/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:27:03,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:27:03,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:27:03,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:27:03,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:27:03,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:27:03,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:27:03,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:27:03,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:27:03,704 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:27:03,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:27:03,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:27:03,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:27:03,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:27:03,708 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:27:03,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:27:03,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:27:03,708 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:27:03,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:27:03,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:27:03,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:27:03,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:27:03,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:27:03,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:27:03,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:27:03,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:27:03,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:27:03,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:27:03,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:27:03,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:27:03,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:27:03,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:27:03,713 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:27:03,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:27:03,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:27:03,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:27:03,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:27:03,929 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:27:03,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.09.cil-2.c [2023-12-18 22:27:04,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:27:05,471 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:27:05,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.09.cil-2.c [2023-12-18 22:27:05,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a08bc08/e1ed5dceaeb540f9bc25371d6c67f677/FLAGd55553b7f [2023-12-18 22:27:05,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5a08bc08/e1ed5dceaeb540f9bc25371d6c67f677 [2023-12-18 22:27:05,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:27:05,525 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:27:05,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:27:05,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:27:05,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:27:05,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:27:05" (1/1) ... [2023-12-18 22:27:05,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39386f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:05, skipping insertion in model container [2023-12-18 22:27:05,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:27:05" (1/1) ... [2023-12-18 22:27:05,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:27:06,995 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/Problem05_label46+token_ring.09.cil-2.c[382357,382370] [2023-12-18 22:27:07,019 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/Problem05_label46+token_ring.09.cil-2.c[383339,383352] [2023-12-18 22:27:07,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:27:07,301 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:27:07,901 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/Problem05_label46+token_ring.09.cil-2.c[382357,382370] [2023-12-18 22:27:07,904 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/Problem05_label46+token_ring.09.cil-2.c[383339,383352] [2023-12-18 22:27:07,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:27:07,973 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:27:07,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07 WrapperNode [2023-12-18 22:27:07,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:27:07,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:27:07,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:27:07,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:27:07,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,392 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13059 [2023-12-18 22:27:08,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:27:08,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:27:08,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:27:08,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:27:08,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,518 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]. [2023-12-18 22:27:08,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:27:08,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:27:08,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:27:08,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:27:08,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (1/1) ... [2023-12-18 22:27:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:27:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:27:08,846 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) [2023-12-18 22:27:08,902 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 [2023-12-18 22:27:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:27:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:27:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:27:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:27:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:27:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:27:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:27:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:27:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:27:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:27:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:27:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:27:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:27:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:27:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:27:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:27:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:27:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:27:09,037 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:27:09,039 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:27:14,693 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:27:14,805 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:27:14,806 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-18 22:27:14,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:27:14 BoogieIcfgContainer [2023-12-18 22:27:14,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:27:14,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:27:14,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:27:14,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:27:14,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:27:05" (1/3) ... [2023-12-18 22:27:14,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eea9913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:27:14, skipping insertion in model container [2023-12-18 22:27:14,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:27:07" (2/3) ... [2023-12-18 22:27:14,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eea9913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:27:14, skipping insertion in model container [2023-12-18 22:27:14,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:27:14" (3/3) ... [2023-12-18 22:27:14,811 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.09.cil-2.c [2023-12-18 22:27:14,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:27:14,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:27:14,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:27:14,885 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;@167b2a1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:27:14,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:27:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-18 22:27:14,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:14,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:14,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:14,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:14,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -406394513, now seen corresponding path program 1 times [2023-12-18 22:27:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886339286] [2023-12-18 22:27:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:15,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886339286] [2023-12-18 22:27:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886339286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:15,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:15,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:27:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658192279] [2023-12-18 22:27:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:15,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:27:15,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:27:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:27:15,680 INFO L87 Difference]: Start difference. First operand has 2410 states, 2375 states have (on average 1.8787368421052633) internal successors, (4462), 2380 states have internal predecessors, (4462), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:16,958 INFO L93 Difference]: Finished difference Result 4913 states and 9190 transitions. [2023-12-18 22:27:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:27:16,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:16,977 INFO L225 Difference]: With dead ends: 4913 [2023-12-18 22:27:16,977 INFO L226 Difference]: Without dead ends: 2505 [2023-12-18 22:27:16,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:27:16,991 INFO L413 NwaCegarLoop]: 4211 mSDtfsCounter, 778 mSDsluCounter, 12156 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 16367 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:16,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 16367 Invalid, 891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:27:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-12-18 22:27:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2405. [2023-12-18 22:27:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2372 states have (on average 1.8414839797639122) internal successors, (4368), 2375 states have internal predecessors, (4368), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-18 22:27:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4416 transitions. [2023-12-18 22:27:17,097 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4416 transitions. Word has length 132 [2023-12-18 22:27:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:17,097 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 4416 transitions. [2023-12-18 22:27:17,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4416 transitions. [2023-12-18 22:27:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:17,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:17,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:27:17,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:17,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1268228115, now seen corresponding path program 1 times [2023-12-18 22:27:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757353046] [2023-12-18 22:27:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:17,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757353046] [2023-12-18 22:27:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757353046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:17,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:27:17,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470639419] [2023-12-18 22:27:17,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:17,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:27:17,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:17,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:27:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:27:17,319 INFO L87 Difference]: Start difference. First operand 2405 states and 4416 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:19,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:19,352 INFO L93 Difference]: Finished difference Result 3156 states and 5664 transitions. [2023-12-18 22:27:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:27:19,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:19,362 INFO L225 Difference]: With dead ends: 3156 [2023-12-18 22:27:19,362 INFO L226 Difference]: Without dead ends: 2887 [2023-12-18 22:27:19,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:27:19,365 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 5123 mSDsluCounter, 12615 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5139 SdHoareTripleChecker+Valid, 16836 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:19,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5139 Valid, 16836 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:27:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-12-18 22:27:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2686. [2023-12-18 22:27:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2628 states have (on average 1.8222983257229832) internal successors, (4789), 2632 states have internal predecessors, (4789), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-18 22:27:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4876 transitions. [2023-12-18 22:27:19,426 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4876 transitions. Word has length 132 [2023-12-18 22:27:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:19,426 INFO L495 AbstractCegarLoop]: Abstraction has 2686 states and 4876 transitions. [2023-12-18 22:27:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4876 transitions. [2023-12-18 22:27:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:19,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:19,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:27:19,428 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash -295701143, now seen corresponding path program 1 times [2023-12-18 22:27:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671427999] [2023-12-18 22:27:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671427999] [2023-12-18 22:27:19,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671427999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:19,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:19,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211343800] [2023-12-18 22:27:19,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:19,711 INFO L87 Difference]: Start difference. First operand 2686 states and 4876 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:22,401 INFO L93 Difference]: Finished difference Result 3831 states and 6778 transitions. [2023-12-18 22:27:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:27:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:22,412 INFO L225 Difference]: With dead ends: 3831 [2023-12-18 22:27:22,413 INFO L226 Difference]: Without dead ends: 3281 [2023-12-18 22:27:22,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:27:22,416 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 5154 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 2984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:22,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 21481 Invalid, 2984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 22:27:22,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2023-12-18 22:27:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 2946. [2023-12-18 22:27:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8050995459308419) internal successors, (5168), 2868 states have internal predecessors, (5168), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-18 22:27:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5293 transitions. [2023-12-18 22:27:22,504 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5293 transitions. Word has length 132 [2023-12-18 22:27:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:22,504 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5293 transitions. [2023-12-18 22:27:22,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5293 transitions. [2023-12-18 22:27:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:22,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:22,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:22,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:27:22,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:22,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:22,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1431443819, now seen corresponding path program 1 times [2023-12-18 22:27:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293351831] [2023-12-18 22:27:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293351831] [2023-12-18 22:27:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293351831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283674310] [2023-12-18 22:27:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:22,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:22,710 INFO L87 Difference]: Start difference. First operand 2946 states and 5293 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:24,011 INFO L93 Difference]: Finished difference Result 4101 states and 7223 transitions. [2023-12-18 22:27:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:27:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:24,025 INFO L225 Difference]: With dead ends: 4101 [2023-12-18 22:27:24,025 INFO L226 Difference]: Without dead ends: 3291 [2023-12-18 22:27:24,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:27:24,031 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4818 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4835 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:24,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4835 Valid, 20647 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 22:27:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2023-12-18 22:27:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2946. [2023-12-18 22:27:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8040516940272442) internal successors, (5165), 2868 states have internal predecessors, (5165), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-18 22:27:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5290 transitions. [2023-12-18 22:27:24,103 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5290 transitions. Word has length 132 [2023-12-18 22:27:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:24,103 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5290 transitions. [2023-12-18 22:27:24,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5290 transitions. [2023-12-18 22:27:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:24,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:24,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:27:24,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:24,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash -215919123, now seen corresponding path program 1 times [2023-12-18 22:27:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912198771] [2023-12-18 22:27:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:24,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912198771] [2023-12-18 22:27:24,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912198771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:24,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:24,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411784199] [2023-12-18 22:27:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:24,332 INFO L87 Difference]: Start difference. First operand 2946 states and 5290 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:25,541 INFO L93 Difference]: Finished difference Result 4097 states and 7206 transitions. [2023-12-18 22:27:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:27:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:25,555 INFO L225 Difference]: With dead ends: 4097 [2023-12-18 22:27:25,555 INFO L226 Difference]: Without dead ends: 3287 [2023-12-18 22:27:25,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:27:25,563 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4936 mSDsluCounter, 12382 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 16551 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:25,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4953 Valid, 16551 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:27:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2023-12-18 22:27:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2946. [2023-12-18 22:27:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8030038421236465) internal successors, (5162), 2868 states have internal predecessors, (5162), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-18 22:27:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5287 transitions. [2023-12-18 22:27:25,653 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5287 transitions. Word has length 132 [2023-12-18 22:27:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:25,653 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5287 transitions. [2023-12-18 22:27:25,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5287 transitions. [2023-12-18 22:27:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:25,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:25,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:25,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:27:25,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:25,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1947697451, now seen corresponding path program 1 times [2023-12-18 22:27:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:25,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053308061] [2023-12-18 22:27:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053308061] [2023-12-18 22:27:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053308061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998876971] [2023-12-18 22:27:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:25,858 INFO L87 Difference]: Start difference. First operand 2946 states and 5287 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:27,253 INFO L93 Difference]: Finished difference Result 4093 states and 7189 transitions. [2023-12-18 22:27:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:27:27,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:27,265 INFO L225 Difference]: With dead ends: 4093 [2023-12-18 22:27:27,265 INFO L226 Difference]: Without dead ends: 3283 [2023-12-18 22:27:27,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:27:27,269 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4814 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:27,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4831 Valid, 20647 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:27:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2023-12-18 22:27:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2946. [2023-12-18 22:27:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2863 states have (on average 1.8019559902200488) internal successors, (5159), 2868 states have internal predecessors, (5159), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-18 22:27:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 5284 transitions. [2023-12-18 22:27:27,363 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 5284 transitions. Word has length 132 [2023-12-18 22:27:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:27,363 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 5284 transitions. [2023-12-18 22:27:27,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 5284 transitions. [2023-12-18 22:27:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:27,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:27,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:27:27,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash 909112877, now seen corresponding path program 1 times [2023-12-18 22:27:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984339189] [2023-12-18 22:27:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984339189] [2023-12-18 22:27:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984339189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311234343] [2023-12-18 22:27:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:27,601 INFO L87 Difference]: Start difference. First operand 2946 states and 5284 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:29,883 INFO L93 Difference]: Finished difference Result 4807 states and 8335 transitions. [2023-12-18 22:27:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:27:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:29,910 INFO L225 Difference]: With dead ends: 4807 [2023-12-18 22:27:29,911 INFO L226 Difference]: Without dead ends: 3997 [2023-12-18 22:27:29,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:27:29,917 INFO L413 NwaCegarLoop]: 4191 mSDtfsCounter, 5207 mSDsluCounter, 16694 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 2455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:29,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 20885 Invalid, 2455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:27:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2023-12-18 22:27:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3479. [2023-12-18 22:27:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3346 states have (on average 1.7722653915122535) internal successors, (5930), 3353 states have internal predecessors, (5930), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-18 22:27:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 6135 transitions. [2023-12-18 22:27:30,003 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 6135 transitions. Word has length 132 [2023-12-18 22:27:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:30,004 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 6135 transitions. [2023-12-18 22:27:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 6135 transitions. [2023-12-18 22:27:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:30,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:30,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:30,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:27:30,006 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:30,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:30,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1064052501, now seen corresponding path program 1 times [2023-12-18 22:27:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875540071] [2023-12-18 22:27:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:30,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875540071] [2023-12-18 22:27:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875540071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:30,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:30,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531357547] [2023-12-18 22:27:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:30,169 INFO L87 Difference]: Start difference. First operand 3479 states and 6135 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:31,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:31,355 INFO L93 Difference]: Finished difference Result 5325 states and 9172 transitions. [2023-12-18 22:27:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:27:31,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:31,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:31,376 INFO L225 Difference]: With dead ends: 5325 [2023-12-18 22:27:31,376 INFO L226 Difference]: Without dead ends: 3982 [2023-12-18 22:27:31,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:27:31,382 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4813 mSDsluCounter, 16478 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 20647 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:31,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 20647 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 22:27:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2023-12-18 22:27:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3479. [2023-12-18 22:27:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3346 states have (on average 1.7707710699342498) internal successors, (5925), 3353 states have internal predecessors, (5925), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-18 22:27:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 6130 transitions. [2023-12-18 22:27:31,528 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 6130 transitions. Word has length 132 [2023-12-18 22:27:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:31,528 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 6130 transitions. [2023-12-18 22:27:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 6130 transitions. [2023-12-18 22:27:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:31,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:31,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:31,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:27:31,530 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:31,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1089054317, now seen corresponding path program 1 times [2023-12-18 22:27:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:31,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608494390] [2023-12-18 22:27:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:31,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:31,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608494390] [2023-12-18 22:27:31,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608494390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:31,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:31,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91784796] [2023-12-18 22:27:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:31,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:31,683 INFO L87 Difference]: Start difference. First operand 3479 states and 6130 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:34,144 INFO L93 Difference]: Finished difference Result 6706 states and 11378 transitions. [2023-12-18 22:27:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:27:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:34,159 INFO L225 Difference]: With dead ends: 6706 [2023-12-18 22:27:34,159 INFO L226 Difference]: Without dead ends: 5363 [2023-12-18 22:27:34,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:27:34,165 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 5119 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5135 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:34,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5135 Valid, 21479 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:27:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2023-12-18 22:27:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 4545. [2023-12-18 22:27:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 4312 states have (on average 1.7293599257884973) internal successors, (7457), 4323 states have internal predecessors, (7457), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-18 22:27:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 7828 transitions. [2023-12-18 22:27:34,272 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 7828 transitions. Word has length 132 [2023-12-18 22:27:34,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:34,272 INFO L495 AbstractCegarLoop]: Abstraction has 4545 states and 7828 transitions. [2023-12-18 22:27:34,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:34,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 7828 transitions. [2023-12-18 22:27:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:34,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:34,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:27:34,275 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:34,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash 465772715, now seen corresponding path program 1 times [2023-12-18 22:27:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337476503] [2023-12-18 22:27:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:34,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337476503] [2023-12-18 22:27:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337476503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436215760] [2023-12-18 22:27:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:34,428 INFO L87 Difference]: Start difference. First operand 4545 states and 7828 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:36,938 INFO L93 Difference]: Finished difference Result 10510 states and 17518 transitions. [2023-12-18 22:27:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:27:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:36,963 INFO L225 Difference]: With dead ends: 10510 [2023-12-18 22:27:36,963 INFO L226 Difference]: Without dead ends: 8101 [2023-12-18 22:27:36,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:27:36,974 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 5124 mSDsluCounter, 17129 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:36,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 21479 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:27:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2023-12-18 22:27:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 6682. [2023-12-18 22:27:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 6249 states have (on average 1.6845895343254922) internal successors, (10527), 6268 states have internal predecessors, (10527), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-18 22:27:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 11248 transitions. [2023-12-18 22:27:37,219 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 11248 transitions. Word has length 132 [2023-12-18 22:27:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:37,219 INFO L495 AbstractCegarLoop]: Abstraction has 6682 states and 11248 transitions. [2023-12-18 22:27:37,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 11248 transitions. [2023-12-18 22:27:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:37,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:37,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:37,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:27:37,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:37,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash 584214189, now seen corresponding path program 1 times [2023-12-18 22:27:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111200734] [2023-12-18 22:27:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:37,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:37,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:37,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111200734] [2023-12-18 22:27:37,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111200734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:37,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:37,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056427157] [2023-12-18 22:27:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:37,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:37,395 INFO L87 Difference]: Start difference. First operand 6682 states and 11248 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:40,324 INFO L93 Difference]: Finished difference Result 19779 states and 32558 transitions. [2023-12-18 22:27:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:27:40,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:40,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:40,362 INFO L225 Difference]: With dead ends: 19779 [2023-12-18 22:27:40,363 INFO L226 Difference]: Without dead ends: 15233 [2023-12-18 22:27:40,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:27:40,378 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 5192 mSDsluCounter, 17121 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 21468 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:40,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 21468 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3244 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-18 22:27:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15233 states. [2023-12-18 22:27:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15233 to 10796. [2023-12-18 22:27:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10796 states, 9979 states have (on average 1.645355246016635) internal successors, (16419), 10014 states have internal predecessors, (16419), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2023-12-18 22:27:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10796 states to 10796 states and 17862 transitions. [2023-12-18 22:27:40,694 INFO L78 Accepts]: Start accepts. Automaton has 10796 states and 17862 transitions. Word has length 132 [2023-12-18 22:27:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:40,694 INFO L495 AbstractCegarLoop]: Abstraction has 10796 states and 17862 transitions. [2023-12-18 22:27:40,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10796 states and 17862 transitions. [2023-12-18 22:27:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:40,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:40,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:40,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:27:40,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:40,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:40,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1449179857, now seen corresponding path program 1 times [2023-12-18 22:27:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670290889] [2023-12-18 22:27:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:40,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:40,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670290889] [2023-12-18 22:27:40,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670290889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:40,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:40,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:40,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967042203] [2023-12-18 22:27:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:40,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:40,830 INFO L87 Difference]: Start difference. First operand 10796 states and 17862 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:43,746 INFO L93 Difference]: Finished difference Result 35747 states and 58550 transitions. [2023-12-18 22:27:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:27:43,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:43,832 INFO L225 Difference]: With dead ends: 35747 [2023-12-18 22:27:43,832 INFO L226 Difference]: Without dead ends: 27087 [2023-12-18 22:27:43,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:27:43,866 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5377 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5403 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5403 Valid, 21472 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:27:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27087 states. [2023-12-18 22:27:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27087 to 19181. [2023-12-18 22:27:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19181 states, 17612 states have (on average 1.6191801044742222) internal successors, (28517), 17679 states have internal predecessors, (28517), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2023-12-18 22:27:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19181 states to 19181 states and 31534 transitions. [2023-12-18 22:27:44,616 INFO L78 Accepts]: Start accepts. Automaton has 19181 states and 31534 transitions. Word has length 132 [2023-12-18 22:27:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:44,616 INFO L495 AbstractCegarLoop]: Abstraction has 19181 states and 31534 transitions. [2023-12-18 22:27:44,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 19181 states and 31534 transitions. [2023-12-18 22:27:44,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:44,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:44,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:44,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:27:44,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:44,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash 979078765, now seen corresponding path program 1 times [2023-12-18 22:27:44,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521662061] [2023-12-18 22:27:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521662061] [2023-12-18 22:27:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521662061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398347162] [2023-12-18 22:27:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:44,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:44,784 INFO L87 Difference]: Start difference. First operand 19181 states and 31534 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:48,158 INFO L93 Difference]: Finished difference Result 67650 states and 111180 transitions. [2023-12-18 22:27:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:27:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:48,327 INFO L225 Difference]: With dead ends: 67650 [2023-12-18 22:27:48,327 INFO L226 Difference]: Without dead ends: 50605 [2023-12-18 22:27:48,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:27:48,369 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5341 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5367 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:48,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5367 Valid, 21472 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2710 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:27:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50605 states. [2023-12-18 22:27:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50605 to 35950. [2023-12-18 22:27:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35950 states, 32909 states have (on average 1.6036646510073231) internal successors, (52775), 33040 states have internal predecessors, (52775), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2023-12-18 22:27:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35950 states to 35950 states and 59362 transitions. [2023-12-18 22:27:49,889 INFO L78 Accepts]: Start accepts. Automaton has 35950 states and 59362 transitions. Word has length 132 [2023-12-18 22:27:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:49,890 INFO L495 AbstractCegarLoop]: Abstraction has 35950 states and 59362 transitions. [2023-12-18 22:27:49,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 35950 states and 59362 transitions. [2023-12-18 22:27:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:49,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:49,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:49,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:27:49,910 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:49,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash -328063633, now seen corresponding path program 1 times [2023-12-18 22:27:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286323651] [2023-12-18 22:27:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:50,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:50,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286323651] [2023-12-18 22:27:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286323651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106942707] [2023-12-18 22:27:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:50,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:50,066 INFO L87 Difference]: Start difference. First operand 35950 states and 59362 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:27:54,709 INFO L93 Difference]: Finished difference Result 130497 states and 216722 transitions. [2023-12-18 22:27:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:27:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:27:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:27:55,021 INFO L225 Difference]: With dead ends: 130497 [2023-12-18 22:27:55,021 INFO L226 Difference]: Without dead ends: 96683 [2023-12-18 22:27:55,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:27:55,117 INFO L413 NwaCegarLoop]: 4193 mSDtfsCounter, 5227 mSDsluCounter, 16692 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 20885 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:27:55,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5242 Valid, 20885 Invalid, 2750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-18 22:27:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96683 states. [2023-12-18 22:27:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96683 to 69487. [2023-12-18 22:27:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69487 states, 63566 states have (on average 1.5954598370197905) internal successors, (101417), 63825 states have internal predecessors, (101417), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2023-12-18 22:27:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69487 states to 69487 states and 116474 transitions. [2023-12-18 22:27:58,256 INFO L78 Accepts]: Start accepts. Automaton has 69487 states and 116474 transitions. Word has length 132 [2023-12-18 22:27:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:27:58,257 INFO L495 AbstractCegarLoop]: Abstraction has 69487 states and 116474 transitions. [2023-12-18 22:27:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:27:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 69487 states and 116474 transitions. [2023-12-18 22:27:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:27:58,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:27:58,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:27:58,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:27:58,302 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:27:58,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:27:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1569433133, now seen corresponding path program 1 times [2023-12-18 22:27:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:27:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024003721] [2023-12-18 22:27:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:27:58,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:27:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:27:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:27:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:27:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:27:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:27:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:27:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:27:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:27:58,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024003721] [2023-12-18 22:27:58,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024003721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:27:58,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:27:58,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:27:58,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327262055] [2023-12-18 22:27:58,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:27:58,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:27:58,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:27:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:27:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:27:58,474 INFO L87 Difference]: Start difference. First operand 69487 states and 116474 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:05,240 INFO L93 Difference]: Finished difference Result 254272 states and 430312 transitions. [2023-12-18 22:28:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:28:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:28:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:05,902 INFO L225 Difference]: With dead ends: 254272 [2023-12-18 22:28:05,902 INFO L226 Difference]: Without dead ends: 186921 [2023-12-18 22:28:06,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:28:06,057 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5269 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5295 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:06,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5295 Valid, 21472 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 22:28:06,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186921 states. [2023-12-18 22:28:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186921 to 136560. [2023-12-18 22:28:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136560 states, 125007 states have (on average 1.5915508731511034) internal successors, (198955), 125522 states have internal predecessors, (198955), 7961 states have call successors, (7961), 3079 states have call predecessors, (7961), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2023-12-18 22:28:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136560 states to 136560 states and 235070 transitions. [2023-12-18 22:28:12,298 INFO L78 Accepts]: Start accepts. Automaton has 136560 states and 235070 transitions. Word has length 132 [2023-12-18 22:28:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:12,299 INFO L495 AbstractCegarLoop]: Abstraction has 136560 states and 235070 transitions. [2023-12-18 22:28:12,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 136560 states and 235070 transitions. [2023-12-18 22:28:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:28:12,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:12,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:12,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:28:12,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:12,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1694493265, now seen corresponding path program 1 times [2023-12-18 22:28:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:12,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454082351] [2023-12-18 22:28:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:12,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:28:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:28:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:28:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:28:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:12,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454082351] [2023-12-18 22:28:12,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454082351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:12,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:12,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:12,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725739475] [2023-12-18 22:28:12,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:12,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:12,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:12,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:12,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:12,545 INFO L87 Difference]: Start difference. First operand 136560 states and 235070 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:28:23,879 INFO L93 Difference]: Finished difference Result 497983 states and 868334 transitions. [2023-12-18 22:28:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:28:23,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-18 22:28:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:28:25,427 INFO L225 Difference]: With dead ends: 497983 [2023-12-18 22:28:25,427 INFO L226 Difference]: Without dead ends: 363559 [2023-12-18 22:28:25,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:28:25,831 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 5143 mSDsluCounter, 17124 mSDsCounter, 0 mSdLazyCounter, 2950 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 21472 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:28:25,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5158 Valid, 21472 Invalid, 3013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2950 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 22:28:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363559 states. [2023-12-18 22:28:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363559 to 270705. [2023-12-18 22:28:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270705 states, 248144 states have (on average 1.589967921851828) internal successors, (394541), 249171 states have internal predecessors, (394541), 15385 states have call successors, (15385), 6151 states have call predecessors, (15385), 7174 states have return successors, (75456), 16406 states have call predecessors, (75456), 15383 states have call successors, (75456) [2023-12-18 22:28:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270705 states to 270705 states and 485382 transitions. [2023-12-18 22:28:38,992 INFO L78 Accepts]: Start accepts. Automaton has 270705 states and 485382 transitions. Word has length 132 [2023-12-18 22:28:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:28:38,992 INFO L495 AbstractCegarLoop]: Abstraction has 270705 states and 485382 transitions. [2023-12-18 22:28:38,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:28:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 270705 states and 485382 transitions. [2023-12-18 22:28:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-18 22:28:39,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:28:39,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:28:39,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 22:28:39,122 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:28:39,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:28:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 694070765, now seen corresponding path program 1 times [2023-12-18 22:28:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:28:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024104502] [2023-12-18 22:28:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:28:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:28:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:28:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-18 22:28:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-18 22:28:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-18 22:28:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-18 22:28:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:28:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:28:39,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:28:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024104502] [2023-12-18 22:28:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024104502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:28:39,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:28:39,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:28:39,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723020236] [2023-12-18 22:28:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:28:39,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:28:39,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:28:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:28:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:28:39,505 INFO L87 Difference]: Start difference. First operand 270705 states and 485382 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)