/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/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:13:15,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:13:15,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:13:15,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:13:15,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:13:15,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:13:15,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:13:15,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:13:15,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:13:15,837 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:13:15,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:13:15,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:13:15,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:13:15,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:13:15,839 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:13:15,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:13:15,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:13:15,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:13:15,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:13:15,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:13:15,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:13:15,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:13:15,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:13:15,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:13:15,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:13:15,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:13:15,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:13:15,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:13:15,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:13:15,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:13:15,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:13:15,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:13:15,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:13:15,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:13:15,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:13:15,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:13:15,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:13:15,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:13:15,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:13:15,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:13:15,845 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:13:15,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:13:15,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:13:15,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:13:15,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:13:16,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:13:16,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:13:16,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:13:16,011 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:13:16,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:13:17,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:13:17,405 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:13:17,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:13:17,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62acf6027/123193a61c9f4659afea07fcdad2f39f/FLAGeeb724c55 [2023-12-19 00:13:17,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62acf6027/123193a61c9f4659afea07fcdad2f39f [2023-12-19 00:13:17,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:13:17,449 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:13:17,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:13:17,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:13:17,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:13:17,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:13:17" (1/1) ... [2023-12-19 00:13:17,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50bca4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:17, skipping insertion in model container [2023-12-19 00:13:17,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:13:17" (1/1) ... [2023-12-19 00:13:17,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:13:17,806 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2023-12-19 00:13:17,844 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2023-12-19 00:13:18,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:13:18,323 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:13:18,350 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[11705,11718] [2023-12-19 00:13:18,356 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c[18995,19008] [2023-12-19 00:13:18,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:13:18,666 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:13:18,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18 WrapperNode [2023-12-19 00:13:18,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:13:18,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:13:18,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:13:18,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:13:18,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:18,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:18,966 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-12-19 00:13:18,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:13:18,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:13:18,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:13:18,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:13:18,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:18,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,171 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]. [2023-12-19 00:13:19,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:13:19,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:13:19,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:13:19,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:13:19,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (1/1) ... [2023-12-19 00:13:19,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:13:19,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:19,465 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) [2023-12-19 00:13:19,487 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 [2023-12-19 00:13:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:13:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:13:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:13:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:13:19,617 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:13:19,636 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:13:22,625 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:13:22,666 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:13:22,667 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:13:22,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:13:22 BoogieIcfgContainer [2023-12-19 00:13:22,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:13:22,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:13:22,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:13:22,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:13:22,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:13:17" (1/3) ... [2023-12-19 00:13:22,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0f181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:13:22, skipping insertion in model container [2023-12-19 00:13:22,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:13:18" (2/3) ... [2023-12-19 00:13:22,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0f181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:13:22, skipping insertion in model container [2023-12-19 00:13:22,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:13:22" (3/3) ... [2023-12-19 00:13:22,673 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:13:22,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:13:22,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:13:22,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:13:22,729 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;@e2c0b3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:13:22,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:13:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:13:22,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:22,740 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] [2023-12-19 00:13:22,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:22,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:22,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1695125417, now seen corresponding path program 1 times [2023-12-19 00:13:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594117937] [2023-12-19 00:13:22,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:22,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594117937] [2023-12-19 00:13:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594117937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:22,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:22,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:13:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608977343] [2023-12-19 00:13:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:13:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:13:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:13:22,895 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:22,981 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-19 00:13:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:13:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:13:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:23,001 INFO L225 Difference]: With dead ends: 1636 [2023-12-19 00:13:23,001 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:13:23,008 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 [2023-12-19 00:13:23,010 INFO L413 NwaCegarLoop]: 1573 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, 1573 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 [2023-12-19 00:13:23,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:13:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:13:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-19 00:13:23,061 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-19 00:13:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:23,061 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-19 00:13:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-19 00:13:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:13:23,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:23,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:23,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:13:23,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:23,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash 106777515, now seen corresponding path program 1 times [2023-12-19 00:13:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:23,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26628100] [2023-12-19 00:13:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:23,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26628100] [2023-12-19 00:13:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26628100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:23,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:13:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379665309] [2023-12-19 00:13:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:23,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:13:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:13:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:13:23,258 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:23,315 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-19 00:13:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:13:23,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:13:23,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:23,317 INFO L225 Difference]: With dead ends: 878 [2023-12-19 00:13:23,318 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:13:23,318 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 [2023-12-19 00:13:23,319 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:23,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:13:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:13:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-19 00:13:23,333 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-19 00:13:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:23,333 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-19 00:13:23,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-19 00:13:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:13:23,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:23,334 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] [2023-12-19 00:13:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:13:23,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:23,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1212971778, now seen corresponding path program 1 times [2023-12-19 00:13:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:23,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730154255] [2023-12-19 00:13:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:23,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730154255] [2023-12-19 00:13:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730154255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:23,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893059671] [2023-12-19 00:13:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:23,462 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:23,666 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2023-12-19 00:13:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:13:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-19 00:13:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:23,670 INFO L225 Difference]: With dead ends: 1262 [2023-12-19 00:13:23,670 INFO L226 Difference]: Without dead ends: 1219 [2023-12-19 00:13:23,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:13:23,672 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:23,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-19 00:13:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2023-12-19 00:13:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2023-12-19 00:13:23,686 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2023-12-19 00:13:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:23,686 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2023-12-19 00:13:23,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2023-12-19 00:13:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:13:23,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:23,688 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] [2023-12-19 00:13:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:13:23,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:23,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1583069298, now seen corresponding path program 1 times [2023-12-19 00:13:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815218636] [2023-12-19 00:13:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:23,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:23,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815218636] [2023-12-19 00:13:23,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815218636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:23,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:23,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:23,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260438077] [2023-12-19 00:13:23,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:23,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:23,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:23,785 INFO L87 Difference]: Start difference. First operand 873 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:23,812 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2023-12-19 00:13:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:13:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:23,815 INFO L225 Difference]: With dead ends: 1030 [2023-12-19 00:13:23,815 INFO L226 Difference]: Without dead ends: 946 [2023-12-19 00:13:23,815 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 [2023-12-19 00:13:23,816 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:23,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-19 00:13:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2023-12-19 00:13:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2023-12-19 00:13:23,830 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2023-12-19 00:13:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:23,830 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2023-12-19 00:13:23,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2023-12-19 00:13:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:13:23,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:23,832 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] [2023-12-19 00:13:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:13:23,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:23,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1585214250, now seen corresponding path program 1 times [2023-12-19 00:13:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058508356] [2023-12-19 00:13:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058508356] [2023-12-19 00:13:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058508356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:23,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294238388] [2023-12-19 00:13:23,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:23,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:23,998 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,141 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2023-12-19 00:13:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-19 00:13:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,145 INFO L225 Difference]: With dead ends: 1097 [2023-12-19 00:13:24,145 INFO L226 Difference]: Without dead ends: 944 [2023-12-19 00:13:24,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:13:24,146 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:24,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-19 00:13:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-12-19 00:13:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-12-19 00:13:24,159 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2023-12-19 00:13:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,159 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-12-19 00:13:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-12-19 00:13:24,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:13:24,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,160 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] [2023-12-19 00:13:24,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:13:24,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1767897232, now seen corresponding path program 1 times [2023-12-19 00:13:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869623735] [2023-12-19 00:13:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869623735] [2023-12-19 00:13:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869623735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:13:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931157206] [2023-12-19 00:13:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:13:24,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:13:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:13:24,259 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,286 INFO L93 Difference]: Finished difference Result 950 states and 1724 transitions. [2023-12-19 00:13:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:13:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-19 00:13:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,290 INFO L225 Difference]: With dead ends: 950 [2023-12-19 00:13:24,291 INFO L226 Difference]: Without dead ends: 948 [2023-12-19 00:13:24,291 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 [2023-12-19 00:13:24,291 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:24,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-19 00:13:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2023-12-19 00:13:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2023-12-19 00:13:24,305 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2023-12-19 00:13:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,305 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2023-12-19 00:13:24,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,305 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2023-12-19 00:13:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:13:24,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:24,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:13:24,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112714, now seen corresponding path program 1 times [2023-12-19 00:13:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298467138] [2023-12-19 00:13:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298467138] [2023-12-19 00:13:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298467138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038783979] [2023-12-19 00:13:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,363 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,386 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2023-12-19 00:13:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:13:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,391 INFO L225 Difference]: With dead ends: 1244 [2023-12-19 00:13:24,391 INFO L226 Difference]: Without dead ends: 1087 [2023-12-19 00:13:24,392 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 [2023-12-19 00:13:24,395 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 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 [2023-12-19 00:13:24,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-19 00:13:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-19 00:13:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2023-12-19 00:13:24,412 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2023-12-19 00:13:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,412 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2023-12-19 00:13:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2023-12-19 00:13:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:13:24,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,413 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] [2023-12-19 00:13:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:13:24,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1963056650, now seen corresponding path program 1 times [2023-12-19 00:13:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071101168] [2023-12-19 00:13:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071101168] [2023-12-19 00:13:24,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071101168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260270947] [2023-12-19 00:13:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,454 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,479 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2023-12-19 00:13:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:24,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:13:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,484 INFO L225 Difference]: With dead ends: 1645 [2023-12-19 00:13:24,484 INFO L226 Difference]: Without dead ends: 1349 [2023-12-19 00:13:24,484 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 [2023-12-19 00:13:24,485 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 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 [2023-12-19 00:13:24,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-19 00:13:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2023-12-19 00:13:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2023-12-19 00:13:24,508 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2023-12-19 00:13:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,509 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2023-12-19 00:13:24,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2023-12-19 00:13:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:13:24,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,510 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] [2023-12-19 00:13:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:13:24,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1337400586, now seen corresponding path program 1 times [2023-12-19 00:13:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364074640] [2023-12-19 00:13:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364074640] [2023-12-19 00:13:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364074640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812946660] [2023-12-19 00:13:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,563 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,590 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2023-12-19 00:13:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:13:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,596 INFO L225 Difference]: With dead ends: 2399 [2023-12-19 00:13:24,598 INFO L226 Difference]: Without dead ends: 1841 [2023-12-19 00:13:24,599 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 [2023-12-19 00:13:24,602 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 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 [2023-12-19 00:13:24,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-19 00:13:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2023-12-19 00:13:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2023-12-19 00:13:24,632 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2023-12-19 00:13:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,633 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2023-12-19 00:13:24,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2023-12-19 00:13:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:13:24,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,633 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] [2023-12-19 00:13:24,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:13:24,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2068833270, now seen corresponding path program 1 times [2023-12-19 00:13:24,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57954611] [2023-12-19 00:13:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57954611] [2023-12-19 00:13:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57954611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:24,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250175788] [2023-12-19 00:13:24,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,667 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,705 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2023-12-19 00:13:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:24,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-19 00:13:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,711 INFO L225 Difference]: With dead ends: 3811 [2023-12-19 00:13:24,711 INFO L226 Difference]: Without dead ends: 2761 [2023-12-19 00:13:24,714 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 [2023-12-19 00:13:24,714 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 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 [2023-12-19 00:13:24,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-19 00:13:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-19 00:13:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2023-12-19 00:13:24,762 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2023-12-19 00:13:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,762 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2023-12-19 00:13:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2023-12-19 00:13:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 00:13:24,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,763 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] [2023-12-19 00:13:24,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:13:24,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1474848977, now seen corresponding path program 1 times [2023-12-19 00:13:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217894297] [2023-12-19 00:13:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217894297] [2023-12-19 00:13:24,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217894297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:24,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:24,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:24,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898714419] [2023-12-19 00:13:24,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:24,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:24,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,844 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:24,897 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2023-12-19 00:13:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-19 00:13:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:24,906 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:13:24,907 INFO L226 Difference]: Without dead ends: 3691 [2023-12-19 00:13:24,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:24,908 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 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 [2023-12-19 00:13:24,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2023-12-19 00:13:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2023-12-19 00:13:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2023-12-19 00:13:24,973 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2023-12-19 00:13:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:24,973 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2023-12-19 00:13:24,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2023-12-19 00:13:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:13:24,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:24,974 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] [2023-12-19 00:13:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:13:24,974 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:24,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:24,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1775244357, now seen corresponding path program 1 times [2023-12-19 00:13:24,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:24,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989370922] [2023-12-19 00:13:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989370922] [2023-12-19 00:13:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989370922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:25,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358729148] [2023-12-19 00:13:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:13:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:13:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:13:25,063 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:30,204 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2023-12-19 00:13:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:13:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-19 00:13:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:30,223 INFO L225 Difference]: With dead ends: 5944 [2023-12-19 00:13:30,223 INFO L226 Difference]: Without dead ends: 5191 [2023-12-19 00:13:30,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 00:13:30,225 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2384 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:30,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 00:13:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-12-19 00:13:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-12-19 00:13:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2023-12-19 00:13:30,329 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 62 [2023-12-19 00:13:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:30,329 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2023-12-19 00:13:30,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2023-12-19 00:13:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:13:30,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:30,333 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:30,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:13:30,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:30,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1067448203, now seen corresponding path program 1 times [2023-12-19 00:13:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252583376] [2023-12-19 00:13:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:30,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:13:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:30,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252583376] [2023-12-19 00:13:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252583376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:30,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661521136] [2023-12-19 00:13:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:30,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:30,443 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:30,835 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2023-12-19 00:13:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-19 00:13:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:30,880 INFO L225 Difference]: With dead ends: 20291 [2023-12-19 00:13:30,880 INFO L226 Difference]: Without dead ends: 17393 [2023-12-19 00:13:30,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:30,890 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:30,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-19 00:13:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2023-12-19 00:13:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2023-12-19 00:13:31,098 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2023-12-19 00:13:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:31,098 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2023-12-19 00:13:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2023-12-19 00:13:31,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:13:31,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:31,099 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:31,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:13:31,100 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:31,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1107392139, now seen corresponding path program 1 times [2023-12-19 00:13:31,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:31,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859547595] [2023-12-19 00:13:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:13:31,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859547595] [2023-12-19 00:13:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859547595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869090353] [2023-12-19 00:13:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:31,206 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:31,643 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2023-12-19 00:13:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-19 00:13:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:31,670 INFO L225 Difference]: With dead ends: 23187 [2023-12-19 00:13:31,670 INFO L226 Difference]: Without dead ends: 20289 [2023-12-19 00:13:31,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:31,675 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:31,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2023-12-19 00:13:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2023-12-19 00:13:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2023-12-19 00:13:31,969 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2023-12-19 00:13:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:31,969 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2023-12-19 00:13:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2023-12-19 00:13:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:13:31,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:31,971 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:31,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:13:31,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:31,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 481736075, now seen corresponding path program 1 times [2023-12-19 00:13:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:31,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508937215] [2023-12-19 00:13:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:13:32,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508937215] [2023-12-19 00:13:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508937215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:32,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186966277] [2023-12-19 00:13:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:32,075 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:32,565 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2023-12-19 00:13:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-19 00:13:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:32,597 INFO L225 Difference]: With dead ends: 26083 [2023-12-19 00:13:32,597 INFO L226 Difference]: Without dead ends: 23185 [2023-12-19 00:13:32,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:32,604 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2023-12-19 00:13:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2023-12-19 00:13:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2023-12-19 00:13:32,989 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2023-12-19 00:13:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:32,989 INFO L495 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2023-12-19 00:13:32,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2023-12-19 00:13:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:13:32,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:32,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:32,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:13:32,991 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:32,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1370469515, now seen corresponding path program 1 times [2023-12-19 00:13:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:32,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552752430] [2023-12-19 00:13:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:13:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552752430] [2023-12-19 00:13:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552752430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:33,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851894870] [2023-12-19 00:13:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:33,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:33,106 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:33,749 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2023-12-19 00:13:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-19 00:13:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:33,791 INFO L225 Difference]: With dead ends: 28979 [2023-12-19 00:13:33,791 INFO L226 Difference]: Without dead ends: 26081 [2023-12-19 00:13:33,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:33,800 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:33,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:33,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2023-12-19 00:13:34,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2023-12-19 00:13:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2023-12-19 00:13:34,373 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2023-12-19 00:13:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:34,373 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2023-12-19 00:13:34,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2023-12-19 00:13:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:13:34,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:34,375 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:34,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:13:34,375 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:34,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash -823987853, now seen corresponding path program 1 times [2023-12-19 00:13:34,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:34,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061923892] [2023-12-19 00:13:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:34,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:34,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061923892] [2023-12-19 00:13:34,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061923892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:34,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:34,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159776125] [2023-12-19 00:13:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:34,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:34,449 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:34,654 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2023-12-19 00:13:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:34,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-19 00:13:34,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:34,670 INFO L225 Difference]: With dead ends: 29518 [2023-12-19 00:13:34,670 INFO L226 Difference]: Without dead ends: 13580 [2023-12-19 00:13:34,683 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 [2023-12-19 00:13:34,684 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:34,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2023-12-19 00:13:35,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2023-12-19 00:13:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2023-12-19 00:13:35,037 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2023-12-19 00:13:35,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:35,037 INFO L495 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2023-12-19 00:13:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2023-12-19 00:13:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:13:35,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:35,039 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:13:35,039 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 865276784, now seen corresponding path program 1 times [2023-12-19 00:13:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317815718] [2023-12-19 00:13:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:35,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:35,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317815718] [2023-12-19 00:13:35,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317815718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:35,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:35,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:13:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276479833] [2023-12-19 00:13:35,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:13:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:13:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:13:35,165 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-19 00:13:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:35,549 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2023-12-19 00:13:35,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:13:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 75 [2023-12-19 00:13:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:35,575 INFO L225 Difference]: With dead ends: 23830 [2023-12-19 00:13:35,576 INFO L226 Difference]: Without dead ends: 21780 [2023-12-19 00:13:35,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:13:35,583 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:35,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:13:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2023-12-19 00:13:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2023-12-19 00:13:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2023-12-19 00:13:36,036 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2023-12-19 00:13:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:36,036 INFO L495 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2023-12-19 00:13:36,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2023-12-19 00:13:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2023-12-19 00:13:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:13:36,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:36,038 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] [2023-12-19 00:13:36,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:13:36,038 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:36,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2077236487, now seen corresponding path program 1 times [2023-12-19 00:13:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261296236] [2023-12-19 00:13:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:36,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261296236] [2023-12-19 00:13:36,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261296236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:36,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848937672] [2023-12-19 00:13:36,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:36,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:36,104 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:36,240 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2023-12-19 00:13:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 00:13:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:36,248 INFO L225 Difference]: With dead ends: 22286 [2023-12-19 00:13:36,249 INFO L226 Difference]: Without dead ends: 8972 [2023-12-19 00:13:36,259 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 [2023-12-19 00:13:36,260 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:36,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:36,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2023-12-19 00:13:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2023-12-19 00:13:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2023-12-19 00:13:36,430 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2023-12-19 00:13:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:36,430 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2023-12-19 00:13:36,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2023-12-19 00:13:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:13:36,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:36,431 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:36,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:13:36,432 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1152666791, now seen corresponding path program 1 times [2023-12-19 00:13:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094562729] [2023-12-19 00:13:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:36,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:36,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094562729] [2023-12-19 00:13:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094562729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:36,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747115620] [2023-12-19 00:13:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:36,493 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:36,572 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2023-12-19 00:13:36,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 00:13:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:36,577 INFO L225 Difference]: With dead ends: 12302 [2023-12-19 00:13:36,577 INFO L226 Difference]: Without dead ends: 5644 [2023-12-19 00:13:36,582 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 [2023-12-19 00:13:36,583 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:36,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-19 00:13:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2023-12-19 00:13:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2023-12-19 00:13:36,675 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2023-12-19 00:13:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:36,676 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2023-12-19 00:13:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2023-12-19 00:13:36,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:13:36,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:36,677 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:36,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:13:36,678 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:36,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:36,678 INFO L85 PathProgramCache]: Analyzing trace with hash 592619477, now seen corresponding path program 1 times [2023-12-19 00:13:36,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:36,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582365359] [2023-12-19 00:13:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:36,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582365359] [2023-12-19 00:13:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582365359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727615840] [2023-12-19 00:13:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:36,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:36,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:36,761 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:36,834 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2023-12-19 00:13:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:36,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-19 00:13:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:36,839 INFO L225 Difference]: With dead ends: 7310 [2023-12-19 00:13:36,839 INFO L226 Difference]: Without dead ends: 3980 [2023-12-19 00:13:36,843 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 [2023-12-19 00:13:36,843 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:36,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-19 00:13:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-12-19 00:13:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2023-12-19 00:13:36,926 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2023-12-19 00:13:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:36,926 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2023-12-19 00:13:36,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2023-12-19 00:13:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:13:36,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:36,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:36,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:13:36,927 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:36,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash -495332221, now seen corresponding path program 1 times [2023-12-19 00:13:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:36,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784417982] [2023-12-19 00:13:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:36,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784417982] [2023-12-19 00:13:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784417982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:13:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:13:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:13:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390108837] [2023-12-19 00:13:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:13:36,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:13:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:13:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:13:36,988 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:37,024 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2023-12-19 00:13:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:13:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-19 00:13:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:37,028 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:13:37,028 INFO L226 Difference]: Without dead ends: 3148 [2023-12-19 00:13:37,030 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 [2023-12-19 00:13:37,031 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:37,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:13:37,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-19 00:13:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2023-12-19 00:13:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2023-12-19 00:13:37,075 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2023-12-19 00:13:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:37,075 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2023-12-19 00:13:37,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2023-12-19 00:13:37,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:13:37,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:37,076 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:13:37,076 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:37,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash -323964239, now seen corresponding path program 1 times [2023-12-19 00:13:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:37,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195526231] [2023-12-19 00:13:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:37,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:37,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195526231] [2023-12-19 00:13:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195526231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041841903] [2023-12-19 00:13:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:37,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:37,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:37,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:13:37,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:13:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:37,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:13:37,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:38,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:13:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041841903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:38,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:13:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479790938] [2023-12-19 00:13:38,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:13:38,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:13:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:13:38,198 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:39,984 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2023-12-19 00:13:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:13:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 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 84 [2023-12-19 00:13:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:39,991 INFO L225 Difference]: With dead ends: 9609 [2023-12-19 00:13:39,992 INFO L226 Difference]: Without dead ends: 8775 [2023-12-19 00:13:39,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:13:39,995 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11949 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:39,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11949 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:13:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2023-12-19 00:13:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8479. [2023-12-19 00:13:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8477 states have (on average 1.371357791671582) internal successors, (11625), 8478 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11625 transitions. [2023-12-19 00:13:40,285 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11625 transitions. Word has length 84 [2023-12-19 00:13:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:40,285 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11625 transitions. [2023-12-19 00:13:40,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11625 transitions. [2023-12-19 00:13:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:13:40,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:40,287 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:40,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:13:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 00:13:40,493 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:40,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -152858016, now seen corresponding path program 1 times [2023-12-19 00:13:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751523574] [2023-12-19 00:13:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751523574] [2023-12-19 00:13:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751523574] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068848798] [2023-12-19 00:13:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:40,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:40,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:40,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:13:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:13:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:40,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:13:40,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:41,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068848798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:41,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:41,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 00:13:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561654587] [2023-12-19 00:13:41,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 00:13:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 00:13:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 00:13:41,883 INFO L87 Difference]: Start difference. First operand 8479 states and 11625 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:43,988 INFO L93 Difference]: Finished difference Result 22957 states and 30262 transitions. [2023-12-19 00:13:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:13:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 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 85 [2023-12-19 00:13:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:44,007 INFO L225 Difference]: With dead ends: 22957 [2023-12-19 00:13:44,007 INFO L226 Difference]: Without dead ends: 16832 [2023-12-19 00:13:44,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 00:13:44,015 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 25212 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25212 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:44,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25212 Valid, 6628 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:13:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16832 states. [2023-12-19 00:13:44,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16832 to 16208. [2023-12-19 00:13:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16208 states, 16206 states have (on average 1.3220412193014932) internal successors, (21425), 16207 states have internal predecessors, (21425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16208 states to 16208 states and 21425 transitions. [2023-12-19 00:13:44,549 INFO L78 Accepts]: Start accepts. Automaton has 16208 states and 21425 transitions. Word has length 85 [2023-12-19 00:13:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:44,550 INFO L495 AbstractCegarLoop]: Abstraction has 16208 states and 21425 transitions. [2023-12-19 00:13:44,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16208 states and 21425 transitions. [2023-12-19 00:13:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:13:44,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:44,551 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:44,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 00:13:44,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:13:44,757 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:44,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -326486610, now seen corresponding path program 1 times [2023-12-19 00:13:44,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:44,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479273675] [2023-12-19 00:13:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:44,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479273675] [2023-12-19 00:13:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479273675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596639202] [2023-12-19 00:13:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:45,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:13:45,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:13:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:45,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:13:45,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:45,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596639202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:46,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 00:13:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47266838] [2023-12-19 00:13:46,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:46,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 00:13:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 00:13:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-19 00:13:46,793 INFO L87 Difference]: Start difference. First operand 16208 states and 21425 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:49,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:49,900 INFO L93 Difference]: Finished difference Result 35194 states and 45629 transitions. [2023-12-19 00:13:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:13:49,901 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 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 85 [2023-12-19 00:13:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:49,924 INFO L225 Difference]: With dead ends: 35194 [2023-12-19 00:13:49,924 INFO L226 Difference]: Without dead ends: 22907 [2023-12-19 00:13:49,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 00:13:49,935 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14132 mSDsluCounter, 15466 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14132 SdHoareTripleChecker+Valid, 16985 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:49,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14132 Valid, 16985 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:13:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2023-12-19 00:13:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 22213. [2023-12-19 00:13:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22213 states, 22211 states have (on average 1.2978254018279232) internal successors, (28826), 22212 states have internal predecessors, (28826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22213 states to 22213 states and 28826 transitions. [2023-12-19 00:13:50,646 INFO L78 Accepts]: Start accepts. Automaton has 22213 states and 28826 transitions. Word has length 85 [2023-12-19 00:13:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:50,646 INFO L495 AbstractCegarLoop]: Abstraction has 22213 states and 28826 transitions. [2023-12-19 00:13:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 22213 states and 28826 transitions. [2023-12-19 00:13:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:13:50,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:50,647 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:13:50,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:13:50,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:50,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:50,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash 8311151, now seen corresponding path program 1 times [2023-12-19 00:13:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:50,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704185554] [2023-12-19 00:13:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704185554] [2023-12-19 00:13:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704185554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562691882] [2023-12-19 00:13:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:51,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:51,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:51,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:13:51,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:13:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:51,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 00:13:51,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:13:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:53,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:13:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:55,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562691882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:13:55,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:13:55,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-19 00:13:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132403347] [2023-12-19 00:13:55,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:13:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 00:13:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:13:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 00:13:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:13:55,318 INFO L87 Difference]: Start difference. First operand 22213 states and 28826 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:13,780 INFO L93 Difference]: Finished difference Result 79043 states and 101136 transitions. [2023-12-19 00:14:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:14:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:14:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:13,858 INFO L225 Difference]: With dead ends: 79043 [2023-12-19 00:14:13,858 INFO L226 Difference]: Without dead ends: 61048 [2023-12-19 00:14:13,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-19 00:14:13,883 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 23988 mSDsluCounter, 18235 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23988 SdHoareTripleChecker+Valid, 19787 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:13,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23988 Valid, 19787 Invalid, 2815 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 00:14:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61048 states. [2023-12-19 00:14:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61048 to 52974. [2023-12-19 00:14:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52974 states, 52972 states have (on average 1.2715019255455713) internal successors, (67354), 52973 states have internal predecessors, (67354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52974 states to 52974 states and 67354 transitions. [2023-12-19 00:14:16,252 INFO L78 Accepts]: Start accepts. Automaton has 52974 states and 67354 transitions. Word has length 86 [2023-12-19 00:14:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:16,252 INFO L495 AbstractCegarLoop]: Abstraction has 52974 states and 67354 transitions. [2023-12-19 00:14:16,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 52974 states and 67354 transitions. [2023-12-19 00:14:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:14:16,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:16,254 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:14:16,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 00:14:16,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:14:16,459 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:16,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:16,459 INFO L85 PathProgramCache]: Analyzing trace with hash -12119242, now seen corresponding path program 1 times [2023-12-19 00:14:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:16,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545105715] [2023-12-19 00:14:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:16,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545105715] [2023-12-19 00:14:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545105715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133440126] [2023-12-19 00:14:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:16,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:16,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:14:16,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:14:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:16,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:14:16,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:17,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133440126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:18,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:18,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-19 00:14:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619335371] [2023-12-19 00:14:18,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:14:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:14:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:14:18,375 INFO L87 Difference]: Start difference. First operand 52974 states and 67354 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:27,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:27,746 INFO L93 Difference]: Finished difference Result 181364 states and 229065 transitions. [2023-12-19 00:14:27,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-19 00:14:27,747 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 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 87 [2023-12-19 00:14:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:27,925 INFO L225 Difference]: With dead ends: 181364 [2023-12-19 00:14:27,925 INFO L226 Difference]: Without dead ends: 134334 [2023-12-19 00:14:27,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4710 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2147, Invalid=12615, Unknown=0, NotChecked=0, Total=14762 [2023-12-19 00:14:27,954 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 23925 mSDsluCounter, 12492 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23925 SdHoareTripleChecker+Valid, 13997 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:27,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23925 Valid, 13997 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 00:14:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134334 states. [2023-12-19 00:14:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134334 to 48640. [2023-12-19 00:14:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48640 states, 48638 states have (on average 1.2589744644105432) internal successors, (61234), 48639 states have internal predecessors, (61234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:30,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48640 states to 48640 states and 61234 transitions. [2023-12-19 00:14:30,756 INFO L78 Accepts]: Start accepts. Automaton has 48640 states and 61234 transitions. Word has length 87 [2023-12-19 00:14:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:30,758 INFO L495 AbstractCegarLoop]: Abstraction has 48640 states and 61234 transitions. [2023-12-19 00:14:30,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 48640 states and 61234 transitions. [2023-12-19 00:14:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:14:30,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:30,764 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:14:30,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:14:30,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:14:30,970 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:30,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 678905639, now seen corresponding path program 1 times [2023-12-19 00:14:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931488707] [2023-12-19 00:14:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:33,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931488707] [2023-12-19 00:14:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931488707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125125760] [2023-12-19 00:14:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:33,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:33,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:14:33,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:14:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:33,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:14:33,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:34,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125125760] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:35,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-19 00:14:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873950485] [2023-12-19 00:14:35,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:35,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 00:14:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 00:14:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 00:14:35,881 INFO L87 Difference]: Start difference. First operand 48640 states and 61234 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:03,458 INFO L93 Difference]: Finished difference Result 104742 states and 130643 transitions. [2023-12-19 00:15:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:15:03,458 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 88 [2023-12-19 00:15:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:03,562 INFO L225 Difference]: With dead ends: 104742 [2023-12-19 00:15:03,562 INFO L226 Difference]: Without dead ends: 87747 [2023-12-19 00:15:03,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12678 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=6746, Invalid=32656, Unknown=0, NotChecked=0, Total=39402 [2023-12-19 00:15:03,583 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 24508 mSDsluCounter, 34469 mSDsCounter, 0 mSdLazyCounter, 5025 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24508 SdHoareTripleChecker+Valid, 35985 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:03,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24508 Valid, 35985 Invalid, 5216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 5025 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 00:15:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87747 states. [2023-12-19 00:15:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87747 to 43567. [2023-12-19 00:15:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43567 states, 43565 states have (on average 1.2592677608171698) internal successors, (54860), 43566 states have internal predecessors, (54860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43567 states to 43567 states and 54860 transitions. [2023-12-19 00:15:06,140 INFO L78 Accepts]: Start accepts. Automaton has 43567 states and 54860 transitions. Word has length 88 [2023-12-19 00:15:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:15:06,141 INFO L495 AbstractCegarLoop]: Abstraction has 43567 states and 54860 transitions. [2023-12-19 00:15:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 43567 states and 54860 transitions. [2023-12-19 00:15:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 00:15:06,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:15:06,142 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:15:06,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:15:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:15:06,346 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:15:06,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:15:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1440817043, now seen corresponding path program 1 times [2023-12-19 00:15:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:15:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917924265] [2023-12-19 00:15:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:15:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:15:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917924265] [2023-12-19 00:15:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917924265] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:15:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063604650] [2023-12-19 00:15:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:15:08,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:15:08,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:15:08,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:15:08,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:15:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:15:08,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 00:15:08,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:15:11,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:11,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:15:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:15:15,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063604650] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:15:15,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:15:15,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-19 00:15:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415591741] [2023-12-19 00:15:15,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:15:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 00:15:15,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:15:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 00:15:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:15:15,390 INFO L87 Difference]: Start difference. First operand 43567 states and 54860 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:01,461 INFO L93 Difference]: Finished difference Result 101777 states and 126436 transitions. [2023-12-19 00:16:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-12-19 00:16:01,462 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-19 00:16:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:01,536 INFO L225 Difference]: With dead ends: 101777 [2023-12-19 00:16:01,536 INFO L226 Difference]: Without dead ends: 85953 [2023-12-19 00:16:01,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20166 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=9509, Invalid=46897, Unknown=0, NotChecked=0, Total=56406 [2023-12-19 00:16:01,549 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 26836 mSDsluCounter, 31827 mSDsCounter, 0 mSdLazyCounter, 6910 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26836 SdHoareTripleChecker+Valid, 33364 SdHoareTripleChecker+Invalid, 7114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 6910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:01,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26836 Valid, 33364 Invalid, 7114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [204 Valid, 6910 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 00:16:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85953 states. [2023-12-19 00:16:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85953 to 51582. [2023-12-19 00:16:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51582 states, 51580 states have (on average 1.2586855370298566) internal successors, (64923), 51581 states have internal predecessors, (64923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51582 states to 51582 states and 64923 transitions. [2023-12-19 00:16:04,849 INFO L78 Accepts]: Start accepts. Automaton has 51582 states and 64923 transitions. Word has length 90 [2023-12-19 00:16:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:04,849 INFO L495 AbstractCegarLoop]: Abstraction has 51582 states and 64923 transitions. [2023-12-19 00:16:04,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 51582 states and 64923 transitions. [2023-12-19 00:16:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 00:16:04,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:04,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:16:04,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 00:16:05,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:05,061 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:05,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 184603091, now seen corresponding path program 1 times [2023-12-19 00:16:05,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105834664] [2023-12-19 00:16:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:05,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105834664] [2023-12-19 00:16:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105834664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:16:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:16:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:16:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239095612] [2023-12-19 00:16:05,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:16:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:16:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:16:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:16:05,177 INFO L87 Difference]: Start difference. First operand 51582 states and 64923 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:11,355 INFO L93 Difference]: Finished difference Result 54625 states and 70571 transitions. [2023-12-19 00:16:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:16:11,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-19 00:16:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:11,408 INFO L225 Difference]: With dead ends: 54625 [2023-12-19 00:16:11,408 INFO L226 Difference]: Without dead ends: 53084 [2023-12-19 00:16:11,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:16:11,418 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 792 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:11,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 915 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 00:16:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53084 states. [2023-12-19 00:16:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53084 to 53084. [2023-12-19 00:16:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53084 states, 53082 states have (on average 1.2527975584944049) internal successors, (66501), 53083 states have internal predecessors, (66501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53084 states to 53084 states and 66501 transitions. [2023-12-19 00:16:14,521 INFO L78 Accepts]: Start accepts. Automaton has 53084 states and 66501 transitions. Word has length 133 [2023-12-19 00:16:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:14,521 INFO L495 AbstractCegarLoop]: Abstraction has 53084 states and 66501 transitions. [2023-12-19 00:16:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 53084 states and 66501 transitions. [2023-12-19 00:16:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:16:14,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:14,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-19 00:16:14,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 00:16:14,527 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:14,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -242955006, now seen corresponding path program 1 times [2023-12-19 00:16:14,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:14,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55435986] [2023-12-19 00:16:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55435986] [2023-12-19 00:16:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55435986] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715779606] [2023-12-19 00:16:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:15,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:15,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:15,071 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:15,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:16:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:15,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:16:15,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 46 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:15,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715779606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:17,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:17,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-19 00:16:17,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183662529] [2023-12-19 00:16:17,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:17,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:16:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:16:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:16:17,712 INFO L87 Difference]: Start difference. First operand 53084 states and 66501 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:27,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:27,692 INFO L93 Difference]: Finished difference Result 163247 states and 204277 transitions. [2023-12-19 00:16:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-19 00:16:27,693 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-19 00:16:27,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:27,829 INFO L225 Difference]: With dead ends: 163247 [2023-12-19 00:16:27,829 INFO L226 Difference]: Without dead ends: 117430 [2023-12-19 00:16:27,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1823, Invalid=8077, Unknown=0, NotChecked=0, Total=9900 [2023-12-19 00:16:27,848 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 21204 mSDsluCounter, 12479 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21204 SdHoareTripleChecker+Valid, 13964 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:27,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21204 Valid, 13964 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:16:27,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117430 states. [2023-12-19 00:16:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117430 to 91616. [2023-12-19 00:16:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91616 states, 91614 states have (on average 1.2277162879035954) internal successors, (112476), 91615 states have internal predecessors, (112476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91616 states to 91616 states and 112476 transitions. [2023-12-19 00:16:34,220 INFO L78 Accepts]: Start accepts. Automaton has 91616 states and 112476 transitions. Word has length 138 [2023-12-19 00:16:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:34,221 INFO L495 AbstractCegarLoop]: Abstraction has 91616 states and 112476 transitions. [2023-12-19 00:16:34,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 91616 states and 112476 transitions. [2023-12-19 00:16:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:16:34,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:34,230 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 00:16:34,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:34,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-19 00:16:34,436 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:34,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1614121552, now seen corresponding path program 1 times [2023-12-19 00:16:34,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948486515] [2023-12-19 00:16:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948486515] [2023-12-19 00:16:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948486515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806209564] [2023-12-19 00:16:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:34,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:34,946 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:34,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:16:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:35,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:16:35,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 32 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:35,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806209564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:37,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:37,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-12-19 00:16:37,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530472283] [2023-12-19 00:16:37,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:37,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:16:37,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:16:37,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:16:37,221 INFO L87 Difference]: Start difference. First operand 91616 states and 112476 transitions. Second operand has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:48,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:48,151 INFO L93 Difference]: Finished difference Result 157525 states and 194607 transitions. [2023-12-19 00:16:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-19 00:16:48,151 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-19 00:16:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:48,274 INFO L225 Difference]: With dead ends: 157525 [2023-12-19 00:16:48,274 INFO L226 Difference]: Without dead ends: 104550 [2023-12-19 00:16:48,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1569, Invalid=6803, Unknown=0, NotChecked=0, Total=8372 [2023-12-19 00:16:48,304 INFO L413 NwaCegarLoop]: 1476 mSDtfsCounter, 22774 mSDsluCounter, 13685 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22774 SdHoareTripleChecker+Valid, 15161 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:48,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22774 Valid, 15161 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:16:48,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104550 states. [2023-12-19 00:16:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104550 to 44385. [2023-12-19 00:16:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44385 states, 44383 states have (on average 1.228060293355564) internal successors, (54505), 44384 states have internal predecessors, (54505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44385 states to 44385 states and 54505 transitions. [2023-12-19 00:16:52,580 INFO L78 Accepts]: Start accepts. Automaton has 44385 states and 54505 transitions. Word has length 138 [2023-12-19 00:16:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:52,581 INFO L495 AbstractCegarLoop]: Abstraction has 44385 states and 54505 transitions. [2023-12-19 00:16:52,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.419354838709678) internal successors, (385), 30 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 44385 states and 54505 transitions. [2023-12-19 00:16:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 00:16:52,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:52,585 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 00:16:52,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 00:16:52,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:52,791 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:52,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2060066176, now seen corresponding path program 1 times [2023-12-19 00:16:52,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:52,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584787866] [2023-12-19 00:16:52,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:52,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:53,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584787866] [2023-12-19 00:16:53,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584787866] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:53,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084185115] [2023-12-19 00:16:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:53,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:53,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:53,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:53,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:16:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:53,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:16:53,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:54,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084185115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:55,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:55,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:16:55,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097314658] [2023-12-19 00:16:55,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:16:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:16:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:16:55,955 INFO L87 Difference]: Start difference. First operand 44385 states and 54505 transitions. Second operand has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:01,075 INFO L93 Difference]: Finished difference Result 69087 states and 84758 transitions. [2023-12-19 00:17:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:17:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 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 140 [2023-12-19 00:17:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:01,125 INFO L225 Difference]: With dead ends: 69087 [2023-12-19 00:17:01,125 INFO L226 Difference]: Without dead ends: 44055 [2023-12-19 00:17:01,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=857, Invalid=3049, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:17:01,134 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 15110 mSDsluCounter, 13860 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15110 SdHoareTripleChecker+Valid, 15388 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:01,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15110 Valid, 15388 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:17:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44055 states. [2023-12-19 00:17:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44055 to 36543. [2023-12-19 00:17:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36543 states, 36541 states have (on average 1.2205467830655976) internal successors, (44600), 36542 states have internal predecessors, (44600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36543 states to 36543 states and 44600 transitions. [2023-12-19 00:17:04,509 INFO L78 Accepts]: Start accepts. Automaton has 36543 states and 44600 transitions. Word has length 140 [2023-12-19 00:17:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:04,511 INFO L495 AbstractCegarLoop]: Abstraction has 36543 states and 44600 transitions. [2023-12-19 00:17:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.40625) internal successors, (333), 31 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 36543 states and 44600 transitions. [2023-12-19 00:17:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:17:04,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:04,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:17:04,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:17:04,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 00:17:04,721 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:04,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash 592390141, now seen corresponding path program 1 times [2023-12-19 00:17:04,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:04,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031797518] [2023-12-19 00:17:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:04,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031797518] [2023-12-19 00:17:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031797518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330291672] [2023-12-19 00:17:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:05,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:05,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:17:05,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:17:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:05,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 00:17:05,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:07,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330291672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:10,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-19 00:17:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197062344] [2023-12-19 00:17:10,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:10,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:17:10,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:17:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:17:10,363 INFO L87 Difference]: Start difference. First operand 36543 states and 44600 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:23,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:17:23,314 INFO L93 Difference]: Finished difference Result 64195 states and 77818 transitions. [2023-12-19 00:17:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 00:17:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 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 141 [2023-12-19 00:17:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:17:23,366 INFO L225 Difference]: With dead ends: 64195 [2023-12-19 00:17:23,366 INFO L226 Difference]: Without dead ends: 56155 [2023-12-19 00:17:23,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-19 00:17:23,378 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 16728 mSDsluCounter, 26335 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16728 SdHoareTripleChecker+Valid, 27891 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:17:23,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16728 Valid, 27891 Invalid, 2599 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 00:17:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56155 states. [2023-12-19 00:17:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56155 to 43755. [2023-12-19 00:17:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43755 states, 43753 states have (on average 1.2129453980298495) internal successors, (53070), 43754 states have internal predecessors, (53070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43755 states to 43755 states and 53070 transitions. [2023-12-19 00:17:27,662 INFO L78 Accepts]: Start accepts. Automaton has 43755 states and 53070 transitions. Word has length 141 [2023-12-19 00:17:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:17:27,662 INFO L495 AbstractCegarLoop]: Abstraction has 43755 states and 53070 transitions. [2023-12-19 00:17:27,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:17:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 43755 states and 53070 transitions. [2023-12-19 00:17:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:17:27,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:17:27,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:17:27,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 00:17:27,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 00:17:27,872 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:17:27,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:17:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 120159649, now seen corresponding path program 1 times [2023-12-19 00:17:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:17:27,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483155174] [2023-12-19 00:17:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:27,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:17:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:30,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:17:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483155174] [2023-12-19 00:17:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483155174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:17:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747464279] [2023-12-19 00:17:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:17:30,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:17:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:17:30,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:17:30,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:17:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:17:30,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:17:30,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:17:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:31,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:17:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:17:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747464279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:17:34,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:17:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-19 00:17:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570292403] [2023-12-19 00:17:34,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:17:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-19 00:17:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:17:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-19 00:17:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 00:17:34,193 INFO L87 Difference]: Start difference. First operand 43755 states and 53070 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:18:31,273 INFO L93 Difference]: Finished difference Result 164526 states and 197483 transitions. [2023-12-19 00:18:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2023-12-19 00:18:31,273 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 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 141 [2023-12-19 00:18:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:18:31,393 INFO L225 Difference]: With dead ends: 164526 [2023-12-19 00:18:31,393 INFO L226 Difference]: Without dead ends: 139500 [2023-12-19 00:18:31,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22905 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=7526, Invalid=66186, Unknown=0, NotChecked=0, Total=73712 [2023-12-19 00:18:31,411 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 26210 mSDsluCounter, 51422 mSDsCounter, 0 mSdLazyCounter, 8581 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26210 SdHoareTripleChecker+Valid, 52965 SdHoareTripleChecker+Invalid, 8898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 8581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:18:31,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26210 Valid, 52965 Invalid, 8898 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [317 Valid, 8581 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 00:18:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139500 states. [2023-12-19 00:18:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139500 to 107209. [2023-12-19 00:18:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107209 states, 107207 states have (on average 1.2022069454419955) internal successors, (128885), 107208 states have internal predecessors, (128885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107209 states to 107209 states and 128885 transitions. [2023-12-19 00:18:43,386 INFO L78 Accepts]: Start accepts. Automaton has 107209 states and 128885 transitions. Word has length 141 [2023-12-19 00:18:43,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:18:43,386 INFO L495 AbstractCegarLoop]: Abstraction has 107209 states and 128885 transitions. [2023-12-19 00:18:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:18:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 107209 states and 128885 transitions. [2023-12-19 00:18:43,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:18:43,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:18:43,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:18:43,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:18:43,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:18:43,600 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:18:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:18:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash -372027067, now seen corresponding path program 1 times [2023-12-19 00:18:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:18:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038439862] [2023-12-19 00:18:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:18:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:18:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038439862] [2023-12-19 00:18:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038439862] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:18:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091296605] [2023-12-19 00:18:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:18:44,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:18:44,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:18:44,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:18:44,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:18:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:18:44,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 00:18:44,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:18:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:46,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:18:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:18:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091296605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:18:49,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:18:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-19 00:18:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202455206] [2023-12-19 00:18:49,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:18:49,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:18:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:18:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:18:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:18:49,964 INFO L87 Difference]: Start difference. First operand 107209 states and 128885 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:23:02,178 INFO L93 Difference]: Finished difference Result 426839 states and 505069 transitions. [2023-12-19 00:23:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 738 states. [2023-12-19 00:23:02,178 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 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 141 [2023-12-19 00:23:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:23:02,870 INFO L225 Difference]: With dead ends: 426839 [2023-12-19 00:23:02,871 INFO L226 Difference]: Without dead ends: 370112 [2023-12-19 00:23:03,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283763 ImplicationChecksByTransitivity, 194.5s TimeCoverageRelationStatistics Valid=50715, Invalid=578927, Unknown=0, NotChecked=0, Total=629642 [2023-12-19 00:23:03,041 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 27563 mSDsluCounter, 49888 mSDsCounter, 0 mSdLazyCounter, 9347 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27563 SdHoareTripleChecker+Valid, 51481 SdHoareTripleChecker+Invalid, 9807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 9347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:23:03,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27563 Valid, 51481 Invalid, 9807 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [460 Valid, 9347 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 00:23:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370112 states. [2023-12-19 00:23:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370112 to 178536. [2023-12-19 00:23:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178536 states, 178534 states have (on average 1.1975254013241174) internal successors, (213799), 178535 states have internal predecessors, (213799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178536 states to 178536 states and 213799 transitions. [2023-12-19 00:23:27,413 INFO L78 Accepts]: Start accepts. Automaton has 178536 states and 213799 transitions. Word has length 141 [2023-12-19 00:23:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:23:27,413 INFO L495 AbstractCegarLoop]: Abstraction has 178536 states and 213799 transitions. [2023-12-19 00:23:27,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 178536 states and 213799 transitions. [2023-12-19 00:23:27,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:23:27,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:23:27,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 00:23:27,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 00:23:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 00:23:27,630 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:23:27,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:23:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1231437577, now seen corresponding path program 1 times [2023-12-19 00:23:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:23:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11793882] [2023-12-19 00:23:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:23:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:23:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:23:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:23:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:23:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11793882] [2023-12-19 00:23:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11793882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:23:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681000418] [2023-12-19 00:23:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:23:28,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:23:28,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:23:28,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:23:28,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:23:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:23:28,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 00:23:28,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:23:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:23:29,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:23:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:23:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681000418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:23:31,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:23:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 42 [2023-12-19 00:23:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602095912] [2023-12-19 00:23:31,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:23:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 00:23:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:23:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 00:23:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1583, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:23:31,640 INFO L87 Difference]: Start difference. First operand 178536 states and 213799 transitions. Second operand has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:24:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:24:20,171 INFO L93 Difference]: Finished difference Result 472551 states and 567383 transitions. [2023-12-19 00:24:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-19 00:24:20,172 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 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 141 [2023-12-19 00:24:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:24:20,734 INFO L225 Difference]: With dead ends: 472551 [2023-12-19 00:24:20,734 INFO L226 Difference]: Without dead ends: 329696 [2023-12-19 00:24:20,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9422 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3732, Invalid=26024, Unknown=0, NotChecked=0, Total=29756 [2023-12-19 00:24:20,811 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 17395 mSDsluCounter, 28508 mSDsCounter, 0 mSdLazyCounter, 6574 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17395 SdHoareTripleChecker+Valid, 30138 SdHoareTripleChecker+Invalid, 6668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 6574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:24:20,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17395 Valid, 30138 Invalid, 6668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 6574 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 00:24:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329696 states. [2023-12-19 00:24:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329696 to 159275. [2023-12-19 00:24:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159275 states, 159273 states have (on average 1.1929768385099797) internal successors, (190009), 159274 states have internal predecessors, (190009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:24:44,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159275 states to 159275 states and 190009 transitions. [2023-12-19 00:24:44,032 INFO L78 Accepts]: Start accepts. Automaton has 159275 states and 190009 transitions. Word has length 141 [2023-12-19 00:24:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:24:44,033 INFO L495 AbstractCegarLoop]: Abstraction has 159275 states and 190009 transitions. [2023-12-19 00:24:44,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.380952380952381) internal successors, (394), 42 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:24:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 159275 states and 190009 transitions. [2023-12-19 00:24:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:24:44,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:24:44,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:24:44,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 00:24:44,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:24:44,249 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:24:44,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:24:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1052434950, now seen corresponding path program 1 times [2023-12-19 00:24:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:24:44,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302264662] [2023-12-19 00:24:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:24:44,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:24:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:24:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 31 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:45,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:24:45,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302264662] [2023-12-19 00:24:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302264662] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:24:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858861538] [2023-12-19 00:24:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:24:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:24:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:24:45,838 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:24:45,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:24:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:24:45,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:24:45,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:24:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 35 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:46,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:24:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858861538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:24:48,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:24:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 15, 15] total 54 [2023-12-19 00:24:48,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981662399] [2023-12-19 00:24:48,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:24:48,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-19 00:24:48,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:24:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-19 00:24:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 00:24:48,389 INFO L87 Difference]: Start difference. First operand 159275 states and 190009 transitions. Second operand has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:26:17,764 INFO L93 Difference]: Finished difference Result 368736 states and 437133 transitions. [2023-12-19 00:26:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2023-12-19 00:26:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 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 142 [2023-12-19 00:26:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:26:18,301 INFO L225 Difference]: With dead ends: 368736 [2023-12-19 00:26:18,301 INFO L226 Difference]: Without dead ends: 298064 [2023-12-19 00:26:18,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71140 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=19724, Invalid=155418, Unknown=0, NotChecked=0, Total=175142 [2023-12-19 00:26:18,384 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 25271 mSDsluCounter, 36982 mSDsCounter, 0 mSdLazyCounter, 9984 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25271 SdHoareTripleChecker+Valid, 38711 SdHoareTripleChecker+Invalid, 10230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 9984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:26:18,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25271 Valid, 38711 Invalid, 10230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 9984 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-19 00:26:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298064 states. [2023-12-19 00:26:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298064 to 185220. [2023-12-19 00:26:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185220 states, 185218 states have (on average 1.1883834184582491) internal successors, (220110), 185219 states have internal predecessors, (220110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185220 states to 185220 states and 220110 transitions. [2023-12-19 00:26:46,798 INFO L78 Accepts]: Start accepts. Automaton has 185220 states and 220110 transitions. Word has length 142 [2023-12-19 00:26:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:26:46,799 INFO L495 AbstractCegarLoop]: Abstraction has 185220 states and 220110 transitions. [2023-12-19 00:26:46,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.018518518518518) internal successors, (379), 54 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:26:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 185220 states and 220110 transitions. [2023-12-19 00:26:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 00:26:46,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:26:46,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:26:46,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 00:26:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 00:26:47,011 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:26:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:26:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -624858322, now seen corresponding path program 1 times [2023-12-19 00:26:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:26:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363462171] [2023-12-19 00:26:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:26:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:49,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:26:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363462171] [2023-12-19 00:26:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363462171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:26:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350619779] [2023-12-19 00:26:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:26:49,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:26:49,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:26:49,557 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:26:49,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:26:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:26:49,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 00:26:49,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:26:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:26:54,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 00:26:55,757 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:26:55,762 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:26:55,768 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:26:55,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 00:26:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 00:26:55,970 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-1 context. [2023-12-19 00:26:55,973 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:26:55,978 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:26:55,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:26:55,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:26:55 BoogieIcfgContainer [2023-12-19 00:26:55,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:26:55,998 INFO L158 Benchmark]: Toolchain (without parser) took 818545.14ms. Allocated memory was 232.8MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 178.2MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-19 00:26:56,002 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:26:56,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1216.37ms. Allocated memory is still 232.8MB. Free memory was 177.8MB in the beginning and 153.5MB in the end (delta: 24.3MB). Peak memory consumption was 99.2MB. Max. memory is 8.0GB. [2023-12-19 00:26:56,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 297.76ms. Allocated memory is still 232.8MB. Free memory was 153.5MB in the beginning and 136.6MB in the end (delta: 16.8MB). Peak memory consumption was 110.7MB. Max. memory is 8.0GB. [2023-12-19 00:26:56,005 INFO L158 Benchmark]: Boogie Preprocessor took 451.43ms. Allocated memory was 232.8MB in the beginning and 446.7MB in the end (delta: 213.9MB). Free memory was 136.6MB in the beginning and 299.2MB in the end (delta: -162.5MB). Peak memory consumption was 78.1MB. Max. memory is 8.0GB. [2023-12-19 00:26:56,005 INFO L158 Benchmark]: RCFGBuilder took 3247.49ms. Allocated memory was 446.7MB in the beginning and 712.0MB in the end (delta: 265.3MB). Free memory was 299.2MB in the beginning and 394.1MB in the end (delta: -95.0MB). Peak memory consumption was 175.6MB. Max. memory is 8.0GB. [2023-12-19 00:26:56,005 INFO L158 Benchmark]: TraceAbstraction took 813324.86ms. Allocated memory was 712.0MB in the beginning and 6.1GB in the end (delta: 5.4GB). Free memory was 393.6MB in the beginning and 4.4GB in the end (delta: -4.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-19 00:26:56,006 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 163.6MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1216.37ms. Allocated memory is still 232.8MB. Free memory was 177.8MB in the beginning and 153.5MB in the end (delta: 24.3MB). Peak memory consumption was 99.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 297.76ms. Allocated memory is still 232.8MB. Free memory was 153.5MB in the beginning and 136.6MB in the end (delta: 16.8MB). Peak memory consumption was 110.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 451.43ms. Allocated memory was 232.8MB in the beginning and 446.7MB in the end (delta: 213.9MB). Free memory was 136.6MB in the beginning and 299.2MB in the end (delta: -162.5MB). Peak memory consumption was 78.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3247.49ms. Allocated memory was 446.7MB in the beginning and 712.0MB in the end (delta: 265.3MB). Free memory was 299.2MB in the beginning and 394.1MB in the end (delta: -95.0MB). Peak memory consumption was 175.6MB. Max. memory is 8.0GB. * TraceAbstraction took 813324.86ms. Allocated memory was 712.0MB in the beginning and 6.1GB in the end (delta: 5.4GB). Free memory was 393.6MB in the beginning and 4.4GB in the end (delta: -4.0GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 439]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 439). Cancelled while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-1 context. - TimeoutResultAtElement [Line: 643]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 643). Cancelled while NwaCegarLoop was analyzing trace of length 143 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 813.3s, OverallIterations: 39, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 613.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382235 SdHoareTripleChecker+Valid, 47.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382235 mSDsluCounter, 440628 SdHoareTripleChecker+Invalid, 41.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 382781 mSDsCounter, 3969 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70151 IncrementalHoareTripleChecker+Invalid, 74120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3969 mSolverCounterUnsat, 57847 mSDtfsCounter, 70151 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6165 GetRequests, 3129 SyntacticMatches, 4 SemanticMatches, 3032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448744 ImplicationChecksByTransitivity, 390.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185220occurred in iteration=38, InterpolantAutomatonStates: 2475, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 125.0s AutomataMinimizationTime, 38 MinimizatonAttempts, 826340 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 59.4s InterpolantComputationTime, 4937 NumberOfCodeBlocks, 4937 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 6596 ConstructedInterpolants, 0 QuantifiedInterpolants, 127084 SizeOfPredicates, 135 NumberOfNonLiveVariables, 7753 ConjunctsInSsa, 352 ConjunctsInUnsatCore, 68 InterpolantComputations, 23 PerfectInterpolantSequences, 1194/3230 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown