55:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78999594] [2023-12-20 03:55:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78999594] [2023-12-20 03:55:42,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78999594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:42,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405920248] [2023-12-20 03:55:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:42,251 INFO L87 Difference]: Start difference. First operand 47480 states and 77527 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:42,726 INFO L93 Difference]: Finished difference Result 104867 states and 171377 transitions. [2023-12-20 03:55:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 03:55:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:42,845 INFO L225 Difference]: With dead ends: 104867 [2023-12-20 03:55:42,846 INFO L226 Difference]: Without dead ends: 71738 [2023-12-20 03:55:42,896 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 [2023-12-20 03:55:42,897 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 223 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:42,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71738 states. [2023-12-20 03:55:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71738 to 71736. [2023-12-20 03:55:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71736 states, 71735 states have (on average 1.6268627587648985) internal successors, (116703), 71735 states have internal predecessors, (116703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71736 states to 71736 states and 116703 transitions. [2023-12-20 03:55:44,222 INFO L78 Accepts]: Start accepts. Automaton has 71736 states and 116703 transitions. Word has length 133 [2023-12-20 03:55:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:44,222 INFO L495 AbstractCegarLoop]: Abstraction has 71736 states and 116703 transitions. [2023-12-20 03:55:44,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 71736 states and 116703 transitions. [2023-12-20 03:55:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 03:55:44,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:44,225 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] [2023-12-20 03:55:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:55:44,226 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1184073123, now seen corresponding path program 1 times [2023-12-20 03:55:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270755831] [2023-12-20 03:55:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:44,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:44,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:44,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270755831] [2023-12-20 03:55:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270755831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:44,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:44,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:55:44,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639442675] [2023-12-20 03:55:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:44,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:55:44,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:55:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:55:44,282 INFO L87 Difference]: Start difference. First operand 71736 states and 116703 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:44,992 INFO L93 Difference]: Finished difference Result 156754 states and 255330 transitions. [2023-12-20 03:55:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:55:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-20 03:55:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:45,178 INFO L225 Difference]: With dead ends: 156754 [2023-12-20 03:55:45,178 INFO L226 Difference]: Without dead ends: 106562 [2023-12-20 03:55:45,221 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 [2023-12-20 03:55:45,222 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 214 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:45,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1200 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106562 states. [2023-12-20 03:55:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106562 to 106560. [2023-12-20 03:55:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106560 states, 106559 states have (on average 1.6191687234302123) internal successors, (172537), 106559 states have internal predecessors, (172537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:47,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106560 states to 106560 states and 172537 transitions. [2023-12-20 03:55:47,111 INFO L78 Accepts]: Start accepts. Automaton has 106560 states and 172537 transitions. Word has length 134 [2023-12-20 03:55:47,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:47,111 INFO L495 AbstractCegarLoop]: Abstraction has 106560 states and 172537 transitions. [2023-12-20 03:55:47,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:47,111 INFO L276 IsEmpty]: Start isEmpty. Operand 106560 states and 172537 transitions. [2023-12-20 03:55:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 03:55:47,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:47,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:47,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:55:47,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:47,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1067752401, now seen corresponding path program 1 times [2023-12-20 03:55:47,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:47,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364198284] [2023-12-20 03:55:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:47,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:47,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:47,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364198284] [2023-12-20 03:55:47,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364198284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:47,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:47,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:55:47,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7871759] [2023-12-20 03:55:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:47,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:55:47,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:55:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:55:47,324 INFO L87 Difference]: Start difference. First operand 106560 states and 172537 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:48,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:48,264 INFO L93 Difference]: Finished difference Result 212862 states and 344659 transitions. [2023-12-20 03:55:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:55:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 03:55:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:48,435 INFO L225 Difference]: With dead ends: 212862 [2023-12-20 03:55:48,435 INFO L226 Difference]: Without dead ends: 106562 [2023-12-20 03:55:48,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:55:48,507 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 660 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:48,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 2181 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:55:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106562 states. [2023-12-20 03:55:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106562 to 106560. [2023-12-20 03:55:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106560 states, 106559 states have (on average 1.6133034281477867) internal successors, (171912), 106559 states have internal predecessors, (171912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106560 states to 106560 states and 171912 transitions. [2023-12-20 03:55:50,363 INFO L78 Accepts]: Start accepts. Automaton has 106560 states and 171912 transitions. Word has length 135 [2023-12-20 03:55:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:50,363 INFO L495 AbstractCegarLoop]: Abstraction has 106560 states and 171912 transitions. [2023-12-20 03:55:50,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand 106560 states and 171912 transitions. [2023-12-20 03:55:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 03:55:50,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:50,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:50,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:55:50,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:50,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1362654499, now seen corresponding path program 1 times [2023-12-20 03:55:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947859314] [2023-12-20 03:55:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947859314] [2023-12-20 03:55:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947859314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:50,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:50,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:55:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533166159] [2023-12-20 03:55:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:55:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:55:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:55:50,585 INFO L87 Difference]: Start difference. First operand 106560 states and 171912 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:51,655 INFO L93 Difference]: Finished difference Result 311502 states and 503007 transitions. [2023-12-20 03:55:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:55:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-20 03:55:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:52,365 INFO L225 Difference]: With dead ends: 311502 [2023-12-20 03:55:52,365 INFO L226 Difference]: Without dead ends: 205202 [2023-12-20 03:55:52,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:55:52,436 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 220 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:52,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2732 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205202 states. [2023-12-20 03:55:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205202 to 205200. [2023-12-20 03:55:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205200 states, 205199 states have (on average 1.6057241994356697) internal successors, (329493), 205199 states have internal predecessors, (329493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205200 states to 205200 states and 329493 transitions. [2023-12-20 03:55:55,820 INFO L78 Accepts]: Start accepts. Automaton has 205200 states and 329493 transitions. Word has length 138 [2023-12-20 03:55:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:55,820 INFO L495 AbstractCegarLoop]: Abstraction has 205200 states and 329493 transitions. [2023-12-20 03:55:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 205200 states and 329493 transitions. [2023-12-20 03:55:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-20 03:55:55,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:55,821 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] [2023-12-20 03:55:55,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:55:55,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:55,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash -709292564, now seen corresponding path program 1 times [2023-12-20 03:55:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994534649] [2023-12-20 03:55:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994534649] [2023-12-20 03:55:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994534649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:56,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:56,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:55:56,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102503102] [2023-12-20 03:55:56,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:56,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:55:56,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:56,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:55:56,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:55:56,107 INFO L87 Difference]: Start difference. First operand 205200 states and 329493 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:57,754 INFO L93 Difference]: Finished difference Result 389159 states and 623038 transitions. [2023-12-20 03:55:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:55:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-20 03:55:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:58,491 INFO L225 Difference]: With dead ends: 389159 [2023-12-20 03:55:58,491 INFO L226 Difference]: Without dead ends: 389157 [2023-12-20 03:55:58,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:55:58,620 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 490 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:58,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2589 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389157 states. [2023-12-20 03:56:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389157 to 209072. [2023-12-20 03:56:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209072 states, 209071 states have (on average 1.5943770298128388) internal successors, (333338), 209071 states have internal predecessors, (333338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209072 states to 209072 states and 333338 transitions. [2023-12-20 03:56:03,327 INFO L78 Accepts]: Start accepts. Automaton has 209072 states and 333338 transitions. Word has length 139 [2023-12-20 03:56:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:03,328 INFO L495 AbstractCegarLoop]: Abstraction has 209072 states and 333338 transitions. [2023-12-20 03:56:03,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 209072 states and 333338 transitions. [2023-12-20 03:56:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:56:03,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:03,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:56:03,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:56:03,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:03,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:03,360 INFO L85 PathProgramCache]: Analyzing trace with hash -181794411, now seen corresponding path program 1 times [2023-12-20 03:56:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:03,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173842145] [2023-12-20 03:56:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:56:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173842145] [2023-12-20 03:56:03,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173842145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:03,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:03,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:56:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028072789] [2023-12-20 03:56:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:56:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:03,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:56:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:56:03,569 INFO L87 Difference]: Start difference. First operand 209072 states and 333338 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 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) [2023-12-20 03:56:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:05,893 INFO L93 Difference]: Finished difference Result 570402 states and 912111 transitions. [2023-12-20 03:56:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:56:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 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 175 [2023-12-20 03:56:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:07,110 INFO L225 Difference]: With dead ends: 570402 [2023-12-20 03:56:07,110 INFO L226 Difference]: Without dead ends: 477400 [2023-12-20 03:56:07,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:56:07,786 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 1519 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 3701 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:07,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 3701 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:56:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477400 states. [2023-12-20 03:56:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477400 to 336136. [2023-12-20 03:56:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336136 states, 336135 states have (on average 1.5929076115251313) internal successors, (535432), 336135 states have internal predecessors, (535432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336136 states to 336136 states and 535432 transitions. [2023-12-20 03:56:14,399 INFO L78 Accepts]: Start accepts. Automaton has 336136 states and 535432 transitions. Word has length 175 [2023-12-20 03:56:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:14,401 INFO L495 AbstractCegarLoop]: Abstraction has 336136 states and 535432 transitions. [2023-12-20 03:56:14,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 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) [2023-12-20 03:56:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 336136 states and 535432 transitions. [2023-12-20 03:56:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:56:14,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:14,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:56:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:56:14,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1046692235, now seen corresponding path program 1 times [2023-12-20 03:56:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975834391] [2023-12-20 03:56:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:56:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975834391] [2023-12-20 03:56:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975834391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:14,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:14,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:56:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788139223] [2023-12-20 03:56:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:56:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:56:14,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:56:14,701 INFO L87 Difference]: Start difference. First operand 336136 states and 535432 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 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) [2023-12-20 03:56:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:18,236 INFO L93 Difference]: Finished difference Result 641804 states and 1026411 transitions. [2023-12-20 03:56:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:56:18,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 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 175 [2023-12-20 03:56:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:19,869 INFO L225 Difference]: With dead ends: 641804 [2023-12-20 03:56:19,869 INFO L226 Difference]: Without dead ends: 549952 [2023-12-20 03:56:20,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:56:20,036 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 1519 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:20,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 3608 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:56:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549952 states. [2023-12-20 03:56:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549952 to 454452. [2023-12-20 03:56:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454452 states, 454451 states have (on average 1.5941740693716153) internal successors, (724474), 454451 states have internal predecessors, (724474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454452 states to 454452 states and 724474 transitions. [2023-12-20 03:56:28,518 INFO L78 Accepts]: Start accepts. Automaton has 454452 states and 724474 transitions. Word has length 175 [2023-12-20 03:56:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 454452 states and 724474 transitions. [2023-12-20 03:56:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 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) [2023-12-20 03:56:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 454452 states and 724474 transitions. [2023-12-20 03:56:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:56:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:28,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:56:28,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:56:28,524 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:28,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1347486687, now seen corresponding path program 1 times [2023-12-20 03:56:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798549720] [2023-12-20 03:56:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 03:56:28,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:28,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798549720] [2023-12-20 03:56:28,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798549720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:28,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:56:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142719430] [2023-12-20 03:56:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:56:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:56:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:56:28,717 INFO L87 Difference]: Start difference. First operand 454452 states and 724474 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:31,909 INFO L93 Difference]: Finished difference Result 700180 states and 1119975 transitions. [2023-12-20 03:56:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:56:31,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-20 03:56:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:33,577 INFO L225 Difference]: With dead ends: 700180 [2023-12-20 03:56:33,577 INFO L226 Difference]: Without dead ends: 608328 [2023-12-20 03:56:33,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:56:33,771 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1618 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:33,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3608 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:56:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608328 states. [2023-12-20 03:56:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608328 to 526268. [2023-12-20 03:56:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526268 states, 526267 states have (on average 1.5953232864686557) internal successors, (839566), 526267 states have internal predecessors, (839566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526268 states to 526268 states and 839566 transitions. [2023-12-20 03:56:44,693 INFO L78 Accepts]: Start accepts. Automaton has 526268 states and 839566 transitions. Word has length 175 [2023-12-20 03:56:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:44,694 INFO L495 AbstractCegarLoop]: Abstraction has 526268 states and 839566 transitions. [2023-12-20 03:56:44,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 526268 states and 839566 transitions. [2023-12-20 03:56:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:56:44,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:44,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:56:44,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:56:44,699 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:44,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:44,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1407721435, now seen corresponding path program 1 times [2023-12-20 03:56:44,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:44,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002825633] [2023-12-20 03:56:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:44,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:56:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002825633] [2023-12-20 03:56:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002825633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:44,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:44,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:56:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955692233] [2023-12-20 03:56:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:44,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:56:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:56:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:56:44,825 INFO L87 Difference]: Start difference. First operand 526268 states and 839566 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:48,421 INFO L93 Difference]: Finished difference Result 848025 states and 1356857 transitions. [2023-12-20 03:56:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:56:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2023-12-20 03:56:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:49,980 INFO L225 Difference]: With dead ends: 848025 [2023-12-20 03:56:49,981 INFO L226 Difference]: Without dead ends: 682471 [2023-12-20 03:56:50,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:56:50,200 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 450 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:50,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1624 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:56:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682471 states. [2023-12-20 03:56:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682471 to 636795. [2023-12-20 03:56:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636795 states, 636794 states have (on average 1.5952254575262959) internal successors, (1015830), 636794 states have internal predecessors, (1015830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636795 states to 636795 states and 1015830 transitions. [2023-12-20 03:57:02,767 INFO L78 Accepts]: Start accepts. Automaton has 636795 states and 1015830 transitions. Word has length 176 [2023-12-20 03:57:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:57:02,768 INFO L495 AbstractCegarLoop]: Abstraction has 636795 states and 1015830 transitions. [2023-12-20 03:57:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 636795 states and 1015830 transitions. [2023-12-20 03:57:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:57:02,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:57:02,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:57:02,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:57:02,789 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:57:02,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:57:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1273029157, now seen corresponding path program 1 times [2023-12-20 03:57:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:57:02,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691902488] [2023-12-20 03:57:02,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:57:02,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:57:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:57:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:57:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:57:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691902488] [2023-12-20 03:57:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691902488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:57:02,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:57:02,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:57:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84621592] [2023-12-20 03:57:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:57:02,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:57:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:57:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:57:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:57:02,919 INFO L87 Difference]: Start difference. First operand 636795 states and 1015830 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:57:09,167 INFO L93 Difference]: Finished difference Result 1358639 states and 2171943 transitions. [2023-12-20 03:57:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:57:09,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2023-12-20 03:57:09,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:57:12,594 INFO L225 Difference]: With dead ends: 1358639 [2023-12-20 03:57:12,594 INFO L226 Difference]: Without dead ends: 1072825 [2023-12-20 03:57:13,455 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 [2023-12-20 03:57:13,456 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 207 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:57:13,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1090 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:57:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072825 states. [2023-12-20 03:57:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072825 to 1071335. [2023-12-20 03:57:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071335 states, 1071334 states have (on average 1.5955528341301592) internal successors, (1709370), 1071334 states have internal predecessors, (1709370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071335 states to 1071335 states and 1709370 transitions. [2023-12-20 03:57:35,435 INFO L78 Accepts]: Start accepts. Automaton has 1071335 states and 1709370 transitions. Word has length 176 [2023-12-20 03:57:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:57:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 1071335 states and 1709370 transitions. [2023-12-20 03:57:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1071335 states and 1709370 transitions. [2023-12-20 03:57:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:57:35,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:57:35,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:57:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:57:35,441 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:57:35,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:57:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -11361717, now seen corresponding path program 1 times [2023-12-20 03:57:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:57:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271933071] [2023-12-20 03:57:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:57:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:57:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:57:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 03:57:35,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:57:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271933071] [2023-12-20 03:57:35,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271933071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:57:35,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:57:35,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:57:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347770183] [2023-12-20 03:57:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:57:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:57:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:57:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:57:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:57:35,776 INFO L87 Difference]: Start difference. First operand 1071335 states and 1709370 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 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) [2023-12-20 03:57:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:57:44,034 INFO L93 Difference]: Finished difference Result 1476042 states and 2360938 transitions. [2023-12-20 03:57:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:57:44,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 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 176 [2023-12-20 03:57:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:57:48,874 INFO L225 Difference]: With dead ends: 1476042 [2023-12-20 03:57:48,874 INFO L226 Difference]: Without dead ends: 1310610 [2023-12-20 03:57:50,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:57:50,201 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1533 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:57:50,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 3322 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:57:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310610 states. [2023-12-20 03:58:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310610 to 1193271. [2023-12-20 03:58:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193271 states, 1193270 states have (on average 1.5962372304675387) internal successors, (1904742), 1193270 states have internal predecessors, (1904742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:58:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193271 states to 1193271 states and 1904742 transitions. [2023-12-20 03:58:14,970 INFO L78 Accepts]: Start accepts. Automaton has 1193271 states and 1904742 transitions. Word has length 176 [2023-12-20 03:58:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:58:14,970 INFO L495 AbstractCegarLoop]: Abstraction has 1193271 states and 1904742 transitions. [2023-12-20 03:58:14,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 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) [2023-12-20 03:58:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1193271 states and 1904742 transitions. [2023-12-20 03:58:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 03:58:14,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:58:14,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:58:14,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:58:14,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:58:14,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:58:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash 352597021, now seen corresponding path program 1 times [2023-12-20 03:58:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:58:14,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266402342] [2023-12-20 03:58:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:58:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:58:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:58:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:58:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:58:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266402342] [2023-12-20 03:58:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266402342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:58:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:58:15,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:58:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154433135] [2023-12-20 03:58:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:58:15,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:58:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL