/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:42:24,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:42:24,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:42:24,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:42:24,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:42:24,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:42:24,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:42:24,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:42:24,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:42:24,441 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:42:24,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:42:24,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:42:24,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:42:24,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:42:24,443 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:42:24,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:42:24,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:42:24,443 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:42:24,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:42:24,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:42:24,445 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:42:24,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:42:24,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:42:24,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:42:24,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:42:24,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:42:24,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:42:24,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:42:24,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:42:24,447 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:42:24,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:42:24,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:42:24,448 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:42:24,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:42:24,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:42:24,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:42:24,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:42:24,660 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:42:24,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:42:25,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:42:26,098 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:42:26,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:42:26,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda40d303/b7da32d83b3040c19b7ec73c29c25e0b/FLAGd5aefb9aa [2023-12-20 14:42:26,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda40d303/b7da32d83b3040c19b7ec73c29c25e0b [2023-12-20 14:42:26,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:42:26,145 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:42:26,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:42:26,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:42:26,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:42:26,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:42:26" (1/1) ... [2023-12-20 14:42:26,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297a6104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:26, skipping insertion in model container [2023-12-20 14:42:26,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:42:26" (1/1) ... [2023-12-20 14:42:26,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:42:26,602 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26962,26975] [2023-12-20 14:42:26,647 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33898,33911] [2023-12-20 14:42:27,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:42:27,210 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:42:27,253 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[26962,26975] [2023-12-20 14:42:27,263 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.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[33898,33911] [2023-12-20 14:42:27,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:42:27,593 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:42:27,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27 WrapperNode [2023-12-20 14:42:27,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:42:27,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:42:27,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:42:27,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:42:27,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:27,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:27,847 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2023-12-20 14:42:27,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:42:27,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:42:27,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:42:27,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:42:27,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:27,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,124 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:42:28,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:42:28,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:42:28,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:42:28,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:42:28,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (1/1) ... [2023-12-20 14:42:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:42:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:42:28,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:42:28,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:42:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:42:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:42:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:42:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:42:28,668 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:42:28,670 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:42:31,700 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:42:31,746 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:42:31,746 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:42:31,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:42:31 BoogieIcfgContainer [2023-12-20 14:42:31,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:42:31,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:42:31,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:42:31,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:42:31,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:42:26" (1/3) ... [2023-12-20 14:42:31,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5509f42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:42:31, skipping insertion in model container [2023-12-20 14:42:31,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:42:27" (2/3) ... [2023-12-20 14:42:31,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5509f42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:42:31, skipping insertion in model container [2023-12-20 14:42:31,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:42:31" (3/3) ... [2023-12-20 14:42:31,752 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-20 14:42:31,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:42:31,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:42:31,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:42:31,811 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;@5002bc8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:42:31,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:42:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-20 14:42:31,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:31,825 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] [2023-12-20 14:42:31,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:31,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash -31988621, now seen corresponding path program 1 times [2023-12-20 14:42:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:31,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243930539] [2023-12-20 14:42:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243930539] [2023-12-20 14:42:32,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243930539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:42:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214909748] [2023-12-20 14:42:32,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:42:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:42:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:42:32,066 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:32,180 INFO L93 Difference]: Finished difference Result 1698 states and 3335 transitions. [2023-12-20 14:42:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:42:32,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-20 14:42:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:32,199 INFO L225 Difference]: With dead ends: 1698 [2023-12-20 14:42:32,199 INFO L226 Difference]: Without dead ends: 878 [2023-12-20 14:42:32,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:42:32,209 INFO L413 NwaCegarLoop]: 1660 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, 1660 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:32,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1660 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-20 14:42:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-20 14:42:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-12-20 14:42:32,270 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 27 [2023-12-20 14:42:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:32,270 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-12-20 14:42:32,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-12-20 14:42:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-20 14:42:32,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:32,272 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] [2023-12-20 14:42:32,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:42:32,272 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:32,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1837426955, now seen corresponding path program 1 times [2023-12-20 14:42:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322047858] [2023-12-20 14:42:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:32,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322047858] [2023-12-20 14:42:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322047858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:32,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:32,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:42:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794849282] [2023-12-20 14:42:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:32,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:42:32,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:42:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:42:32,461 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:32,553 INFO L93 Difference]: Finished difference Result 940 states and 1760 transitions. [2023-12-20 14:42:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:42:32,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-20 14:42:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:32,558 INFO L225 Difference]: With dead ends: 940 [2023-12-20 14:42:32,558 INFO L226 Difference]: Without dead ends: 878 [2023-12-20 14:42:32,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:42:32,559 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:32,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:42:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-20 14:42:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-20 14:42:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.82648401826484) internal successors, (1600), 877 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1600 transitions. [2023-12-20 14:42:32,587 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1600 transitions. Word has length 27 [2023-12-20 14:42:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:32,588 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1600 transitions. [2023-12-20 14:42:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1600 transitions. [2023-12-20 14:42:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:42:32,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:32,593 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] [2023-12-20 14:42:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:42:32,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:32,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 992919510, now seen corresponding path program 1 times [2023-12-20 14:42:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:32,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609775445] [2023-12-20 14:42:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:32,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609775445] [2023-12-20 14:42:32,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609775445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:32,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503462794] [2023-12-20 14:42:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:42:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:42:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:42:32,784 INFO L87 Difference]: Start difference. First operand 878 states and 1600 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:37,867 INFO L93 Difference]: Finished difference Result 3133 states and 5909 transitions. [2023-12-20 14:42:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:42:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-20 14:42:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:37,875 INFO L225 Difference]: With dead ends: 3133 [2023-12-20 14:42:37,875 INFO L226 Difference]: Without dead ends: 2380 [2023-12-20 14:42:37,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:42:37,879 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 2516 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:37,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 851 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 14:42:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-12-20 14:42:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2023-12-20 14:42:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5618166526492852) internal successors, (3714), 2379 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3714 transitions. [2023-12-20 14:42:37,981 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3714 transitions. Word has length 59 [2023-12-20 14:42:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:37,986 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 3714 transitions. [2023-12-20 14:42:37,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3714 transitions. [2023-12-20 14:42:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 14:42:37,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:37,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:42:37,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:37,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash -470628699, now seen corresponding path program 1 times [2023-12-20 14:42:37,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:37,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488398126] [2023-12-20 14:42:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:37,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:38,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:38,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488398126] [2023-12-20 14:42:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488398126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:38,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:38,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:42:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976180305] [2023-12-20 14:42:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:38,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:42:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:42:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:42:38,288 INFO L87 Difference]: Start difference. First operand 2380 states and 3714 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:38,712 INFO L93 Difference]: Finished difference Result 3324 states and 5250 transitions. [2023-12-20 14:42:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:42:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 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 [2023-12-20 14:42:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:38,721 INFO L225 Difference]: With dead ends: 3324 [2023-12-20 14:42:38,721 INFO L226 Difference]: Without dead ends: 3265 [2023-12-20 14:42:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-20 14:42:38,723 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 13341 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:38,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13341 Valid, 6272 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:42:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2023-12-20 14:42:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2437. [2023-12-20 14:42:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2435 states have (on average 1.5634496919917864) internal successors, (3807), 2436 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3807 transitions. [2023-12-20 14:42:38,764 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3807 transitions. Word has length 87 [2023-12-20 14:42:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:38,765 INFO L495 AbstractCegarLoop]: Abstraction has 2437 states and 3807 transitions. [2023-12-20 14:42:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3807 transitions. [2023-12-20 14:42:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:42:38,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:38,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:38,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:42:38,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:38,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1442819851, now seen corresponding path program 1 times [2023-12-20 14:42:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:38,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116385633] [2023-12-20 14:42:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:38,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116385633] [2023-12-20 14:42:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116385633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:38,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796629593] [2023-12-20 14:42:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:38,848 INFO L87 Difference]: Start difference. First operand 2437 states and 3807 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:38,879 INFO L93 Difference]: Finished difference Result 2658 states and 4166 transitions. [2023-12-20 14:42:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:38,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-20 14:42:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:38,885 INFO L225 Difference]: With dead ends: 2658 [2023-12-20 14:42:38,885 INFO L226 Difference]: Without dead ends: 2542 [2023-12-20 14:42:38,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:38,887 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:38,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-12-20 14:42:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-12-20 14:42:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.5654058313632782) internal successors, (3973), 2539 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3973 transitions. [2023-12-20 14:42:38,924 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3973 transitions. Word has length 89 [2023-12-20 14:42:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:38,924 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3973 transitions. [2023-12-20 14:42:38,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3973 transitions. [2023-12-20 14:42:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:42:38,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:38,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:38,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:42:38,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:38,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1440674899, now seen corresponding path program 1 times [2023-12-20 14:42:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218279949] [2023-12-20 14:42:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:39,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218279949] [2023-12-20 14:42:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218279949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:39,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:39,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:42:39,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544437887] [2023-12-20 14:42:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:42:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:39,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:42:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:42:39,261 INFO L87 Difference]: Start difference. First operand 2540 states and 3973 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:39,599 INFO L93 Difference]: Finished difference Result 2761 states and 4329 transitions. [2023-12-20 14:42:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:42:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-20 14:42:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:39,614 INFO L225 Difference]: With dead ends: 2761 [2023-12-20 14:42:39,615 INFO L226 Difference]: Without dead ends: 2542 [2023-12-20 14:42:39,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:42:39,619 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 6100 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6100 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6100 Valid, 2234 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:42:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-12-20 14:42:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-12-20 14:42:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.5646178092986605) internal successors, (3971), 2539 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3971 transitions. [2023-12-20 14:42:39,659 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3971 transitions. Word has length 89 [2023-12-20 14:42:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3971 transitions. [2023-12-20 14:42:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3971 transitions. [2023-12-20 14:42:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 14:42:39,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:39,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:42:39,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:39,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1840151110, now seen corresponding path program 1 times [2023-12-20 14:42:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405932769] [2023-12-20 14:42:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405932769] [2023-12-20 14:42:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405932769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:42:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590479099] [2023-12-20 14:42:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:39,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:42:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:42:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:42:39,867 INFO L87 Difference]: Start difference. First operand 2540 states and 3971 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:39,898 INFO L93 Difference]: Finished difference Result 2548 states and 3980 transitions. [2023-12-20 14:42:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:42:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 [2023-12-20 14:42:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:39,905 INFO L225 Difference]: With dead ends: 2548 [2023-12-20 14:42:39,905 INFO L226 Difference]: Without dead ends: 2546 [2023-12-20 14:42:39,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:42:39,907 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 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 [2023-12-20 14:42:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-12-20 14:42:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2544. [2023-12-20 14:42:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2542 states have (on average 1.5633359559402045) internal successors, (3974), 2543 states have internal predecessors, (3974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3974 transitions. [2023-12-20 14:42:39,985 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3974 transitions. Word has length 90 [2023-12-20 14:42:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 3974 transitions. [2023-12-20 14:42:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3974 transitions. [2023-12-20 14:42:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:39,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:39,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:42:39,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:39,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1591939181, now seen corresponding path program 1 times [2023-12-20 14:42:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692954433] [2023-12-20 14:42:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:40,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:40,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692954433] [2023-12-20 14:42:40,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692954433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:40,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:40,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:40,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822885924] [2023-12-20 14:42:40,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:40,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:40,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,052 INFO L87 Difference]: Start difference. First operand 2544 states and 3974 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:40,078 INFO L93 Difference]: Finished difference Result 2778 states and 4347 transitions. [2023-12-20 14:42:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:40,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:40,085 INFO L225 Difference]: With dead ends: 2778 [2023-12-20 14:42:40,085 INFO L226 Difference]: Without dead ends: 2658 [2023-12-20 14:42:40,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,087 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:40,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2023-12-20 14:42:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2656. [2023-12-20 14:42:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2654 states have (on average 1.5640542577241898) internal successors, (4151), 2655 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4151 transitions. [2023-12-20 14:42:40,133 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4151 transitions. Word has length 91 [2023-12-20 14:42:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:40,134 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 4151 transitions. [2023-12-20 14:42:40,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4151 transitions. [2023-12-20 14:42:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:40,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:40,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:40,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:42:40,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:40,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1666551661, now seen corresponding path program 1 times [2023-12-20 14:42:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203946794] [2023-12-20 14:42:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203946794] [2023-12-20 14:42:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203946794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:40,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408120735] [2023-12-20 14:42:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,198 INFO L87 Difference]: Start difference. First operand 2656 states and 4151 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:40,229 INFO L93 Difference]: Finished difference Result 3298 states and 5171 transitions. [2023-12-20 14:42:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:40,239 INFO L225 Difference]: With dead ends: 3298 [2023-12-20 14:42:40,239 INFO L226 Difference]: Without dead ends: 2965 [2023-12-20 14:42:40,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,241 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:40,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2023-12-20 14:42:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2023-12-20 14:42:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2961 states have (on average 1.5646740965889903) internal successors, (4633), 2962 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4633 transitions. [2023-12-20 14:42:40,298 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4633 transitions. Word has length 91 [2023-12-20 14:42:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:40,299 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4633 transitions. [2023-12-20 14:42:40,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4633 transitions. [2023-12-20 14:42:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:40,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:40,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:40,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:42:40,300 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:40,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2011549037, now seen corresponding path program 1 times [2023-12-20 14:42:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:40,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803349890] [2023-12-20 14:42:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:40,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803349890] [2023-12-20 14:42:40,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803349890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:40,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:40,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:40,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487478496] [2023-12-20 14:42:40,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:40,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:40,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,356 INFO L87 Difference]: Start difference. First operand 2963 states and 4633 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:40,394 INFO L93 Difference]: Finished difference Result 4195 states and 6575 transitions. [2023-12-20 14:42:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:40,403 INFO L225 Difference]: With dead ends: 4195 [2023-12-20 14:42:40,403 INFO L226 Difference]: Without dead ends: 3555 [2023-12-20 14:42:40,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,405 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:40,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2023-12-20 14:42:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3553. [2023-12-20 14:42:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3551 states have (on average 1.5626584060827935) internal successors, (5549), 3552 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5549 transitions. [2023-12-20 14:42:40,466 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5549 transitions. Word has length 91 [2023-12-20 14:42:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 5549 transitions. [2023-12-20 14:42:40,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5549 transitions. [2023-12-20 14:42:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:40,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:40,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:42:40,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:40,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1742965869, now seen corresponding path program 1 times [2023-12-20 14:42:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:40,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457780720] [2023-12-20 14:42:40,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457780720] [2023-12-20 14:42:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457780720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:40,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:40,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64152324] [2023-12-20 14:42:40,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:40,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:40,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:40,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:40,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,561 INFO L87 Difference]: Start difference. First operand 3553 states and 5549 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:40,616 INFO L93 Difference]: Finished difference Result 5917 states and 9239 transitions. [2023-12-20 14:42:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:40,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:40,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:40,636 INFO L225 Difference]: With dead ends: 5917 [2023-12-20 14:42:40,637 INFO L226 Difference]: Without dead ends: 4687 [2023-12-20 14:42:40,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,641 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:40,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2023-12-20 14:42:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4685. [2023-12-20 14:42:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4683 states have (on average 1.5556267349989323) internal successors, (7285), 4684 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7285 transitions. [2023-12-20 14:42:40,757 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7285 transitions. Word has length 91 [2023-12-20 14:42:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:40,758 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7285 transitions. [2023-12-20 14:42:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7285 transitions. [2023-12-20 14:42:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:40,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:40,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:42:40,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:40,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1782909805, now seen corresponding path program 1 times [2023-12-20 14:42:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702853739] [2023-12-20 14:42:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:40,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702853739] [2023-12-20 14:42:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702853739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:40,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229570689] [2023-12-20 14:42:40,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:40,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,820 INFO L87 Difference]: Start difference. First operand 4685 states and 7285 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:40,902 INFO L93 Difference]: Finished difference Result 9217 states and 14279 transitions. [2023-12-20 14:42:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:40,915 INFO L225 Difference]: With dead ends: 9217 [2023-12-20 14:42:40,915 INFO L226 Difference]: Without dead ends: 6855 [2023-12-20 14:42:40,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:40,920 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:40,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2023-12-20 14:42:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6853. [2023-12-20 14:42:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 6851 states have (on average 1.5421106407823675) internal successors, (10565), 6852 states have internal predecessors, (10565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 10565 transitions. [2023-12-20 14:42:41,075 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 10565 transitions. Word has length 91 [2023-12-20 14:42:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:41,075 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 10565 transitions. [2023-12-20 14:42:41,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 10565 transitions. [2023-12-20 14:42:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:41,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:41,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:42:41,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:41,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1157253741, now seen corresponding path program 1 times [2023-12-20 14:42:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:41,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947074843] [2023-12-20 14:42:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:41,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:41,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:41,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947074843] [2023-12-20 14:42:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947074843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877396699] [2023-12-20 14:42:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:41,147 INFO L87 Difference]: Start difference. First operand 6853 states and 10565 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:41,316 INFO L93 Difference]: Finished difference Result 15529 states and 23783 transitions. [2023-12-20 14:42:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:41,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:41,333 INFO L225 Difference]: With dead ends: 15529 [2023-12-20 14:42:41,334 INFO L226 Difference]: Without dead ends: 10999 [2023-12-20 14:42:41,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:41,341 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:41,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2023-12-20 14:42:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10997. [2023-12-20 14:42:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10997 states, 10995 states have (on average 1.5226011823556163) internal successors, (16741), 10996 states have internal predecessors, (16741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10997 states to 10997 states and 16741 transitions. [2023-12-20 14:42:41,603 INFO L78 Accepts]: Start accepts. Automaton has 10997 states and 16741 transitions. Word has length 91 [2023-12-20 14:42:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:41,603 INFO L495 AbstractCegarLoop]: Abstraction has 10997 states and 16741 transitions. [2023-12-20 14:42:41,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 10997 states and 16741 transitions. [2023-12-20 14:42:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:41,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:41,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:41,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:42:41,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:41,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2045987181, now seen corresponding path program 1 times [2023-12-20 14:42:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081697651] [2023-12-20 14:42:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081697651] [2023-12-20 14:42:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081697651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055960676] [2023-12-20 14:42:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:41,672 INFO L87 Difference]: Start difference. First operand 10997 states and 16741 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:41,935 INFO L93 Difference]: Finished difference Result 27577 states and 41639 transitions. [2023-12-20 14:42:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:41,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:41,970 INFO L225 Difference]: With dead ends: 27577 [2023-12-20 14:42:41,970 INFO L226 Difference]: Without dead ends: 18903 [2023-12-20 14:42:41,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:41,986 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:41,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2023-12-20 14:42:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18901. [2023-12-20 14:42:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18901 states, 18899 states have (on average 1.4987565479655007) internal successors, (28325), 18900 states have internal predecessors, (28325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18901 states to 18901 states and 28325 transitions. [2023-12-20 14:42:42,513 INFO L78 Accepts]: Start accepts. Automaton has 18901 states and 28325 transitions. Word has length 91 [2023-12-20 14:42:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:42,513 INFO L495 AbstractCegarLoop]: Abstraction has 18901 states and 28325 transitions. [2023-12-20 14:42:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18901 states and 28325 transitions. [2023-12-20 14:42:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:42:42,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:42,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:42:42,514 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:42,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1873031571, now seen corresponding path program 1 times [2023-12-20 14:42:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172008041] [2023-12-20 14:42:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:42:42,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172008041] [2023-12-20 14:42:42,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172008041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:42,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:42,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:42:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922138495] [2023-12-20 14:42:42,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:42,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:42:42,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:42:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:42,580 INFO L87 Difference]: Start difference. First operand 18901 states and 28325 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:43,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:43,230 INFO L93 Difference]: Finished difference Result 50521 states and 75047 transitions. [2023-12-20 14:42:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:42:43,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:42:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:43,281 INFO L225 Difference]: With dead ends: 50521 [2023-12-20 14:42:43,282 INFO L226 Difference]: Without dead ends: 33943 [2023-12-20 14:42:43,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:42:43,299 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:43,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:42:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33943 states. [2023-12-20 14:42:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33943 to 33941. [2023-12-20 14:42:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33941 states, 33939 states have (on average 1.471964406729721) internal successors, (49957), 33940 states have internal predecessors, (49957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33941 states to 33941 states and 49957 transitions. [2023-12-20 14:42:44,228 INFO L78 Accepts]: Start accepts. Automaton has 33941 states and 49957 transitions. Word has length 91 [2023-12-20 14:42:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:44,229 INFO L495 AbstractCegarLoop]: Abstraction has 33941 states and 49957 transitions. [2023-12-20 14:42:44,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33941 states and 49957 transitions. [2023-12-20 14:42:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:42:44,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:44,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:42:44,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:44,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1900714775, now seen corresponding path program 1 times [2023-12-20 14:42:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951068027] [2023-12-20 14:42:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:42:44,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:44,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951068027] [2023-12-20 14:42:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951068027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:44,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:44,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:42:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891845990] [2023-12-20 14:42:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:44,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:42:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:42:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:42:44,515 INFO L87 Difference]: Start difference. First operand 33941 states and 49957 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:48,609 INFO L93 Difference]: Finished difference Result 283559 states and 415662 transitions. [2023-12-20 14:42:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:42:48,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:42:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:49,343 INFO L225 Difference]: With dead ends: 283559 [2023-12-20 14:42:49,343 INFO L226 Difference]: Without dead ends: 261541 [2023-12-20 14:42:49,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:42:49,567 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 11680 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:42:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5189 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:42:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261541 states. [2023-12-20 14:42:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261541 to 60821. [2023-12-20 14:42:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60821 states, 60819 states have (on average 1.4633091632549038) internal successors, (88997), 60820 states have internal predecessors, (88997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60821 states to 60821 states and 88997 transitions. [2023-12-20 14:42:52,989 INFO L78 Accepts]: Start accepts. Automaton has 60821 states and 88997 transitions. Word has length 115 [2023-12-20 14:42:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:42:52,990 INFO L495 AbstractCegarLoop]: Abstraction has 60821 states and 88997 transitions. [2023-12-20 14:42:52,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 60821 states and 88997 transitions. [2023-12-20 14:42:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:42:52,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:42:52,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:42:52,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:42:52,998 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:42:52,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:42:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1975327255, now seen corresponding path program 1 times [2023-12-20 14:42:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:42:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164022487] [2023-12-20 14:42:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:42:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:42:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:42:53,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:42:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:42:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164022487] [2023-12-20 14:42:53,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164022487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:42:53,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:42:53,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:42:53,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699939164] [2023-12-20 14:42:53,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:42:53,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:42:53,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:42:53,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:42:53,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:42:53,238 INFO L87 Difference]: Start difference. First operand 60821 states and 88997 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:42:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:42:59,186 INFO L93 Difference]: Finished difference Result 315175 states and 461742 transitions. [2023-12-20 14:42:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:42:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:42:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:42:59,785 INFO L225 Difference]: With dead ends: 315175 [2023-12-20 14:42:59,785 INFO L226 Difference]: Without dead ends: 283557 [2023-12-20 14:43:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:43:00,049 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11680 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:43:00,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5181 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:43:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283557 states. [2023-12-20 14:43:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283557 to 103445. [2023-12-20 14:43:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103445 states, 103443 states have (on average 1.458010691878619) internal successors, (150821), 103444 states have internal predecessors, (150821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103445 states to 103445 states and 150821 transitions. [2023-12-20 14:43:04,843 INFO L78 Accepts]: Start accepts. Automaton has 103445 states and 150821 transitions. Word has length 115 [2023-12-20 14:43:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:43:04,843 INFO L495 AbstractCegarLoop]: Abstraction has 103445 states and 150821 transitions. [2023-12-20 14:43:04,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 103445 states and 150821 transitions. [2023-12-20 14:43:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:43:04,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:43:04,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:43:04,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:43:04,852 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:43:04,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:43:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1974642665, now seen corresponding path program 1 times [2023-12-20 14:43:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:43:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232379352] [2023-12-20 14:43:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:43:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:43:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:43:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:43:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:43:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232379352] [2023-12-20 14:43:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232379352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:43:05,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:43:05,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:43:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970423116] [2023-12-20 14:43:05,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:43:05,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:43:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:43:05,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:43:05,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:43:05,085 INFO L87 Difference]: Start difference. First operand 103445 states and 150821 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:43:12,502 INFO L93 Difference]: Finished difference Result 346791 states and 507694 transitions. [2023-12-20 14:43:12,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:43:12,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:43:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:43:13,089 INFO L225 Difference]: With dead ends: 346791 [2023-12-20 14:43:13,089 INFO L226 Difference]: Without dead ends: 315173 [2023-12-20 14:43:13,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:43:13,198 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 11722 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11722 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:43:13,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11722 Valid, 5175 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:43:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315173 states. [2023-12-20 14:43:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315173 to 135061. [2023-12-20 14:43:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135061 states, 135059 states have (on average 1.456941040582264) internal successors, (196773), 135060 states have internal predecessors, (196773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135061 states to 135061 states and 196773 transitions. [2023-12-20 14:43:19,206 INFO L78 Accepts]: Start accepts. Automaton has 135061 states and 196773 transitions. Word has length 115 [2023-12-20 14:43:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:43:19,207 INFO L495 AbstractCegarLoop]: Abstraction has 135061 states and 196773 transitions. [2023-12-20 14:43:19,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 135061 states and 196773 transitions. [2023-12-20 14:43:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:43:19,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:43:19,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:43:19,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:43:19,242 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:43:19,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:43:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2051741463, now seen corresponding path program 1 times [2023-12-20 14:43:19,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:43:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71266756] [2023-12-20 14:43:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:43:19,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:43:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:43:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:43:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:43:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71266756] [2023-12-20 14:43:19,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71266756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:43:19,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:43:19,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:43:19,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243294136] [2023-12-20 14:43:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:43:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:43:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:43:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:43:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:43:19,431 INFO L87 Difference]: Start difference. First operand 135061 states and 196773 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:43:28,883 INFO L93 Difference]: Finished difference Result 378407 states and 553646 transitions. [2023-12-20 14:43:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:43:28,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:43:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:43:29,938 INFO L225 Difference]: With dead ends: 378407 [2023-12-20 14:43:29,938 INFO L226 Difference]: Without dead ends: 346789 [2023-12-20 14:43:30,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:43:30,068 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 11776 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11776 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:43:30,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11776 Valid, 5054 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:43:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346789 states. [2023-12-20 14:43:37,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346789 to 166677. [2023-12-20 14:43:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166677 states, 166675 states have (on average 1.456277186140693) internal successors, (242725), 166676 states have internal predecessors, (242725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166677 states to 166677 states and 242725 transitions. [2023-12-20 14:43:37,718 INFO L78 Accepts]: Start accepts. Automaton has 166677 states and 242725 transitions. Word has length 115 [2023-12-20 14:43:37,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:43:37,718 INFO L495 AbstractCegarLoop]: Abstraction has 166677 states and 242725 transitions. [2023-12-20 14:43:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 166677 states and 242725 transitions. [2023-12-20 14:43:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:43:37,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:43:37,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:43:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:43:37,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:43:37,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:43:37,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2091685399, now seen corresponding path program 1 times [2023-12-20 14:43:37,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:43:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207668479] [2023-12-20 14:43:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:43:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:43:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:43:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:43:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:43:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207668479] [2023-12-20 14:43:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207668479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:43:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:43:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:43:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782334108] [2023-12-20 14:43:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:43:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:43:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:43:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:43:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:43:37,890 INFO L87 Difference]: Start difference. First operand 166677 states and 242725 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:43:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:43:50,003 INFO L93 Difference]: Finished difference Result 410023 states and 599598 transitions. [2023-12-20 14:43:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:43:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:43:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:43:50,977 INFO L225 Difference]: With dead ends: 410023 [2023-12-20 14:43:50,977 INFO L226 Difference]: Without dead ends: 378405 [2023-12-20 14:43:51,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:43:51,141 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 11831 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11831 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:43:51,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11831 Valid, 5021 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:43:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378405 states. [2023-12-20 14:43:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378405 to 198293. [2023-12-20 14:43:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198293 states, 198291 states have (on average 1.4558250248372342) internal successors, (288677), 198292 states have internal predecessors, (288677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:44:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198293 states to 198293 states and 288677 transitions. [2023-12-20 14:44:00,437 INFO L78 Accepts]: Start accepts. Automaton has 198293 states and 288677 transitions. Word has length 115 [2023-12-20 14:44:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:00,437 INFO L495 AbstractCegarLoop]: Abstraction has 198293 states and 288677 transitions. [2023-12-20 14:44:00,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:44:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 198293 states and 288677 transitions. [2023-12-20 14:44:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 14:44:00,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:00,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:44:00,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:44:00,472 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:00,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1466029335, now seen corresponding path program 1 times [2023-12-20 14:44:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:00,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124395652] [2023-12-20 14:44:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:44:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124395652] [2023-12-20 14:44:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124395652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:44:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970071093] [2023-12-20 14:44:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:44:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:44:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:44:01,043 INFO L87 Difference]: Start difference. First operand 198293 states and 288677 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:44:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:13,224 INFO L93 Difference]: Finished difference Result 441639 states and 645550 transitions. [2023-12-20 14:44:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:44:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-20 14:44:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:14,341 INFO L225 Difference]: With dead ends: 441639 [2023-12-20 14:44:14,342 INFO L226 Difference]: Without dead ends: 410021 [2023-12-20 14:44:14,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:44:14,431 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11895 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11895 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:14,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11895 Valid, 5063 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:44:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410021 states.