/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/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:55:24,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:55:24,979 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 00:55:24,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:55:24,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:55:24,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:55:24,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:55:24,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:55:24,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:55:24,998 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:55:24,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:55:24,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:55:24,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:55:24,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:55:24,999 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:55:24,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:55:25,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:55:25,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:55:25,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:55:25,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:55:25,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:55:25,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:55:25,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:55:25,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:55:25,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:55:25,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:55:25,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:55:25,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:55:25,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:55:25,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:55:25,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:55:25,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:55:25,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:55:25,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:55:25,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:55:25,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:55:25,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:55:25,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:55:25,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:55:25,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:55:25,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:55:25,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:55:25,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:55:25,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:55:25,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:55:25,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:55:25,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:55:25,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:55:25,204 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:55:25,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 00:55:26,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:55:26,380 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:55:26,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 00:55:26,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9899d7380/29c3eb9bbe7844959e6cc954c885c543/FLAG670a9e32d [2023-12-20 00:55:26,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9899d7380/29c3eb9bbe7844959e6cc954c885c543 [2023-12-20 00:55:26,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:55:26,409 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:55:26,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:55:26,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:55:26,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:55:26,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc49128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26, skipping insertion in model container [2023-12-20 00:55:26,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:55:26,637 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/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2023-12-20 00:55:26,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:55:26,648 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:55:26,719 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/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c[28194,28207] [2023-12-20 00:55:26,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:55:26,735 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:55:26,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26 WrapperNode [2023-12-20 00:55:26,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:55:26,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:55:26,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:55:26,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:55:26,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,787 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 942 [2023-12-20 00:55:26,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:55:26,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:55:26,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:55:26,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:55:26,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,840 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 00:55:26,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:55:26,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:55:26,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:55:26,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:55:26,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (1/1) ... [2023-12-20 00:55:26,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:55:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:55:26,944 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 00:55:26,965 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 00:55:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:55:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:55:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:55:26,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:55:27,098 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:55:27,100 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:55:27,676 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:55:27,710 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:55:27,710 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 00:55:27,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:55:27 BoogieIcfgContainer [2023-12-20 00:55:27,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:55:27,712 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:55:27,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:55:27,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:55:27,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:55:26" (1/3) ... [2023-12-20 00:55:27,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d0c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:55:27, skipping insertion in model container [2023-12-20 00:55:27,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:55:26" (2/3) ... [2023-12-20 00:55:27,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d0c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:55:27, skipping insertion in model container [2023-12-20 00:55:27,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:55:27" (3/3) ... [2023-12-20 00:55:27,716 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 00:55:27,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:55:27,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:55:27,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:55:27,776 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;@739fe7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:55:27,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:55:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 275 states, 273 states have (on average 1.84981684981685) internal successors, (505), 274 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 00:55:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 00:55:27,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:27,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:27,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:27,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1890370261, now seen corresponding path program 1 times [2023-12-20 00:55:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83986120] [2023-12-20 00:55:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:27,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:28,075 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 00:55:28,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83986120] [2023-12-20 00:55:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83986120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:28,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:28,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 00:55:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721868267] [2023-12-20 00:55:28,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:28,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 00:55:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 00:55:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:55:28,103 INFO L87 Difference]: Start difference. First operand has 275 states, 273 states have (on average 1.84981684981685) internal successors, (505), 274 states have internal predecessors, (505), 0 states have call successors, (0), 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 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:28,148 INFO L93 Difference]: Finished difference Result 361 states and 658 transitions. [2023-12-20 00:55:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 00:55:28,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 00:55:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:28,161 INFO L225 Difference]: With dead ends: 361 [2023-12-20 00:55:28,161 INFO L226 Difference]: Without dead ends: 273 [2023-12-20 00:55:28,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:55:28,166 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:28,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-20 00:55:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-20 00:55:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.838235294117647) internal successors, (500), 272 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 00:55:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 500 transitions. [2023-12-20 00:55:28,204 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 500 transitions. Word has length 74 [2023-12-20 00:55:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 500 transitions. [2023-12-20 00:55:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 500 transitions. [2023-12-20 00:55:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 00:55:28,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:28,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:28,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:55:28,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:28,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash 599158701, now seen corresponding path program 1 times [2023-12-20 00:55:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936098446] [2023-12-20 00:55:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:28,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936098446] [2023-12-20 00:55:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936098446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:28,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:28,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:28,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939995315] [2023-12-20 00:55:28,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:28,555 INFO L87 Difference]: Start difference. First operand 273 states and 500 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:28,643 INFO L93 Difference]: Finished difference Result 359 states and 651 transitions. [2023-12-20 00:55:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 00:55:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:28,650 INFO L225 Difference]: With dead ends: 359 [2023-12-20 00:55:28,650 INFO L226 Difference]: Without dead ends: 273 [2023-12-20 00:55:28,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:28,652 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:28,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1446 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:55:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-20 00:55:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-20 00:55:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.6838235294117647) internal successors, (458), 272 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 00:55:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 458 transitions. [2023-12-20 00:55:28,667 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 458 transitions. Word has length 74 [2023-12-20 00:55:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:28,672 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 458 transitions. [2023-12-20 00:55:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 458 transitions. [2023-12-20 00:55:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 00:55:28,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:28,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:55:28,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1162766459, now seen corresponding path program 1 times [2023-12-20 00:55:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389760271] [2023-12-20 00:55:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389760271] [2023-12-20 00:55:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389760271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119755688] [2023-12-20 00:55:28,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:28,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:28,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:28,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:28,832 INFO L87 Difference]: Start difference. First operand 273 states and 458 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 00:55:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:28,861 INFO L93 Difference]: Finished difference Result 428 states and 733 transitions. [2023-12-20 00:55:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:28,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2023-12-20 00:55:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:28,864 INFO L225 Difference]: With dead ends: 428 [2023-12-20 00:55:28,864 INFO L226 Difference]: Without dead ends: 345 [2023-12-20 00:55:28,868 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 00:55:28,870 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 119 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:28,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 967 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-12-20 00:55:28,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2023-12-20 00:55:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.6929824561403508) internal successors, (579), 342 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 00:55:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 579 transitions. [2023-12-20 00:55:28,891 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 579 transitions. Word has length 115 [2023-12-20 00:55:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:28,891 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 579 transitions. [2023-12-20 00:55:28,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 00:55:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 579 transitions. [2023-12-20 00:55:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 00:55:28,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:28,893 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] [2023-12-20 00:55:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:55:28,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1368270817, now seen corresponding path program 1 times [2023-12-20 00:55:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222146881] [2023-12-20 00:55:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:28,962 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 00:55:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222146881] [2023-12-20 00:55:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222146881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:28,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:28,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29587213] [2023-12-20 00:55:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:28,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:28,965 INFO L87 Difference]: Start difference. First operand 343 states and 579 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 00:55:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:28,983 INFO L93 Difference]: Finished difference Result 497 states and 852 transitions. [2023-12-20 00:55:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:28,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-20 00:55:28,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:28,987 INFO L225 Difference]: With dead ends: 497 [2023-12-20 00:55:28,987 INFO L226 Difference]: Without dead ends: 414 [2023-12-20 00:55:28,987 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 00:55:28,991 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 128 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:28,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1001 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:28,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-20 00:55:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2023-12-20 00:55:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.705596107055961) internal successors, (701), 411 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 00:55:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 701 transitions. [2023-12-20 00:55:29,001 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 701 transitions. Word has length 118 [2023-12-20 00:55:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,001 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 701 transitions. [2023-12-20 00:55:29,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 00:55:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 701 transitions. [2023-12-20 00:55:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-20 00:55:29,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,003 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] [2023-12-20 00:55:29,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:55:29,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2027226664, now seen corresponding path program 1 times [2023-12-20 00:55:29,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785571993] [2023-12-20 00:55:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,087 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 00:55:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785571993] [2023-12-20 00:55:29,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785571993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683031723] [2023-12-20 00:55:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,089 INFO L87 Difference]: Start difference. First operand 412 states and 701 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 00:55:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,125 INFO L93 Difference]: Finished difference Result 825 states and 1428 transitions. [2023-12-20 00:55:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-20 00:55:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,128 INFO L225 Difference]: With dead ends: 825 [2023-12-20 00:55:29,128 INFO L226 Difference]: Without dead ends: 605 [2023-12-20 00:55:29,129 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 00:55:29,129 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 120 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 978 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-20 00:55:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 603. [2023-12-20 00:55:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 602 states have (on average 1.7192691029900333) internal successors, (1035), 602 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 00:55:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1035 transitions. [2023-12-20 00:55:29,146 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1035 transitions. Word has length 118 [2023-12-20 00:55:29,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,146 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 1035 transitions. [2023-12-20 00:55:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 00:55:29,146 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1035 transitions. [2023-12-20 00:55:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:55:29,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,149 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] [2023-12-20 00:55:29,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:55:29,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1291342842, now seen corresponding path program 1 times [2023-12-20 00:55:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513220443] [2023-12-20 00:55:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,222 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 00:55:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513220443] [2023-12-20 00:55:29,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513220443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693608795] [2023-12-20 00:55:29,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,224 INFO L87 Difference]: Start difference. First operand 603 states and 1035 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:55:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,247 INFO L93 Difference]: Finished difference Result 1008 states and 1746 transitions. [2023-12-20 00:55:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-20 00:55:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,251 INFO L225 Difference]: With dead ends: 1008 [2023-12-20 00:55:29,251 INFO L226 Difference]: Without dead ends: 788 [2023-12-20 00:55:29,251 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 00:55:29,252 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 121 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 991 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-20 00:55:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 786. [2023-12-20 00:55:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.7222929936305733) internal successors, (1352), 785 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states 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 00:55:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1352 transitions. [2023-12-20 00:55:29,273 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1352 transitions. Word has length 121 [2023-12-20 00:55:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,274 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1352 transitions. [2023-12-20 00:55:29,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:55:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1352 transitions. [2023-12-20 00:55:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-20 00:55:29,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,275 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] [2023-12-20 00:55:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:55:29,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,275 INFO L85 PathProgramCache]: Analyzing trace with hash -645813627, now seen corresponding path program 1 times [2023-12-20 00:55:29,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285249764] [2023-12-20 00:55:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,394 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 00:55:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285249764] [2023-12-20 00:55:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285249764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480164301] [2023-12-20 00:55:29,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,396 INFO L87 Difference]: Start difference. First operand 786 states and 1352 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:55:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,430 INFO L93 Difference]: Finished difference Result 1879 states and 3259 transitions. [2023-12-20 00:55:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-20 00:55:29,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,434 INFO L225 Difference]: With dead ends: 1879 [2023-12-20 00:55:29,434 INFO L226 Difference]: Without dead ends: 1292 [2023-12-20 00:55:29,435 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 00:55:29,436 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 113 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 969 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-20 00:55:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1290. [2023-12-20 00:55:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.7214895267649342) internal successors, (2219), 1289 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states 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 00:55:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2219 transitions. [2023-12-20 00:55:29,460 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2219 transitions. Word has length 121 [2023-12-20 00:55:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,461 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 2219 transitions. [2023-12-20 00:55:29,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 00:55:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2219 transitions. [2023-12-20 00:55:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-20 00:55:29,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,462 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] [2023-12-20 00:55:29,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:55:29,462 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1710397733, now seen corresponding path program 1 times [2023-12-20 00:55:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142094426] [2023-12-20 00:55:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142094426] [2023-12-20 00:55:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142094426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337811453] [2023-12-20 00:55:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,532 INFO L87 Difference]: Start difference. First operand 1290 states and 2219 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 00:55:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,567 INFO L93 Difference]: Finished difference Result 2345 states and 4056 transitions. [2023-12-20 00:55:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-20 00:55:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,573 INFO L225 Difference]: With dead ends: 2345 [2023-12-20 00:55:29,573 INFO L226 Difference]: Without dead ends: 1758 [2023-12-20 00:55:29,574 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 00:55:29,575 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 114 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 981 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-12-20 00:55:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1756. [2023-12-20 00:55:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 1.7179487179487178) internal successors, (3015), 1755 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states 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 00:55:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 3015 transitions. [2023-12-20 00:55:29,604 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 3015 transitions. Word has length 124 [2023-12-20 00:55:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,604 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 3015 transitions. [2023-12-20 00:55:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 00:55:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 3015 transitions. [2023-12-20 00:55:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-20 00:55:29,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,605 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] [2023-12-20 00:55:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:55:29,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2059424284, now seen corresponding path program 1 times [2023-12-20 00:55:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681981121] [2023-12-20 00:55:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,684 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 00:55:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681981121] [2023-12-20 00:55:29,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681981121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984598527] [2023-12-20 00:55:29,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,686 INFO L87 Difference]: Start difference. First operand 1756 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 00:55:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,722 INFO L93 Difference]: Finished difference Result 4613 states and 7922 transitions. [2023-12-20 00:55:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-20 00:55:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,731 INFO L225 Difference]: With dead ends: 4613 [2023-12-20 00:55:29,732 INFO L226 Difference]: Without dead ends: 3063 [2023-12-20 00:55:29,736 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 00:55:29,737 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 106 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 960 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2023-12-20 00:55:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 3061. [2023-12-20 00:55:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3061 states, 3060 states have (on average 1.7029411764705882) internal successors, (5211), 3060 states have internal predecessors, (5211), 0 states have call successors, (0), 0 states 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 00:55:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 5211 transitions. [2023-12-20 00:55:29,803 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 5211 transitions. Word has length 124 [2023-12-20 00:55:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:29,804 INFO L495 AbstractCegarLoop]: Abstraction has 3061 states and 5211 transitions. [2023-12-20 00:55:29,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 00:55:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 5211 transitions. [2023-12-20 00:55:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 00:55:29,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:29,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:55:29,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:29,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash -982220166, now seen corresponding path program 1 times [2023-12-20 00:55:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:29,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030069155] [2023-12-20 00:55:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:29,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030069155] [2023-12-20 00:55:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030069155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:29,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272188875] [2023-12-20 00:55:29,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:29,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,896 INFO L87 Difference]: Start difference. First operand 3061 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 00:55:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:29,938 INFO L93 Difference]: Finished difference Result 5790 states and 9886 transitions. [2023-12-20 00:55:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-20 00:55:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:29,950 INFO L225 Difference]: With dead ends: 5790 [2023-12-20 00:55:29,950 INFO L226 Difference]: Without dead ends: 4240 [2023-12-20 00:55:29,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:29,955 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 107 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:29,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 971 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2023-12-20 00:55:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 4238. [2023-12-20 00:55:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 4237 states have (on average 1.6931791361812603) internal successors, (7174), 4237 states have internal predecessors, (7174), 0 states have call successors, (0), 0 states 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 00:55:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 7174 transitions. [2023-12-20 00:55:30,032 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 7174 transitions. Word has length 127 [2023-12-20 00:55:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:30,032 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 7174 transitions. [2023-12-20 00:55:30,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 00:55:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 7174 transitions. [2023-12-20 00:55:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-20 00:55:30,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:30,033 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] [2023-12-20 00:55:30,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:55:30,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:30,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:30,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1464193915, now seen corresponding path program 1 times [2023-12-20 00:55:30,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:30,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151555468] [2023-12-20 00:55:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:30,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:30,159 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 00:55:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151555468] [2023-12-20 00:55:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151555468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:55:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572185662] [2023-12-20 00:55:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:55:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:55:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:55:30,161 INFO L87 Difference]: Start difference. First operand 4238 states and 7174 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 00:55:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:30,577 INFO L93 Difference]: Finished difference Result 27159 states and 46476 transitions. [2023-12-20 00:55:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:55:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-20 00:55:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:30,638 INFO L225 Difference]: With dead ends: 27159 [2023-12-20 00:55:30,638 INFO L226 Difference]: Without dead ends: 23134 [2023-12-20 00:55:30,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:55:30,652 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1640 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:30,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 2744 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:55:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23134 states. [2023-12-20 00:55:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23134 to 8114. [2023-12-20 00:55:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8114 states, 8113 states have (on average 1.6853198570195982) internal successors, (13673), 8113 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states 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 00:55:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8114 states to 8114 states and 13673 transitions. [2023-12-20 00:55:30,923 INFO L78 Accepts]: Start accepts. Automaton has 8114 states and 13673 transitions. Word has length 127 [2023-12-20 00:55:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:30,923 INFO L495 AbstractCegarLoop]: Abstraction has 8114 states and 13673 transitions. [2023-12-20 00:55:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 00:55:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8114 states and 13673 transitions. [2023-12-20 00:55:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-20 00:55:30,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:30,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:30,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:55:30,925 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:30,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1786425182, now seen corresponding path program 1 times [2023-12-20 00:55:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:30,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278778597] [2023-12-20 00:55:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:31,059 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 00:55:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278778597] [2023-12-20 00:55:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278778597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:31,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855770091] [2023-12-20 00:55:31,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:31,061 INFO L87 Difference]: Start difference. First operand 8114 states and 13673 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 00:55:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:31,282 INFO L93 Difference]: Finished difference Result 26847 states and 45588 transitions. [2023-12-20 00:55:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-20 00:55:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:31,316 INFO L225 Difference]: With dead ends: 26847 [2023-12-20 00:55:31,316 INFO L226 Difference]: Without dead ends: 18946 [2023-12-20 00:55:31,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:55:31,331 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 419 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:31,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1338 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18946 states. [2023-12-20 00:55:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18946 to 13475. [2023-12-20 00:55:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13475 states, 13474 states have (on average 1.684651922220573) internal successors, (22699), 13474 states have internal predecessors, (22699), 0 states have call successors, (0), 0 states 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 00:55:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13475 states to 13475 states and 22699 transitions. [2023-12-20 00:55:31,672 INFO L78 Accepts]: Start accepts. Automaton has 13475 states and 22699 transitions. Word has length 128 [2023-12-20 00:55:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:31,672 INFO L495 AbstractCegarLoop]: Abstraction has 13475 states and 22699 transitions. [2023-12-20 00:55:31,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 00:55:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states and 22699 transitions. [2023-12-20 00:55:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 00:55:31,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:31,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:31,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:55:31,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:31,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:31,674 INFO L85 PathProgramCache]: Analyzing trace with hash -518146162, now seen corresponding path program 1 times [2023-12-20 00:55:31,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:31,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036462578] [2023-12-20 00:55:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:31,765 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 00:55:31,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036462578] [2023-12-20 00:55:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036462578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:31,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261865480] [2023-12-20 00:55:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:31,767 INFO L87 Difference]: Start difference. First operand 13475 states and 22699 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:32,207 INFO L93 Difference]: Finished difference Result 44285 states and 74776 transitions. [2023-12-20 00:55:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-20 00:55:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:32,267 INFO L225 Difference]: With dead ends: 44285 [2023-12-20 00:55:32,267 INFO L226 Difference]: Without dead ends: 31023 [2023-12-20 00:55:32,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:55:32,288 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 417 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:32,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1441 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31023 states. [2023-12-20 00:55:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31023 to 22160. [2023-12-20 00:55:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22160 states, 22159 states have (on average 1.6753012320050544) internal successors, (37123), 22159 states have internal predecessors, (37123), 0 states have call successors, (0), 0 states 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 00:55:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22160 states to 22160 states and 37123 transitions. [2023-12-20 00:55:32,836 INFO L78 Accepts]: Start accepts. Automaton has 22160 states and 37123 transitions. Word has length 129 [2023-12-20 00:55:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:32,836 INFO L495 AbstractCegarLoop]: Abstraction has 22160 states and 37123 transitions. [2023-12-20 00:55:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 22160 states and 37123 transitions. [2023-12-20 00:55:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:55:32,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:32,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:55:32,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:32,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1060037959, now seen corresponding path program 1 times [2023-12-20 00:55:32,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:32,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292608437] [2023-12-20 00:55:32,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:32,928 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 00:55:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292608437] [2023-12-20 00:55:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292608437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:32,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:32,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:32,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557997334] [2023-12-20 00:55:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:32,930 INFO L87 Difference]: Start difference. First operand 22160 states and 37123 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:33,609 INFO L93 Difference]: Finished difference Result 72619 states and 121924 transitions. [2023-12-20 00:55:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:33,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-20 00:55:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:33,713 INFO L225 Difference]: With dead ends: 72619 [2023-12-20 00:55:33,714 INFO L226 Difference]: Without dead ends: 50672 [2023-12-20 00:55:33,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:55:33,739 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 415 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:33,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1443 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50672 states. [2023-12-20 00:55:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50672 to 36273. [2023-12-20 00:55:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36273 states, 36272 states have (on average 1.6659406704896338) internal successors, (60427), 36272 states have internal predecessors, (60427), 0 states have call successors, (0), 0 states 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 00:55:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36273 states to 36273 states and 60427 transitions. [2023-12-20 00:55:34,539 INFO L78 Accepts]: Start accepts. Automaton has 36273 states and 60427 transitions. Word has length 130 [2023-12-20 00:55:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:34,539 INFO L495 AbstractCegarLoop]: Abstraction has 36273 states and 60427 transitions. [2023-12-20 00:55:34,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 36273 states and 60427 transitions. [2023-12-20 00:55:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 00:55:34,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:34,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:34,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:55:34,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:34,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:34,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1550410089, now seen corresponding path program 1 times [2023-12-20 00:55:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537378965] [2023-12-20 00:55:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:34,626 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 00:55:34,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:34,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537378965] [2023-12-20 00:55:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537378965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:34,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:34,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790415295] [2023-12-20 00:55:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:34,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:34,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:34,628 INFO L87 Difference]: Start difference. First operand 36273 states and 60427 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:35,601 INFO L93 Difference]: Finished difference Result 117553 states and 196264 transitions. [2023-12-20 00:55:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-20 00:55:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:35,878 INFO L225 Difference]: With dead ends: 117553 [2023-12-20 00:55:35,878 INFO L226 Difference]: Without dead ends: 81493 [2023-12-20 00:55:35,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:55:35,915 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 413 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:35,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1451 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81493 states. [2023-12-20 00:55:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81493 to 58658. [2023-12-20 00:55:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58658 states, 58657 states have (on average 1.656869597831461) internal successors, (97187), 58657 states have internal predecessors, (97187), 0 states have call successors, (0), 0 states 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 00:55:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58658 states to 58658 states and 97187 transitions. [2023-12-20 00:55:37,191 INFO L78 Accepts]: Start accepts. Automaton has 58658 states and 97187 transitions. Word has length 131 [2023-12-20 00:55:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:37,192 INFO L495 AbstractCegarLoop]: Abstraction has 58658 states and 97187 transitions. [2023-12-20 00:55:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 58658 states and 97187 transitions. [2023-12-20 00:55:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 00:55:37,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:37,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:37,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:55:37,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:37,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1067749953, now seen corresponding path program 1 times [2023-12-20 00:55:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442279446] [2023-12-20 00:55:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:37,555 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 00:55:37,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:37,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442279446] [2023-12-20 00:55:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442279446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:37,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:55:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931298620] [2023-12-20 00:55:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:55:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:55:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:55:37,557 INFO L87 Difference]: Start difference. First operand 58658 states and 97187 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:38,345 INFO L93 Difference]: Finished difference Result 117105 states and 194033 transitions. [2023-12-20 00:55:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:55:38,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-20 00:55:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:38,443 INFO L225 Difference]: With dead ends: 117105 [2023-12-20 00:55:38,444 INFO L226 Difference]: Without dead ends: 58660 [2023-12-20 00:55:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:55:38,473 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 427 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1717 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58660 states. [2023-12-20 00:55:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58660 to 58658. [2023-12-20 00:55:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58658 states, 58657 states have (on average 1.6462144330599928) internal successors, (96562), 58657 states have internal predecessors, (96562), 0 states have call successors, (0), 0 states 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 00:55:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58658 states to 58658 states and 96562 transitions. [2023-12-20 00:55:39,547 INFO L78 Accepts]: Start accepts. Automaton has 58658 states and 96562 transitions. Word has length 133 [2023-12-20 00:55:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:39,548 INFO L495 AbstractCegarLoop]: Abstraction has 58658 states and 96562 transitions. [2023-12-20 00:55:39,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 58658 states and 96562 transitions. [2023-12-20 00:55:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 00:55:39,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:39,553 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] [2023-12-20 00:55:39,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:55:39,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1987540452, now seen corresponding path program 1 times [2023-12-20 00:55:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779878599] [2023-12-20 00:55:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:39,761 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 00:55:39,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:39,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779878599] [2023-12-20 00:55:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779878599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:39,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:55:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931855441] [2023-12-20 00:55:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:39,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:55:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:55:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:55:39,763 INFO L87 Difference]: Start difference. First operand 58658 states and 96562 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 00:55:41,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:41,091 INFO L93 Difference]: Finished difference Result 171535 states and 282829 transitions. [2023-12-20 00:55:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:55:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-20 00:55:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:41,288 INFO L225 Difference]: With dead ends: 171535 [2023-12-20 00:55:41,288 INFO L226 Difference]: Without dead ends: 113090 [2023-12-20 00:55:41,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:55:41,341 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 107 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:41,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2159 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113090 states. [2023-12-20 00:55:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113090 to 113088. [2023-12-20 00:55:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113088 states, 113087 states have (on average 1.6322919522137822) internal successors, (184591), 113087 states have internal predecessors, (184591), 0 states have call successors, (0), 0 states 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 00:55:43,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113088 states to 113088 states and 184591 transitions. [2023-12-20 00:55:43,562 INFO L78 Accepts]: Start accepts. Automaton has 113088 states and 184591 transitions. Word has length 136 [2023-12-20 00:55:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:43,563 INFO L495 AbstractCegarLoop]: Abstraction has 113088 states and 184591 transitions. [2023-12-20 00:55:43,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 00:55:43,563 INFO L276 IsEmpty]: Start isEmpty. Operand 113088 states and 184591 transitions. [2023-12-20 00:55:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 00:55:43,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:43,564 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] [2023-12-20 00:55:43,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:55:43,564 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:43,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1469661750, now seen corresponding path program 1 times [2023-12-20 00:55:43,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:43,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482332835] [2023-12-20 00:55:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:43,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:43,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482332835] [2023-12-20 00:55:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482332835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:43,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:43,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:55:43,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949369532] [2023-12-20 00:55:43,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:55:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:55:43,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:43,949 INFO L87 Difference]: Start difference. First operand 113088 states and 184591 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 00:55:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:44,918 INFO L93 Difference]: Finished difference Result 118898 states and 192336 transitions. [2023-12-20 00:55:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:55:44,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-20 00:55:44,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:45,086 INFO L225 Difference]: With dead ends: 118898 [2023-12-20 00:55:45,086 INFO L226 Difference]: Without dead ends: 118896 [2023-12-20 00:55:45,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:55:45,107 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:45,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1348 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:45,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118896 states. [2023-12-20 00:55:46,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118896 to 116960. [2023-12-20 00:55:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116960 states, 116959 states have (on average 1.6111286861207774) internal successors, (188436), 116959 states have internal predecessors, (188436), 0 states have call successors, (0), 0 states 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 00:55:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116960 states to 116960 states and 188436 transitions. [2023-12-20 00:55:47,300 INFO L78 Accepts]: Start accepts. Automaton has 116960 states and 188436 transitions. Word has length 137 [2023-12-20 00:55:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:47,300 INFO L495 AbstractCegarLoop]: Abstraction has 116960 states and 188436 transitions. [2023-12-20 00:55:47,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 00:55:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 116960 states and 188436 transitions. [2023-12-20 00:55:47,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 00:55:47,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:47,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:55:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 00:55:47,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1115574285, now seen corresponding path program 1 times [2023-12-20 00:55:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368431475] [2023-12-20 00:55:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:55:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368431475] [2023-12-20 00:55:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368431475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:47,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471925846] [2023-12-20 00:55:47,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:47,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:47,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:47,553 INFO L87 Difference]: Start difference. First operand 116960 states and 188436 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:49,775 INFO L93 Difference]: Finished difference Result 349877 states and 563316 transitions. [2023-12-20 00:55:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:49,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-20 00:55:49,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:50,159 INFO L225 Difference]: With dead ends: 349877 [2023-12-20 00:55:50,160 INFO L226 Difference]: Without dead ends: 232977 [2023-12-20 00:55:50,215 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 00:55:50,216 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 377 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:50,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1200 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:55:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232977 states. [2023-12-20 00:55:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232977 to 232975. [2023-12-20 00:55:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232975 states, 232974 states have (on average 1.5998695133362522) internal successors, (372728), 232974 states have internal predecessors, (372728), 0 states have call successors, (0), 0 states 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 00:55:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232975 states to 232975 states and 372728 transitions. [2023-12-20 00:55:54,878 INFO L78 Accepts]: Start accepts. Automaton has 232975 states and 372728 transitions. Word has length 171 [2023-12-20 00:55:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:54,878 INFO L495 AbstractCegarLoop]: Abstraction has 232975 states and 372728 transitions. [2023-12-20 00:55:54,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 232975 states and 372728 transitions. [2023-12-20 00:55:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 00:55:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:54,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:54,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 00:55:54,887 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:54,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2085463740, now seen corresponding path program 1 times [2023-12-20 00:55:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748229363] [2023-12-20 00:55:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 00:55:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748229363] [2023-12-20 00:55:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748229363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:55:54,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:55:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:55:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661408484] [2023-12-20 00:55:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:55:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:55:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:55:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:55:54,950 INFO L87 Difference]: Start difference. First operand 232975 states and 372728 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:55:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:59,759 INFO L93 Difference]: Finished difference Result 696911 states and 1114187 transitions. [2023-12-20 00:55:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:55:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-20 00:55:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:00,707 INFO L225 Difference]: With dead ends: 696911 [2023-12-20 00:56:00,707 INFO L226 Difference]: Without dead ends: 464040 [2023-12-20 00:56:00,846 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 00:56:00,846 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 318 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:00,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1130 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:01,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464040 states. [2023-12-20 00:56:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464040 to 464038. [2023-12-20 00:56:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464038 states, 464037 states have (on average 1.588504795953771) internal successors, (737125), 464037 states have internal predecessors, (737125), 0 states have call successors, (0), 0 states 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 00:56:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464038 states to 464038 states and 737125 transitions. [2023-12-20 00:56:10,464 INFO L78 Accepts]: Start accepts. Automaton has 464038 states and 737125 transitions. Word has length 171 [2023-12-20 00:56:10,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:10,464 INFO L495 AbstractCegarLoop]: Abstraction has 464038 states and 737125 transitions. [2023-12-20 00:56:10,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 464038 states and 737125 transitions. [2023-12-20 00:56:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 00:56:10,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:10,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:56:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 00:56:10,479 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2147151313, now seen corresponding path program 1 times [2023-12-20 00:56:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118538430] [2023-12-20 00:56:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 00:56:10,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:10,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118538430] [2023-12-20 00:56:10,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118538430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:10,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:10,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:10,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505020837] [2023-12-20 00:56:10,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:10,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:10,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:10,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:10,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:10,545 INFO L87 Difference]: Start difference. First operand 464038 states and 737125 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:20,930 INFO L93 Difference]: Finished difference Result 1388242 states and 2203669 transitions. [2023-12-20 00:56:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:56:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2023-12-20 00:56:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:23,086 INFO L225 Difference]: With dead ends: 1388242 [2023-12-20 00:56:23,086 INFO L226 Difference]: Without dead ends: 924364 [2023-12-20 00:56:23,370 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 00:56:23,371 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 351 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:23,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:56:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924364 states. [2023-12-20 00:56:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924364 to 924362. [2023-12-20 00:56:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924362 states, 924361 states have (on average 1.5770754066863488) internal successors, (1457787), 924361 states have internal predecessors, (1457787), 0 states have call successors, (0), 0 states 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 00:56:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924362 states to 924362 states and 1457787 transitions. [2023-12-20 00:56:45,417 INFO L78 Accepts]: Start accepts. Automaton has 924362 states and 1457787 transitions. Word has length 171 [2023-12-20 00:56:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:45,418 INFO L495 AbstractCegarLoop]: Abstraction has 924362 states and 1457787 transitions. [2023-12-20 00:56:45,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 00:56:45,418 INFO L276 IsEmpty]: Start isEmpty. Operand 924362 states and 1457787 transitions. [2023-12-20 00:56:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 00:56:45,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:45,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:56:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 00:56:45,442 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:45,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1798342746, now seen corresponding path program 1 times [2023-12-20 00:56:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505038175] [2023-12-20 00:56:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 00:56:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:45,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505038175] [2023-12-20 00:56:45,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505038175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:56:45,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:56:45,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:56:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213965999] [2023-12-20 00:56:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:56:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:56:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:56:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:56:45,590 INFO L87 Difference]: Start difference. First operand 924362 states and 1457787 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)