/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:31:55,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:31:55,960 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 02:31:55,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:31:55,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:31:55,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:31:55,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:31:55,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:31:55,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:31:55,993 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:31:55,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:31:55,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:31:55,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:31:55,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:31:55,995 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:31:55,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:31:55,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:31:55,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:31:55,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:31:55,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:31:55,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:31:55,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:31:55,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:31:55,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:31:55,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:31:55,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:31:55,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:31:55,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:31:56,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:31:56,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:31:56,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:31:56,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:31:56,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:31:56,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:31:56,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:31:56,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:31:56,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:31:56,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:31:56,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:31:56,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:31:56,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:31:56,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:31:56,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:31:56,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:31:56,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:31:56,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:31:56,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:31:56,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:31:56,206 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:31:56,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-12-20 02:31:57,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:31:57,558 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:31:57,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-12-20 02:31:57,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/776a7301b/64cf4ed3af4844fc8aa241339113c5cd/FLAG7b79bba15 [2023-12-20 02:31:57,589 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/776a7301b/64cf4ed3af4844fc8aa241339113c5cd [2023-12-20 02:31:57,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:31:57,593 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:31:57,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:31:57,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:31:57,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:31:57,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:31:57" (1/1) ... [2023-12-20 02:31:57,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244da50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:57, skipping insertion in model container [2023-12-20 02:31:57,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:31:57" (1/1) ... [2023-12-20 02:31:57,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:31:57,935 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[24514,24527] [2023-12-20 02:31:58,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:31:58,067 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:31:58,257 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[24514,24527] [2023-12-20 02:31:58,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:31:58,335 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:31:58,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58 WrapperNode [2023-12-20 02:31:58,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:31:58,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:31:58,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:31:58,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:31:58,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,454 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2299 [2023-12-20 02:31:58,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:31:58,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:31:58,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:31:58,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:31:58,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,477 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,517 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 02:31:58,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:31:58,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:31:58,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:31:58,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:31:58,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (1/1) ... [2023-12-20 02:31:58,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:31:58,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:31:58,603 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 02:31:58,611 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 02:31:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:31:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:31:58,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:31:58,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:31:58,754 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:31:58,756 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:31:59,762 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:31:59,802 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:31:59,802 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:31:59,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:31:59 BoogieIcfgContainer [2023-12-20 02:31:59,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:31:59,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:31:59,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:31:59,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:31:59,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:31:57" (1/3) ... [2023-12-20 02:31:59,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eebb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:31:59, skipping insertion in model container [2023-12-20 02:31:59,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:31:58" (2/3) ... [2023-12-20 02:31:59,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eebb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:31:59, skipping insertion in model container [2023-12-20 02:31:59,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:31:59" (3/3) ... [2023-12-20 02:31:59,810 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-12-20 02:31:59,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:31:59,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:31:59,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:31:59,879 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;@3c448c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:31:59,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:31:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 577 states have (on average 1.7937608318890814) internal successors, (1035), 578 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 02:31:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-20 02:31:59,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:31:59,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:31:59,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:31:59,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:31:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1894497629, now seen corresponding path program 1 times [2023-12-20 02:31:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:31:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211159452] [2023-12-20 02:31:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:31:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:00,510 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 02:32:00,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:00,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211159452] [2023-12-20 02:32:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211159452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:00,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194054654] [2023-12-20 02:32:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:00,538 INFO L87 Difference]: Start difference. First operand has 579 states, 577 states have (on average 1.7937608318890814) internal successors, (1035), 578 states have internal predecessors, (1035), 0 states have call successors, (0), 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 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:32:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:00,651 INFO L93 Difference]: Finished difference Result 1047 states and 1859 transitions. [2023-12-20 02:32:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:00,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-12-20 02:32:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:00,665 INFO L225 Difference]: With dead ends: 1047 [2023-12-20 02:32:00,665 INFO L226 Difference]: Without dead ends: 877 [2023-12-20 02:32:00,668 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 02:32:00,670 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 575 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:00,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1787 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-12-20 02:32:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 875. [2023-12-20 02:32:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.5766590389016018) internal successors, (1378), 874 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states 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 02:32:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1378 transitions. [2023-12-20 02:32:00,726 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1378 transitions. Word has length 233 [2023-12-20 02:32:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:00,727 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1378 transitions. [2023-12-20 02:32:00,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:32:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1378 transitions. [2023-12-20 02:32:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-20 02:32:00,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:00,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:00,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:32:00,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:00,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:00,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1417478853, now seen corresponding path program 1 times [2023-12-20 02:32:00,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:00,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888707774] [2023-12-20 02:32:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:00,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:01,354 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 02:32:01,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:01,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888707774] [2023-12-20 02:32:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888707774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:01,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983876406] [2023-12-20 02:32:01,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:32:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:32:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:32:01,363 INFO L87 Difference]: Start difference. First operand 875 states and 1378 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:32:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:01,498 INFO L93 Difference]: Finished difference Result 2581 states and 4059 transitions. [2023-12-20 02:32:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2023-12-20 02:32:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:01,504 INFO L225 Difference]: With dead ends: 2581 [2023-12-20 02:32:01,504 INFO L226 Difference]: Without dead ends: 1716 [2023-12-20 02:32:01,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:01,507 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 1985 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:01,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 2295 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-20 02:32:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1714. [2023-12-20 02:32:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.5650904845300642) internal successors, (2681), 1713 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states 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 02:32:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2681 transitions. [2023-12-20 02:32:01,542 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2681 transitions. Word has length 233 [2023-12-20 02:32:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:01,543 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2681 transitions. [2023-12-20 02:32:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:32:01,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2681 transitions. [2023-12-20 02:32:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-20 02:32:01,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:01,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:32:01,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:01,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1169059184, now seen corresponding path program 1 times [2023-12-20 02:32:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508008786] [2023-12-20 02:32:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:01,664 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 02:32:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508008786] [2023-12-20 02:32:01,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508008786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:01,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:01,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:01,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331242635] [2023-12-20 02:32:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:01,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:01,667 INFO L87 Difference]: Start difference. First operand 1714 states and 2681 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:32:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:01,740 INFO L93 Difference]: Finished difference Result 4957 states and 7721 transitions. [2023-12-20 02:32:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-20 02:32:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:01,750 INFO L225 Difference]: With dead ends: 4957 [2023-12-20 02:32:01,751 INFO L226 Difference]: Without dead ends: 3367 [2023-12-20 02:32:01,754 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 02:32:01,754 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 774 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:01,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2563 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:01,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2023-12-20 02:32:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3365. [2023-12-20 02:32:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3364 states have (on average 1.555885850178359) internal successors, (5234), 3364 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states 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 02:32:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 5234 transitions. [2023-12-20 02:32:01,863 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 5234 transitions. Word has length 235 [2023-12-20 02:32:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:01,866 INFO L495 AbstractCegarLoop]: Abstraction has 3365 states and 5234 transitions. [2023-12-20 02:32:01,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:32:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 5234 transitions. [2023-12-20 02:32:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-20 02:32:01,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:01,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:01,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:32:01,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:01,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1634807115, now seen corresponding path program 1 times [2023-12-20 02:32:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137287674] [2023-12-20 02:32:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:01,954 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 02:32:01,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137287674] [2023-12-20 02:32:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137287674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:01,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948390093] [2023-12-20 02:32:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:01,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:01,956 INFO L87 Difference]: Start difference. First operand 3365 states and 5234 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:32:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:02,008 INFO L93 Difference]: Finished difference Result 10030 states and 15588 transitions. [2023-12-20 02:32:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-20 02:32:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:02,029 INFO L225 Difference]: With dead ends: 10030 [2023-12-20 02:32:02,029 INFO L226 Difference]: Without dead ends: 6702 [2023-12-20 02:32:02,037 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 02:32:02,042 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 893 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:02,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 2683 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2023-12-20 02:32:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 3384. [2023-12-20 02:32:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 3383 states have (on average 1.5554241797221402) internal successors, (5262), 3383 states have internal predecessors, (5262), 0 states have call successors, (0), 0 states 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 02:32:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 5262 transitions. [2023-12-20 02:32:02,140 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 5262 transitions. Word has length 235 [2023-12-20 02:32:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:02,141 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 5262 transitions. [2023-12-20 02:32:02,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:32:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 5262 transitions. [2023-12-20 02:32:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-20 02:32:02,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:02,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:32:02,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:02,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash -201347429, now seen corresponding path program 1 times [2023-12-20 02:32:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:02,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803467620] [2023-12-20 02:32:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:02,222 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 02:32:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803467620] [2023-12-20 02:32:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803467620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:02,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:02,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:02,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431791403] [2023-12-20 02:32:02,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:02,226 INFO L87 Difference]: Start difference. First operand 3384 states and 5262 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 02:32:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:02,278 INFO L93 Difference]: Finished difference Result 10049 states and 15609 transitions. [2023-12-20 02:32:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 236 [2023-12-20 02:32:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:02,296 INFO L225 Difference]: With dead ends: 10049 [2023-12-20 02:32:02,296 INFO L226 Difference]: Without dead ends: 6720 [2023-12-20 02:32:02,301 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 02:32:02,301 INFO L413 NwaCegarLoop]: 1790 mSDtfsCounter, 888 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:02,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 2683 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2023-12-20 02:32:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 3402. [2023-12-20 02:32:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 1.5533666568656277) internal successors, (5283), 3401 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states 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 02:32:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 5283 transitions. [2023-12-20 02:32:02,380 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 5283 transitions. Word has length 236 [2023-12-20 02:32:02,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:02,380 INFO L495 AbstractCegarLoop]: Abstraction has 3402 states and 5283 transitions. [2023-12-20 02:32:02,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 02:32:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 5283 transitions. [2023-12-20 02:32:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-20 02:32:02,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:02,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:02,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:32:02,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:02,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:02,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1731188629, now seen corresponding path program 1 times [2023-12-20 02:32:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:02,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512338261] [2023-12-20 02:32:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:02,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:02,497 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 02:32:02,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:02,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512338261] [2023-12-20 02:32:02,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512338261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:02,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:02,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895692272] [2023-12-20 02:32:02,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:02,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:02,499 INFO L87 Difference]: Start difference. First operand 3402 states and 5283 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:32:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:02,594 INFO L93 Difference]: Finished difference Result 9749 states and 15076 transitions. [2023-12-20 02:32:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:02,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-20 02:32:02,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:02,627 INFO L225 Difference]: With dead ends: 9749 [2023-12-20 02:32:02,627 INFO L226 Difference]: Without dead ends: 6587 [2023-12-20 02:32:02,633 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 02:32:02,634 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 767 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:02,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 2625 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6587 states. [2023-12-20 02:32:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6587 to 6585. [2023-12-20 02:32:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 6584 states have (on average 1.541767922235723) internal successors, (10151), 6584 states have internal predecessors, (10151), 0 states have call successors, (0), 0 states 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 02:32:02,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 10151 transitions. [2023-12-20 02:32:02,782 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 10151 transitions. Word has length 237 [2023-12-20 02:32:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 6585 states and 10151 transitions. [2023-12-20 02:32:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:32:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 10151 transitions. [2023-12-20 02:32:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-20 02:32:02,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:02,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:32:02,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:02,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1887421192, now seen corresponding path program 1 times [2023-12-20 02:32:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197459496] [2023-12-20 02:32:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:03,134 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 02:32:03,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197459496] [2023-12-20 02:32:03,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197459496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:03,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:03,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:32:03,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959419031] [2023-12-20 02:32:03,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:03,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:32:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:03,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:32:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:03,136 INFO L87 Difference]: Start difference. First operand 6585 states and 10151 transitions. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:32:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:03,262 INFO L93 Difference]: Finished difference Result 19227 states and 29584 transitions. [2023-12-20 02:32:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:03,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-20 02:32:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:03,282 INFO L225 Difference]: With dead ends: 19227 [2023-12-20 02:32:03,282 INFO L226 Difference]: Without dead ends: 12696 [2023-12-20 02:32:03,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:03,339 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 1738 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:03,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 3145 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2023-12-20 02:32:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12694. [2023-12-20 02:32:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12694 states, 12693 states have (on average 1.5277712124793192) internal successors, (19392), 12693 states have internal predecessors, (19392), 0 states have call successors, (0), 0 states 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 02:32:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12694 states to 12694 states and 19392 transitions. [2023-12-20 02:32:03,545 INFO L78 Accepts]: Start accepts. Automaton has 12694 states and 19392 transitions. Word has length 237 [2023-12-20 02:32:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:03,545 INFO L495 AbstractCegarLoop]: Abstraction has 12694 states and 19392 transitions. [2023-12-20 02:32:03,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:32:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 12694 states and 19392 transitions. [2023-12-20 02:32:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 02:32:03,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:03,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:03,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:32:03,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:03,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash -578592314, now seen corresponding path program 1 times [2023-12-20 02:32:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585358900] [2023-12-20 02:32:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:03,975 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 02:32:03,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585358900] [2023-12-20 02:32:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585358900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:03,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:32:03,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779960379] [2023-12-20 02:32:03,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:03,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:32:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:03,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:32:03,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:03,977 INFO L87 Difference]: Start difference. First operand 12694 states and 19392 transitions. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 02:32:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:04,139 INFO L93 Difference]: Finished difference Result 37293 states and 56895 transitions. [2023-12-20 02:32:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:04,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-12-20 02:32:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:04,181 INFO L225 Difference]: With dead ends: 37293 [2023-12-20 02:32:04,181 INFO L226 Difference]: Without dead ends: 24715 [2023-12-20 02:32:04,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:04,202 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 1730 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:04,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 3140 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24715 states. [2023-12-20 02:32:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24715 to 24713. [2023-12-20 02:32:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24713 states, 24712 states have (on average 1.5154985432178698) internal successors, (37451), 24712 states have internal predecessors, (37451), 0 states have call successors, (0), 0 states 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 02:32:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24713 states to 24713 states and 37451 transitions. [2023-12-20 02:32:04,634 INFO L78 Accepts]: Start accepts. Automaton has 24713 states and 37451 transitions. Word has length 239 [2023-12-20 02:32:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:04,635 INFO L495 AbstractCegarLoop]: Abstraction has 24713 states and 37451 transitions. [2023-12-20 02:32:04,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 02:32:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 24713 states and 37451 transitions. [2023-12-20 02:32:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-20 02:32:04,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:04,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:04,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:32:04,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:04,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1837975884, now seen corresponding path program 1 times [2023-12-20 02:32:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:04,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656914681] [2023-12-20 02:32:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:04,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:05,093 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 02:32:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656914681] [2023-12-20 02:32:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656914681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:05,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190559042] [2023-12-20 02:32:05,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:32:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:32:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:32:05,096 INFO L87 Difference]: Start difference. First operand 24713 states and 37451 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 02:32:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:05,323 INFO L93 Difference]: Finished difference Result 72779 states and 110136 transitions. [2023-12-20 02:32:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-12-20 02:32:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:05,397 INFO L225 Difference]: With dead ends: 72779 [2023-12-20 02:32:05,397 INFO L226 Difference]: Without dead ends: 48295 [2023-12-20 02:32:05,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:05,437 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1926 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:05,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 2276 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48295 states. [2023-12-20 02:32:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48295 to 48293. [2023-12-20 02:32:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48293 states, 48292 states have (on average 1.5033338855296943) internal successors, (72599), 48292 states have internal predecessors, (72599), 0 states have call successors, (0), 0 states 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 02:32:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48293 states to 48293 states and 72599 transitions. [2023-12-20 02:32:06,248 INFO L78 Accepts]: Start accepts. Automaton has 48293 states and 72599 transitions. Word has length 239 [2023-12-20 02:32:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:06,249 INFO L495 AbstractCegarLoop]: Abstraction has 48293 states and 72599 transitions. [2023-12-20 02:32:06,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 02:32:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 48293 states and 72599 transitions. [2023-12-20 02:32:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-20 02:32:06,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:06,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:06,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 02:32:06,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash -576841362, now seen corresponding path program 1 times [2023-12-20 02:32:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261373541] [2023-12-20 02:32:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:06,432 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 02:32:06,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:06,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261373541] [2023-12-20 02:32:06,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261373541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795982696] [2023-12-20 02:32:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:06,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:06,434 INFO L87 Difference]: Start difference. First operand 48293 states and 72599 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:32:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:07,036 INFO L93 Difference]: Finished difference Result 141593 states and 212367 transitions. [2023-12-20 02:32:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2023-12-20 02:32:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:07,197 INFO L225 Difference]: With dead ends: 141593 [2023-12-20 02:32:07,198 INFO L226 Difference]: Without dead ends: 94679 [2023-12-20 02:32:07,228 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 02:32:07,373 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 748 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:07,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 2557 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94679 states. [2023-12-20 02:32:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94679 to 94677. [2023-12-20 02:32:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94677 states, 94676 states have (on average 1.492131057501373) internal successors, (141269), 94676 states have internal predecessors, (141269), 0 states have call successors, (0), 0 states 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 02:32:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94677 states to 94677 states and 141269 transitions. [2023-12-20 02:32:09,210 INFO L78 Accepts]: Start accepts. Automaton has 94677 states and 141269 transitions. Word has length 241 [2023-12-20 02:32:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:09,211 INFO L495 AbstractCegarLoop]: Abstraction has 94677 states and 141269 transitions. [2023-12-20 02:32:09,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:32:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 94677 states and 141269 transitions. [2023-12-20 02:32:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-20 02:32:09,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:09,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:09,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:32:09,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:09,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1794184819, now seen corresponding path program 1 times [2023-12-20 02:32:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861319723] [2023-12-20 02:32:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:09,540 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 02:32:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861319723] [2023-12-20 02:32:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861319723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:09,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931303583] [2023-12-20 02:32:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:09,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:09,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:09,542 INFO L87 Difference]: Start difference. First operand 94677 states and 141269 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:32:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:10,357 INFO L93 Difference]: Finished difference Result 282909 states and 421985 transitions. [2023-12-20 02:32:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2023-12-20 02:32:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:10,821 INFO L225 Difference]: With dead ends: 282909 [2023-12-20 02:32:10,821 INFO L226 Difference]: Without dead ends: 188893 [2023-12-20 02:32:10,928 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 02:32:10,930 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 860 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:10,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2650 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188893 states. [2023-12-20 02:32:12,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188893 to 94887. [2023-12-20 02:32:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94887 states, 94886 states have (on average 1.4921168560166937) internal successors, (141581), 94886 states have internal predecessors, (141581), 0 states have call successors, (0), 0 states 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 02:32:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94887 states to 94887 states and 141581 transitions. [2023-12-20 02:32:13,449 INFO L78 Accepts]: Start accepts. Automaton has 94887 states and 141581 transitions. Word has length 241 [2023-12-20 02:32:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:13,449 INFO L495 AbstractCegarLoop]: Abstraction has 94887 states and 141581 transitions. [2023-12-20 02:32:13,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:32:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 94887 states and 141581 transitions. [2023-12-20 02:32:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-20 02:32:13,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:13,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:13,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:32:13,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:13,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:13,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2114913303, now seen corresponding path program 1 times [2023-12-20 02:32:13,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239354539] [2023-12-20 02:32:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:13,714 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 02:32:13,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:13,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239354539] [2023-12-20 02:32:13,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239354539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:13,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:13,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939228341] [2023-12-20 02:32:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:13,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:13,716 INFO L87 Difference]: Start difference. First operand 94887 states and 141581 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:32:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:14,662 INFO L93 Difference]: Finished difference Result 283097 states and 422191 transitions. [2023-12-20 02:32:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:14,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2023-12-20 02:32:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:14,953 INFO L225 Difference]: With dead ends: 283097 [2023-12-20 02:32:14,953 INFO L226 Difference]: Without dead ends: 189071 [2023-12-20 02:32:15,050 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 02:32:15,050 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 855 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2650 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189071 states. [2023-12-20 02:32:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189071 to 95117. [2023-12-20 02:32:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95117 states, 95116 states have (on average 1.4912843265065814) internal successors, (141845), 95116 states have internal predecessors, (141845), 0 states have call successors, (0), 0 states 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 02:32:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95117 states to 95117 states and 141845 transitions. [2023-12-20 02:32:17,459 INFO L78 Accepts]: Start accepts. Automaton has 95117 states and 141845 transitions. Word has length 242 [2023-12-20 02:32:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:17,459 INFO L495 AbstractCegarLoop]: Abstraction has 95117 states and 141845 transitions. [2023-12-20 02:32:17,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:32:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 95117 states and 141845 transitions. [2023-12-20 02:32:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-20 02:32:17,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:17,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:17,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:32:17,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:17,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:17,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1908725562, now seen corresponding path program 1 times [2023-12-20 02:32:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:17,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378084320] [2023-12-20 02:32:17,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:17,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:18,117 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 02:32:18,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:18,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378084320] [2023-12-20 02:32:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378084320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:18,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:32:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98984511] [2023-12-20 02:32:18,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:18,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:32:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:18,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:32:18,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:18,119 INFO L87 Difference]: Start difference. First operand 95117 states and 141845 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 02:32:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:19,050 INFO L93 Difference]: Finished difference Result 279196 states and 415670 transitions. [2023-12-20 02:32:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2023-12-20 02:32:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:19,286 INFO L225 Difference]: With dead ends: 279196 [2023-12-20 02:32:19,286 INFO L226 Difference]: Without dead ends: 184659 [2023-12-20 02:32:19,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:19,369 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 2463 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:19,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2463 Valid, 2194 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184659 states. [2023-12-20 02:32:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184659 to 184657. [2023-12-20 02:32:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184657 states, 184656 states have (on average 1.4776611645438003) internal successors, (272859), 184656 states have internal predecessors, (272859), 0 states have call successors, (0), 0 states 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 02:32:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184657 states to 184657 states and 272859 transitions. [2023-12-20 02:32:22,304 INFO L78 Accepts]: Start accepts. Automaton has 184657 states and 272859 transitions. Word has length 243 [2023-12-20 02:32:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:22,305 INFO L495 AbstractCegarLoop]: Abstraction has 184657 states and 272859 transitions. [2023-12-20 02:32:22,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 02:32:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 184657 states and 272859 transitions. [2023-12-20 02:32:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-20 02:32:22,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:22,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:22,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:32:22,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 891544760, now seen corresponding path program 1 times [2023-12-20 02:32:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496298832] [2023-12-20 02:32:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:23,038 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 02:32:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496298832] [2023-12-20 02:32:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496298832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782218034] [2023-12-20 02:32:23,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:23,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:32:23,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:23,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:32:23,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:32:23,040 INFO L87 Difference]: Start difference. First operand 184657 states and 272859 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 02:32:24,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:24,238 INFO L93 Difference]: Finished difference Result 388550 states and 573865 transitions. [2023-12-20 02:32:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:24,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2023-12-20 02:32:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:24,848 INFO L225 Difference]: With dead ends: 388550 [2023-12-20 02:32:24,848 INFO L226 Difference]: Without dead ends: 205510 [2023-12-20 02:32:24,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:24,935 INFO L413 NwaCegarLoop]: 1404 mSDtfsCounter, 1896 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:24,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 2257 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205510 states. [2023-12-20 02:32:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205510 to 184892. [2023-12-20 02:32:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184892 states, 184891 states have (on average 1.476789027048369) internal successors, (273045), 184891 states have internal predecessors, (273045), 0 states have call successors, (0), 0 states 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 02:32:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184892 states to 184892 states and 273045 transitions. [2023-12-20 02:32:27,638 INFO L78 Accepts]: Start accepts. Automaton has 184892 states and 273045 transitions. Word has length 245 [2023-12-20 02:32:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:27,639 INFO L495 AbstractCegarLoop]: Abstraction has 184892 states and 273045 transitions. [2023-12-20 02:32:27,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 02:32:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 184892 states and 273045 transitions. [2023-12-20 02:32:28,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-20 02:32:28,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:28,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:32:28,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:28,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:28,118 INFO L85 PathProgramCache]: Analyzing trace with hash -817116074, now seen corresponding path program 1 times [2023-12-20 02:32:28,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:28,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217301946] [2023-12-20 02:32:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:32:28,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:28,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217301946] [2023-12-20 02:32:28,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217301946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:28,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012054304] [2023-12-20 02:32:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:28,176 INFO L87 Difference]: Start difference. First operand 184892 states and 273045 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 02:32:29,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:29,817 INFO L93 Difference]: Finished difference Result 548334 states and 809158 transitions. [2023-12-20 02:32:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:29,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-12-20 02:32:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:30,322 INFO L225 Difference]: With dead ends: 548334 [2023-12-20 02:32:30,322 INFO L226 Difference]: Without dead ends: 365919 [2023-12-20 02:32:30,423 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 02:32:30,424 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 827 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:30,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2617 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365919 states. [2023-12-20 02:32:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365919 to 185365. [2023-12-20 02:32:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185365 states, 185364 states have (on average 1.4761550247081419) internal successors, (273626), 185364 states have internal predecessors, (273626), 0 states have call successors, (0), 0 states 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 02:32:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185365 states to 185365 states and 273626 transitions. [2023-12-20 02:32:35,307 INFO L78 Accepts]: Start accepts. Automaton has 185365 states and 273626 transitions. Word has length 247 [2023-12-20 02:32:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:35,307 INFO L495 AbstractCegarLoop]: Abstraction has 185365 states and 273626 transitions. [2023-12-20 02:32:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 02:32:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 185365 states and 273626 transitions. [2023-12-20 02:32:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-20 02:32:35,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:35,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:32:35,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:35,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash 176518350, now seen corresponding path program 1 times [2023-12-20 02:32:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747570901] [2023-12-20 02:32:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:35,595 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 02:32:35,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747570901] [2023-12-20 02:32:35,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747570901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:35,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:35,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917994646] [2023-12-20 02:32:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:35,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:35,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:35,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:35,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:35,598 INFO L87 Difference]: Start difference. First operand 185365 states and 273626 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 02:32:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:37,498 INFO L93 Difference]: Finished difference Result 550753 states and 812717 transitions. [2023-12-20 02:32:37,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 248 [2023-12-20 02:32:37,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:38,145 INFO L225 Difference]: With dead ends: 550753 [2023-12-20 02:32:38,146 INFO L226 Difference]: Without dead ends: 367976 [2023-12-20 02:32:38,298 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 02:32:38,298 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 822 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:38,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 2617 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:32:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367976 states. [2023-12-20 02:32:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367976 to 186050. [2023-12-20 02:32:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186050 states, 186049 states have (on average 1.4750415213196524) internal successors, (274430), 186049 states have internal predecessors, (274430), 0 states have call successors, (0), 0 states 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 02:32:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186050 states to 186050 states and 274430 transitions. [2023-12-20 02:32:43,134 INFO L78 Accepts]: Start accepts. Automaton has 186050 states and 274430 transitions. Word has length 248 [2023-12-20 02:32:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:43,135 INFO L495 AbstractCegarLoop]: Abstraction has 186050 states and 274430 transitions. [2023-12-20 02:32:43,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 02:32:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 186050 states and 274430 transitions. [2023-12-20 02:32:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 02:32:43,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:43,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:43,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:32:43,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:43,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:43,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1436284236, now seen corresponding path program 1 times [2023-12-20 02:32:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873037434] [2023-12-20 02:32:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:43,370 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 02:32:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873037434] [2023-12-20 02:32:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873037434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:43,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:43,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:32:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724259185] [2023-12-20 02:32:43,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:32:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:43,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:32:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:43,372 INFO L87 Difference]: Start difference. First operand 186050 states and 274430 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 02:32:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:45,274 INFO L93 Difference]: Finished difference Result 533703 states and 786037 transitions. [2023-12-20 02:32:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:32:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2023-12-20 02:32:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:45,884 INFO L225 Difference]: With dead ends: 533703 [2023-12-20 02:32:45,885 INFO L226 Difference]: Without dead ends: 350087 [2023-12-20 02:32:46,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:32:46,076 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 747 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:46,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 2592 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350087 states. [2023-12-20 02:32:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350087 to 350085. [2023-12-20 02:32:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350085 states, 350084 states have (on average 1.4619405628363478) internal successors, (511802), 350084 states have internal predecessors, (511802), 0 states have call successors, (0), 0 states 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 02:32:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350085 states to 350085 states and 511802 transitions. [2023-12-20 02:32:52,332 INFO L78 Accepts]: Start accepts. Automaton has 350085 states and 511802 transitions. Word has length 249 [2023-12-20 02:32:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:32:52,333 INFO L495 AbstractCegarLoop]: Abstraction has 350085 states and 511802 transitions. [2023-12-20 02:32:52,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 02:32:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 350085 states and 511802 transitions. [2023-12-20 02:32:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 02:32:53,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:32:53,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:32:53,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 02:32:53,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:32:53,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:32:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1227828375, now seen corresponding path program 1 times [2023-12-20 02:32:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:32:53,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379804535] [2023-12-20 02:32:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:32:53,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:32:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:32:53,254 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 02:32:53,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:32:53,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379804535] [2023-12-20 02:32:53,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379804535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:32:53,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:32:53,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:32:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363840766] [2023-12-20 02:32:53,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:32:53,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:32:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:32:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:32:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:53,255 INFO L87 Difference]: Start difference. First operand 350085 states and 511802 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 02:32:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:32:55,676 INFO L93 Difference]: Finished difference Result 735385 states and 1074616 transitions. [2023-12-20 02:32:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:32:55,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2023-12-20 02:32:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:32:56,360 INFO L225 Difference]: With dead ends: 735385 [2023-12-20 02:32:56,360 INFO L226 Difference]: Without dead ends: 389699 [2023-12-20 02:32:56,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:32:56,536 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 2018 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:32:56,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2018 Valid, 3135 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:32:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389699 states. [2023-12-20 02:33:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389699 to 349625. [2023-12-20 02:33:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349625 states, 349624 states have (on average 1.4612555202160036) internal successors, (510890), 349624 states have internal predecessors, (510890), 0 states have call successors, (0), 0 states 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 02:33:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349625 states to 349625 states and 510890 transitions. [2023-12-20 02:33:02,487 INFO L78 Accepts]: Start accepts. Automaton has 349625 states and 510890 transitions. Word has length 249 [2023-12-20 02:33:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:33:02,488 INFO L495 AbstractCegarLoop]: Abstraction has 349625 states and 510890 transitions. [2023-12-20 02:33:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 02:33:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 349625 states and 510890 transitions. [2023-12-20 02:33:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-20 02:33:03,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:33:03,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:03,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 02:33:03,183 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:33:03,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:33:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1985669831, now seen corresponding path program 1 times [2023-12-20 02:33:03,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:33:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471620021] [2023-12-20 02:33:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:33:03,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:33:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:33:03,436 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 02:33:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:33:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471620021] [2023-12-20 02:33:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471620021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:33:03,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:33:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:33:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787070595] [2023-12-20 02:33:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:33:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:33:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:33:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:33:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:33:03,439 INFO L87 Difference]: Start difference. First operand 349625 states and 510890 transitions. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 02:33:07,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:33:07,161 INFO L93 Difference]: Finished difference Result 1024303 states and 1494842 transitions. [2023-12-20 02:33:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:33:07,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2023-12-20 02:33:07,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:33:08,381 INFO L225 Difference]: With dead ends: 1024303 [2023-12-20 02:33:08,382 INFO L226 Difference]: Without dead ends: 679173 [2023-12-20 02:33:08,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:33:08,564 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 2427 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:33:08,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2427 Valid, 2270 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:33:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679173 states. [2023-12-20 02:33:20,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679173 to 679171. [2023-12-20 02:33:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679171 states, 679170 states have (on average 1.4481087209387928) internal successors, (983512), 679170 states have internal predecessors, (983512), 0 states have call successors, (0), 0 states 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 02:33:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679171 states to 679171 states and 983512 transitions. [2023-12-20 02:33:23,135 INFO L78 Accepts]: Start accepts. Automaton has 679171 states and 983512 transitions. Word has length 251 [2023-12-20 02:33:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:33:23,135 INFO L495 AbstractCegarLoop]: Abstraction has 679171 states and 983512 transitions. [2023-12-20 02:33:23,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 02:33:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 679171 states and 983512 transitions. [2023-12-20 02:33:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-20 02:33:24,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:33:24,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:24,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 02:33:24,142 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:33:24,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:33:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash -676131639, now seen corresponding path program 1 times [2023-12-20 02:33:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:33:24,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672323944] [2023-12-20 02:33:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:33:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:33:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:33:24,769 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 02:33:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:33:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672323944] [2023-12-20 02:33:24,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672323944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:33:24,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:33:24,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:33:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395209809] [2023-12-20 02:33:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:33:24,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:33:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:33:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:33:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:33:24,772 INFO L87 Difference]: Start difference. First operand 679171 states and 983512 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states 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 02:33:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:33:29,397 INFO L93 Difference]: Finished difference Result 1427178 states and 2064753 transitions. [2023-12-20 02:33:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:33:29,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 251 [2023-12-20 02:33:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:33:30,999 INFO L225 Difference]: With dead ends: 1427178 [2023-12-20 02:33:31,000 INFO L226 Difference]: Without dead ends: 760356 [2023-12-20 02:33:31,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:33:31,314 INFO L413 NwaCegarLoop]: 1420 mSDtfsCounter, 1885 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:33:31,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 2273 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:33:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760356 states.