/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 20:33:23,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 20:33:23,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 20:33:23,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 20:33:23,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 20:33:23,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 20:33:23,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 20:33:23,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 20:33:23,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 20:33:23,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 20:33:23,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 20:33:23,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 20:33:23,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 20:33:23,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 20:33:23,216 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 20:33:23,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 20:33:23,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 20:33:23,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 20:33:23,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 20:33:23,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 20:33:23,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 20:33:23,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 20:33:23,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 20:33:23,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 20:33:23,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 20:33:23,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 20:33:23,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 20:33:23,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 20:33:23,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 20:33:23,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 20:33:23,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 20:33:23,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 20:33:23,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 20:33:23,424 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 20:33:23,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c [2023-12-25 20:33:24,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 20:33:24,898 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 20:33:24,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c [2023-12-25 20:33:24,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5f55468/27f6cad6bbe046e284c0cfc8d989d4bd/FLAGf841f6e79 [2023-12-25 20:33:24,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5f55468/27f6cad6bbe046e284c0cfc8d989d4bd [2023-12-25 20:33:24,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 20:33:24,961 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 20:33:24,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 20:33:24,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 20:33:24,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 20:33:24,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:33:24" (1/1) ... [2023-12-25 20:33:24,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d8cda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:24, skipping insertion in model container [2023-12-25 20:33:24,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:33:24" (1/1) ... [2023-12-25 20:33:25,128 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 20:33:25,403 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c[1180,1193] [2023-12-25 20:33:26,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 20:33:26,679 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 20:33:26,691 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c[1180,1193] [2023-12-25 20:33:27,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 20:33:27,528 INFO L206 MainTranslator]: Completed translation [2023-12-25 20:33:27,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27 WrapperNode [2023-12-25 20:33:27,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 20:33:27,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 20:33:27,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 20:33:27,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 20:33:27,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:27,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:31,869 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55698 [2023-12-25 20:33:31,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 20:33:31,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 20:33:31,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 20:33:31,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 20:33:31,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:31,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:33,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:33,690 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]. [2023-12-25 20:33:33,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:33,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:34,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:34,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:35,154 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:35,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:36,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 20:33:36,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 20:33:36,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 20:33:36,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 20:33:36,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (1/1) ... [2023-12-25 20:33:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 20:33:36,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:33:36,403 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) [2023-12-25 20:33:36,405 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 [2023-12-25 20:33:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 20:33:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 20:33:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 20:33:36,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 20:33:38,651 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 20:33:38,652 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 20:33:57,229 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 20:33:58,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 20:33:58,005 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 20:33:58,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:33:58 BoogieIcfgContainer [2023-12-25 20:33:58,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 20:33:58,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 20:33:58,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 20:33:58,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 20:33:58,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:33:24" (1/3) ... [2023-12-25 20:33:58,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d123a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:33:58, skipping insertion in model container [2023-12-25 20:33:58,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:33:27" (2/3) ... [2023-12-25 20:33:58,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d123a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:33:58, skipping insertion in model container [2023-12-25 20:33:58,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:33:58" (3/3) ... [2023-12-25 20:33:58,014 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.2.prop1-back-serstep.c [2023-12-25 20:33:58,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 20:33:58,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 20:33:58,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 20:33:58,166 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;@5013e34e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 20:33:58,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 20:33:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 12052 states, 12050 states have (on average 1.6668879668049792) internal successors, (20086), 12051 states have internal predecessors, (20086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:33:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2023-12-25 20:33:58,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:33:58,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:33:58,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:33:58,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:33:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash 513727700, now seen corresponding path program 1 times [2023-12-25 20:33:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:33:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212345079] [2023-12-25 20:33:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:33:58,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:33:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:34:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212345079] [2023-12-25 20:34:02,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212345079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:34:02,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:34:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:34:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208057494] [2023-12-25 20:34:02,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:02,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:34:02,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:34:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:02,904 INFO L87 Difference]: Start difference. First operand has 12052 states, 12050 states have (on average 1.6668879668049792) internal successors, (20086), 12051 states have internal predecessors, (20086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:34:03,347 INFO L93 Difference]: Finished difference Result 23581 states and 39303 transitions. [2023-12-25 20:34:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:34:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1254 [2023-12-25 20:34:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:34:03,410 INFO L225 Difference]: With dead ends: 23581 [2023-12-25 20:34:03,410 INFO L226 Difference]: Without dead ends: 12052 [2023-12-25 20:34:03,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:03,437 INFO L413 NwaCegarLoop]: 20079 mSDtfsCounter, 1 mSDsluCounter, 40153 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60232 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:34:03,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60232 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:34:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12052 states. [2023-12-25 20:34:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12052 to 12052. [2023-12-25 20:34:03,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12052 states, 12051 states have (on average 1.6665836860011618) internal successors, (20084), 12051 states have internal predecessors, (20084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12052 states to 12052 states and 20084 transitions. [2023-12-25 20:34:03,800 INFO L78 Accepts]: Start accepts. Automaton has 12052 states and 20084 transitions. Word has length 1254 [2023-12-25 20:34:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:34:03,804 INFO L495 AbstractCegarLoop]: Abstraction has 12052 states and 20084 transitions. [2023-12-25 20:34:03,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 12052 states and 20084 transitions. [2023-12-25 20:34:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2023-12-25 20:34:03,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:34:03,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:34:03,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 20:34:03,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:34:03,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:34:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1252578036, now seen corresponding path program 1 times [2023-12-25 20:34:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:34:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592038223] [2023-12-25 20:34:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:34:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:34:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592038223] [2023-12-25 20:34:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592038223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:34:06,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:34:06,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:34:06,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293161041] [2023-12-25 20:34:06,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:06,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:34:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:34:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:06,005 INFO L87 Difference]: Start difference. First operand 12052 states and 20084 transitions. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:34:06,333 INFO L93 Difference]: Finished difference Result 23584 states and 39301 transitions. [2023-12-25 20:34:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:34:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1255 [2023-12-25 20:34:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:34:06,379 INFO L225 Difference]: With dead ends: 23584 [2023-12-25 20:34:06,379 INFO L226 Difference]: Without dead ends: 12055 [2023-12-25 20:34:06,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:06,396 INFO L413 NwaCegarLoop]: 20079 mSDtfsCounter, 1 mSDsluCounter, 40151 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60230 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:34:06,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60230 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:34:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12055 states. [2023-12-25 20:34:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12055 to 12054. [2023-12-25 20:34:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 12053 states have (on average 1.6664730772421803) internal successors, (20086), 12053 states have internal predecessors, (20086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 20086 transitions. [2023-12-25 20:34:06,624 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 20086 transitions. Word has length 1255 [2023-12-25 20:34:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:34:06,625 INFO L495 AbstractCegarLoop]: Abstraction has 12054 states and 20086 transitions. [2023-12-25 20:34:06,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 20086 transitions. [2023-12-25 20:34:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2023-12-25 20:34:06,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:34:06,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:34:06,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 20:34:06,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:34:06,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:34:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -385638418, now seen corresponding path program 1 times [2023-12-25 20:34:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:34:06,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110055990] [2023-12-25 20:34:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:06,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:34:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:34:08,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:08,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110055990] [2023-12-25 20:34:08,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110055990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:34:08,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:34:08,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:34:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102738187] [2023-12-25 20:34:08,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:34:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:34:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 20:34:08,918 INFO L87 Difference]: Start difference. First operand 12054 states and 20086 transitions. Second operand has 5 states, 5 states have (on average 251.2) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:34:09,585 INFO L93 Difference]: Finished difference Result 36456 states and 60751 transitions. [2023-12-25 20:34:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:34:09,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 251.2) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1256 [2023-12-25 20:34:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:34:09,623 INFO L225 Difference]: With dead ends: 36456 [2023-12-25 20:34:09,624 INFO L226 Difference]: Without dead ends: 24925 [2023-12-25 20:34:09,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 20:34:09,638 INFO L413 NwaCegarLoop]: 22323 mSDtfsCounter, 78689 mSDsluCounter, 40152 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78689 SdHoareTripleChecker+Valid, 62475 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:34:09,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78689 Valid, 62475 Invalid, 16 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:34:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24925 states. [2023-12-25 20:34:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24925 to 13403. [2023-12-25 20:34:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13403 states, 13402 states have (on average 1.666393075660349) internal successors, (22333), 13402 states have internal predecessors, (22333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13403 states to 13403 states and 22333 transitions. [2023-12-25 20:34:09,869 INFO L78 Accepts]: Start accepts. Automaton has 13403 states and 22333 transitions. Word has length 1256 [2023-12-25 20:34:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:34:09,870 INFO L495 AbstractCegarLoop]: Abstraction has 13403 states and 22333 transitions. [2023-12-25 20:34:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 251.2) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:09,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13403 states and 22333 transitions. [2023-12-25 20:34:10,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8928 [2023-12-25 20:34:10,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:34:10,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:34:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 20:34:10,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:34:10,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:34:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1173782582, now seen corresponding path program 1 times [2023-12-25 20:34:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:34:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399291154] [2023-12-25 20:34:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:34:11,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:34:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752902323] [2023-12-25 20:34:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:11,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:34:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:34:11,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:34:11,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 20:34:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:22,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 44664 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:34:22,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:34:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 904 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:34:22,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:34:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399291154] [2023-12-25 20:34:22,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:34:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752902323] [2023-12-25 20:34:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752902323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:34:22,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:34:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:34:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797116184] [2023-12-25 20:34:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:22,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:34:22,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:34:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:22,836 INFO L87 Difference]: Start difference. First operand 13403 states and 22333 transitions. Second operand has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:34:23,110 INFO L93 Difference]: Finished difference Result 24944 states and 41564 transitions. [2023-12-25 20:34:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:34:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8927 [2023-12-25 20:34:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:34:23,131 INFO L225 Difference]: With dead ends: 24944 [2023-12-25 20:34:23,131 INFO L226 Difference]: Without dead ends: 13413 [2023-12-25 20:34:23,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8926 GetRequests, 8924 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:23,149 INFO L413 NwaCegarLoop]: 20079 mSDtfsCounter, 12 mSDsluCounter, 40148 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60227 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:34:23,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60227 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:34:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2023-12-25 20:34:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 13405. [2023-12-25 20:34:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13405 states, 13404 states have (on average 1.6662936436884512) internal successors, (22335), 13404 states have internal predecessors, (22335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 22335 transitions. [2023-12-25 20:34:23,471 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 22335 transitions. Word has length 8927 [2023-12-25 20:34:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:34:23,473 INFO L495 AbstractCegarLoop]: Abstraction has 13405 states and 22335 transitions. [2023-12-25 20:34:23,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 22335 transitions. [2023-12-25 20:34:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8928 [2023-12-25 20:34:23,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:34:23,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:34:24,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-25 20:34:24,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:34:24,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:34:24,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:34:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1451468924, now seen corresponding path program 1 times [2023-12-25 20:34:24,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:34:24,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841970280] [2023-12-25 20:34:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:34:24,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:34:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610362668] [2023-12-25 20:34:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:24,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:34:24,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:34:24,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:34:24,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 20:34:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:35,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 44665 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 20:34:36,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:34:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 904 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 20:34:36,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 20:34:36,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:36,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841970280] [2023-12-25 20:34:36,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:34:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610362668] [2023-12-25 20:34:36,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610362668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 20:34:36,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 20:34:36,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 20:34:36,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280751756] [2023-12-25 20:34:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 20:34:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:36,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 20:34:36,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:36,287 INFO L87 Difference]: Start difference. First operand 13405 states and 22335 transitions. Second operand has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:34:36,501 INFO L93 Difference]: Finished difference Result 24947 states and 41566 transitions. [2023-12-25 20:34:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 20:34:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8927 [2023-12-25 20:34:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:34:36,529 INFO L225 Difference]: With dead ends: 24947 [2023-12-25 20:34:36,530 INFO L226 Difference]: Without dead ends: 13414 [2023-12-25 20:34:36,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8926 GetRequests, 8924 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 20:34:36,542 INFO L413 NwaCegarLoop]: 20079 mSDtfsCounter, 12 mSDsluCounter, 40148 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60227 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:34:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60227 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 20:34:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13414 states. [2023-12-25 20:34:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13414 to 13406. [2023-12-25 20:34:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 13405 states have (on average 1.6662439388287953) internal successors, (22336), 13405 states have internal predecessors, (22336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 22336 transitions. [2023-12-25 20:34:36,697 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 22336 transitions. Word has length 8927 [2023-12-25 20:34:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:34:36,707 INFO L495 AbstractCegarLoop]: Abstraction has 13406 states and 22336 transitions. [2023-12-25 20:34:36,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2231.75) internal successors, (8927), 4 states have internal predecessors, (8927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:34:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 22336 transitions. [2023-12-25 20:34:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8928 [2023-12-25 20:34:37,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:34:37,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:34:37,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 20:34:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:34:37,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:34:37,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:34:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1255258578, now seen corresponding path program 1 times [2023-12-25 20:34:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:34:37,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671711697] [2023-12-25 20:34:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:34:38,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:34:38,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328321744] [2023-12-25 20:34:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:34:38,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:34:38,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:34:38,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:34:38,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 20:34:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:34:49,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 44666 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 20:34:50,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:34:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 6 proven. 671 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-12-25 20:34:51,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:34:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2023-12-25 20:34:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:34:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671711697] [2023-12-25 20:34:51,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:34:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328321744] [2023-12-25 20:34:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328321744] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:34:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:34:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-12-25 20:34:51,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260851744] [2023-12-25 20:34:51,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:34:51,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 20:34:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:34:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 20:34:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-25 20:34:51,610 INFO L87 Difference]: Start difference. First operand 13406 states and 22336 transitions. Second operand has 6 states, 6 states have (on average 1338.3333333333333) internal successors, (8030), 6 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:35:14,708 INFO L93 Difference]: Finished difference Result 58324 states and 96778 transitions. [2023-12-25 20:35:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 20:35:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1338.3333333333333) internal successors, (8030), 6 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8927 [2023-12-25 20:35:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:35:14,755 INFO L225 Difference]: With dead ends: 58324 [2023-12-25 20:35:14,755 INFO L226 Difference]: Without dead ends: 36467 [2023-12-25 20:35:14,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17854 GetRequests, 17842 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 20:35:14,772 INFO L413 NwaCegarLoop]: 31879 mSDtfsCounter, 85164 mSDsluCounter, 77012 mSDsCounter, 0 mSdLazyCounter, 35796 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85164 SdHoareTripleChecker+Valid, 108891 SdHoareTripleChecker+Invalid, 37005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 35796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:35:14,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85164 Valid, 108891 Invalid, 37005 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1209 Valid, 35796 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-12-25 20:35:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36467 states. [2023-12-25 20:35:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36467 to 13406. [2023-12-25 20:35:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13406 states, 13405 states have (on average 1.6662439388287953) internal successors, (22336), 13405 states have internal predecessors, (22336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13406 states to 13406 states and 22336 transitions. [2023-12-25 20:35:15,093 INFO L78 Accepts]: Start accepts. Automaton has 13406 states and 22336 transitions. Word has length 8927 [2023-12-25 20:35:15,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:35:15,105 INFO L495 AbstractCegarLoop]: Abstraction has 13406 states and 22336 transitions. [2023-12-25 20:35:15,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1338.3333333333333) internal successors, (8030), 6 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13406 states and 22336 transitions. [2023-12-25 20:35:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8929 [2023-12-25 20:35:15,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:35:15,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:35:15,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-25 20:35:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:35:15,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:35:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:35:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1858224526, now seen corresponding path program 1 times [2023-12-25 20:35:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:35:15,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385941019] [2023-12-25 20:35:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:35:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:35:16,487 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:35:16,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154140462] [2023-12-25 20:35:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:35:16,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:35:16,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:35:16,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:35:16,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 20:35:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:35:27,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 44669 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:35:27,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:35:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 8 proven. 671 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-25 20:35:28,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:35:29,097 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-12-25 20:35:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:35:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385941019] [2023-12-25 20:35:29,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:35:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154140462] [2023-12-25 20:35:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154140462] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:35:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:35:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:35:29,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635759988] [2023-12-25 20:35:29,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:35:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:35:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:35:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:35:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:35:29,112 INFO L87 Difference]: Start difference. First operand 13406 states and 22336 transitions. Second operand has 5 states, 5 states have (on average 1606.6) internal successors, (8033), 5 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:35:41,866 INFO L93 Difference]: Finished difference Result 46797 states and 77569 transitions. [2023-12-25 20:35:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:35:41,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1606.6) internal successors, (8033), 5 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8928 [2023-12-25 20:35:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:35:41,903 INFO L225 Difference]: With dead ends: 46797 [2023-12-25 20:35:41,903 INFO L226 Difference]: Without dead ends: 24935 [2023-12-25 20:35:41,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17855 GetRequests, 17846 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:35:41,915 INFO L413 NwaCegarLoop]: 31869 mSDtfsCounter, 50362 mSDsluCounter, 31635 mSDsCounter, 0 mSdLazyCounter, 16808 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50362 SdHoareTripleChecker+Valid, 63504 SdHoareTripleChecker+Invalid, 18014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 16808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-12-25 20:35:41,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50362 Valid, 63504 Invalid, 18014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 16808 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-12-25 20:35:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24935 states. [2023-12-25 20:35:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24935 to 13408. [2023-12-25 20:35:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13408 states, 13407 states have (on average 1.6661445513537705) internal successors, (22338), 13407 states have internal predecessors, (22338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13408 states to 13408 states and 22338 transitions. [2023-12-25 20:35:42,087 INFO L78 Accepts]: Start accepts. Automaton has 13408 states and 22338 transitions. Word has length 8928 [2023-12-25 20:35:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:35:42,092 INFO L495 AbstractCegarLoop]: Abstraction has 13408 states and 22338 transitions. [2023-12-25 20:35:42,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1606.6) internal successors, (8033), 5 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:35:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13408 states and 22338 transitions. [2023-12-25 20:35:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8930 [2023-12-25 20:35:42,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:35:42,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:35:42,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 20:35:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:35:42,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:35:42,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:35:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1599570194, now seen corresponding path program 1 times [2023-12-25 20:35:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:35:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980396686] [2023-12-25 20:35:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:35:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:35:43,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:35:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795298535] [2023-12-25 20:35:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:35:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:35:43,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:35:43,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:35:43,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 20:35:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:35:54,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 44673 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:35:54,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:35:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 10 proven. 671 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-12-25 20:35:55,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:35:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2023-12-25 20:35:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:35:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980396686] [2023-12-25 20:35:56,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:35:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795298535] [2023-12-25 20:35:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795298535] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:35:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:35:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:35:56,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174568189] [2023-12-25 20:35:56,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:35:56,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:35:56,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:35:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:35:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:35:56,114 INFO L87 Difference]: Start difference. First operand 13408 states and 22338 transitions. Second operand has 5 states, 5 states have (on average 1607.2) internal successors, (8036), 5 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:36:07,461 INFO L93 Difference]: Finished difference Result 46805 states and 77577 transitions. [2023-12-25 20:36:07,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:36:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1607.2) internal successors, (8036), 5 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8929 [2023-12-25 20:36:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:36:07,524 INFO L225 Difference]: With dead ends: 46805 [2023-12-25 20:36:07,524 INFO L226 Difference]: Without dead ends: 24936 [2023-12-25 20:36:07,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17857 GetRequests, 17848 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:36:07,563 INFO L413 NwaCegarLoop]: 31861 mSDtfsCounter, 50353 mSDsluCounter, 31630 mSDsCounter, 0 mSdLazyCounter, 16808 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50353 SdHoareTripleChecker+Valid, 63491 SdHoareTripleChecker+Invalid, 18014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 16808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-25 20:36:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50353 Valid, 63491 Invalid, 18014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 16808 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-25 20:36:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2023-12-25 20:36:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 13410. [2023-12-25 20:36:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13410 states, 13409 states have (on average 1.6660451935267357) internal successors, (22340), 13409 states have internal predecessors, (22340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 22340 transitions. [2023-12-25 20:36:07,902 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 22340 transitions. Word has length 8929 [2023-12-25 20:36:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:36:07,915 INFO L495 AbstractCegarLoop]: Abstraction has 13410 states and 22340 transitions. [2023-12-25 20:36:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1607.2) internal successors, (8036), 5 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 22340 transitions. [2023-12-25 20:36:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8931 [2023-12-25 20:36:08,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:36:08,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:36:08,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-25 20:36:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:36:08,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:36:08,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:36:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -667116682, now seen corresponding path program 1 times [2023-12-25 20:36:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:36:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10500832] [2023-12-25 20:36:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:36:08,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:36:09,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:36:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195449284] [2023-12-25 20:36:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:36:09,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:36:09,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:36:09,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:36:09,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 20:36:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:36:20,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 44676 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:36:20,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:36:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 12 proven. 671 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-25 20:36:21,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:36:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2023-12-25 20:36:21,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:36:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10500832] [2023-12-25 20:36:21,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:36:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195449284] [2023-12-25 20:36:21,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195449284] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:36:21,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:36:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:36:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955949343] [2023-12-25 20:36:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:36:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:36:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:36:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:36:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:36:21,877 INFO L87 Difference]: Start difference. First operand 13410 states and 22340 transitions. Second operand has 5 states, 5 states have (on average 1607.8) internal successors, (8039), 5 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:36:34,467 INFO L93 Difference]: Finished difference Result 46813 states and 77585 transitions. [2023-12-25 20:36:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:36:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1607.8) internal successors, (8039), 5 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8930 [2023-12-25 20:36:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:36:34,498 INFO L225 Difference]: With dead ends: 46813 [2023-12-25 20:36:34,498 INFO L226 Difference]: Without dead ends: 24937 [2023-12-25 20:36:34,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17859 GetRequests, 17850 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:36:34,512 INFO L413 NwaCegarLoop]: 31853 mSDtfsCounter, 34773 mSDsluCounter, 45990 mSDsCounter, 0 mSdLazyCounter, 21636 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34773 SdHoareTripleChecker+Valid, 77843 SdHoareTripleChecker+Invalid, 22842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 21636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:36:34,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34773 Valid, 77843 Invalid, 22842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 21636 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-25 20:36:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2023-12-25 20:36:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 13412. [2023-12-25 20:36:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13412 states, 13411 states have (on average 1.665945865334427) internal successors, (22342), 13411 states have internal predecessors, (22342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13412 states to 13412 states and 22342 transitions. [2023-12-25 20:36:34,677 INFO L78 Accepts]: Start accepts. Automaton has 13412 states and 22342 transitions. Word has length 8930 [2023-12-25 20:36:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:36:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 13412 states and 22342 transitions. [2023-12-25 20:36:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1607.8) internal successors, (8039), 5 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:36:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13412 states and 22342 transitions. [2023-12-25 20:36:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8932 [2023-12-25 20:36:35,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:36:35,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:36:35,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 20:36:35,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:36:35,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:36:35,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:36:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1046776568, now seen corresponding path program 1 times [2023-12-25 20:36:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:36:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444545108] [2023-12-25 20:36:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:36:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:36:36,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:36:36,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738360038] [2023-12-25 20:36:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:36:36,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:36:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:36:36,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:36:36,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-25 20:36:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:36:47,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 44679 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:36:47,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:36:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 14 proven. 671 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-25 20:36:48,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:36:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-12-25 20:36:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:36:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444545108] [2023-12-25 20:36:48,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:36:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738360038] [2023-12-25 20:36:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738360038] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:36:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:36:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:36:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659526261] [2023-12-25 20:36:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:36:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:36:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:36:48,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:36:48,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:36:48,377 INFO L87 Difference]: Start difference. First operand 13412 states and 22342 transitions. Second operand has 5 states, 5 states have (on average 1608.4) internal successors, (8042), 5 states have internal predecessors, (8042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:37:00,970 INFO L93 Difference]: Finished difference Result 46821 states and 77593 transitions. [2023-12-25 20:37:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:37:00,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1608.4) internal successors, (8042), 5 states have internal predecessors, (8042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8931 [2023-12-25 20:37:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:37:01,002 INFO L225 Difference]: With dead ends: 46821 [2023-12-25 20:37:01,003 INFO L226 Difference]: Without dead ends: 24938 [2023-12-25 20:37:01,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17861 GetRequests, 17852 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:37:01,018 INFO L413 NwaCegarLoop]: 31845 mSDtfsCounter, 50340 mSDsluCounter, 31619 mSDsCounter, 0 mSdLazyCounter, 16808 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50340 SdHoareTripleChecker+Valid, 63464 SdHoareTripleChecker+Invalid, 18014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 16808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:37:01,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50340 Valid, 63464 Invalid, 18014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 16808 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-25 20:37:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24938 states. [2023-12-25 20:37:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24938 to 13414. [2023-12-25 20:37:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13414 states, 13413 states have (on average 1.6658465667635876) internal successors, (22344), 13413 states have internal predecessors, (22344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13414 states to 13414 states and 22344 transitions. [2023-12-25 20:37:01,207 INFO L78 Accepts]: Start accepts. Automaton has 13414 states and 22344 transitions. Word has length 8931 [2023-12-25 20:37:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:37:01,212 INFO L495 AbstractCegarLoop]: Abstraction has 13414 states and 22344 transitions. [2023-12-25 20:37:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1608.4) internal successors, (8042), 5 states have internal predecessors, (8042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13414 states and 22344 transitions. [2023-12-25 20:37:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8933 [2023-12-25 20:37:01,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:37:01,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:37:01,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-25 20:37:01,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:37:01,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:37:01,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:37:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1187112356, now seen corresponding path program 1 times [2023-12-25 20:37:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:37:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76900053] [2023-12-25 20:37:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:01,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:37:02,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:37:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666694132] [2023-12-25 20:37:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:37:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:37:02,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:37:02,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-25 20:37:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:37:13,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 44682 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:37:13,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:37:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 16 proven. 671 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-25 20:37:14,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:37:14,614 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2023-12-25 20:37:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:37:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76900053] [2023-12-25 20:37:14,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:37:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666694132] [2023-12-25 20:37:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666694132] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:37:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:37:14,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:37:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698554979] [2023-12-25 20:37:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:37:14,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:37:14,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:37:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:37:14,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:37:14,626 INFO L87 Difference]: Start difference. First operand 13414 states and 22344 transitions. Second operand has 5 states, 5 states have (on average 1609.0) internal successors, (8045), 5 states have internal predecessors, (8045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:37:25,283 INFO L93 Difference]: Finished difference Result 46829 states and 77601 transitions. [2023-12-25 20:37:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:37:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1609.0) internal successors, (8045), 5 states have internal predecessors, (8045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8932 [2023-12-25 20:37:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:37:25,310 INFO L225 Difference]: With dead ends: 46829 [2023-12-25 20:37:25,310 INFO L226 Difference]: Without dead ends: 24939 [2023-12-25 20:37:25,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17863 GetRequests, 17854 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:37:25,329 INFO L413 NwaCegarLoop]: 31837 mSDtfsCounter, 50326 mSDsluCounter, 31615 mSDsCounter, 0 mSdLazyCounter, 16808 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50326 SdHoareTripleChecker+Valid, 63452 SdHoareTripleChecker+Invalid, 18014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 16808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-25 20:37:25,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50326 Valid, 63452 Invalid, 18014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1206 Valid, 16808 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-25 20:37:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2023-12-25 20:37:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 13416. [2023-12-25 20:37:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13416 states, 13415 states have (on average 1.665747297800969) internal successors, (22346), 13415 states have internal predecessors, (22346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13416 states to 13416 states and 22346 transitions. [2023-12-25 20:37:25,492 INFO L78 Accepts]: Start accepts. Automaton has 13416 states and 22346 transitions. Word has length 8932 [2023-12-25 20:37:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:37:25,496 INFO L495 AbstractCegarLoop]: Abstraction has 13416 states and 22346 transitions. [2023-12-25 20:37:25,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1609.0) internal successors, (8045), 5 states have internal predecessors, (8045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:25,497 INFO L276 IsEmpty]: Start isEmpty. Operand 13416 states and 22346 transitions. [2023-12-25 20:37:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8934 [2023-12-25 20:37:25,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:37:25,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:37:26,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-25 20:37:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-25 20:37:26,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:37:26,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:37:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1380082468, now seen corresponding path program 1 times [2023-12-25 20:37:26,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:37:26,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102583520] [2023-12-25 20:37:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:37:26,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:37:26,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108170057] [2023-12-25 20:37:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:26,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:37:26,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:37:26,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:37:26,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-25 20:37:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:37:37,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 44686 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:37:37,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:37:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 18 proven. 671 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-25 20:37:38,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:37:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-25 20:37:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:37:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102583520] [2023-12-25 20:37:39,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:37:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108170057] [2023-12-25 20:37:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108170057] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:37:39,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:37:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:37:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504010906] [2023-12-25 20:37:39,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:37:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:37:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:37:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:37:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:37:39,259 INFO L87 Difference]: Start difference. First operand 13416 states and 22346 transitions. Second operand has 5 states, 5 states have (on average 1609.6) internal successors, (8048), 5 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:37:51,227 INFO L93 Difference]: Finished difference Result 46837 states and 77609 transitions. [2023-12-25 20:37:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:37:51,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1609.6) internal successors, (8048), 5 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8933 [2023-12-25 20:37:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:37:51,258 INFO L225 Difference]: With dead ends: 46837 [2023-12-25 20:37:51,259 INFO L226 Difference]: Without dead ends: 24940 [2023-12-25 20:37:51,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17865 GetRequests, 17856 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:37:51,273 INFO L413 NwaCegarLoop]: 31829 mSDtfsCounter, 50317 mSDsluCounter, 31610 mSDsCounter, 0 mSdLazyCounter, 16808 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50317 SdHoareTripleChecker+Valid, 63439 SdHoareTripleChecker+Invalid, 18014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 16808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-25 20:37:51,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50317 Valid, 63439 Invalid, 18014 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1206 Valid, 16808 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-25 20:37:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24940 states. [2023-12-25 20:37:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24940 to 13418. [2023-12-25 20:37:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 1.6656480584333309) internal successors, (22348), 13417 states have internal predecessors, (22348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 22348 transitions. [2023-12-25 20:37:51,472 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 22348 transitions. Word has length 8933 [2023-12-25 20:37:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:37:51,476 INFO L495 AbstractCegarLoop]: Abstraction has 13418 states and 22348 transitions. [2023-12-25 20:37:51,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1609.6) internal successors, (8048), 5 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:37:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 22348 transitions. [2023-12-25 20:37:51,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8935 [2023-12-25 20:37:51,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:37:51,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:37:52,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-25 20:37:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:37:52,138 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:37:52,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:37:52,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1033651524, now seen corresponding path program 1 times [2023-12-25 20:37:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:37:52,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534822104] [2023-12-25 20:37:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:52,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:37:52,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:37:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462971980] [2023-12-25 20:37:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:37:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:37:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:37:52,871 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:37:52,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-25 20:38:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:38:04,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 44689 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:38:04,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:38:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 20 proven. 671 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-12-25 20:38:05,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:38:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2023-12-25 20:38:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:38:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534822104] [2023-12-25 20:38:05,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:38:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462971980] [2023-12-25 20:38:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462971980] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:38:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:38:05,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:38:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804952094] [2023-12-25 20:38:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:38:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:38:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:38:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:38:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:38:05,360 INFO L87 Difference]: Start difference. First operand 13418 states and 22348 transitions. Second operand has 5 states, 5 states have (on average 1610.2) internal successors, (8051), 5 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:38:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 20:38:16,421 INFO L93 Difference]: Finished difference Result 46845 states and 77617 transitions. [2023-12-25 20:38:16,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 20:38:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1610.2) internal successors, (8051), 5 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8934 [2023-12-25 20:38:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 20:38:16,449 INFO L225 Difference]: With dead ends: 46845 [2023-12-25 20:38:16,449 INFO L226 Difference]: Without dead ends: 24941 [2023-12-25 20:38:16,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17867 GetRequests, 17858 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-25 20:38:16,460 INFO L413 NwaCegarLoop]: 31821 mSDtfsCounter, 34745 mSDsluCounter, 48192 mSDsCounter, 0 mSdLazyCounter, 22512 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34745 SdHoareTripleChecker+Valid, 80013 SdHoareTripleChecker+Invalid, 23718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 22512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-12-25 20:38:16,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34745 Valid, 80013 Invalid, 23718 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1206 Valid, 22512 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-12-25 20:38:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24941 states. [2023-12-25 20:38:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24941 to 13420. [2023-12-25 20:38:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13420 states, 13419 states have (on average 1.6655488486474401) internal successors, (22350), 13419 states have internal predecessors, (22350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:38:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13420 states to 13420 states and 22350 transitions. [2023-12-25 20:38:16,701 INFO L78 Accepts]: Start accepts. Automaton has 13420 states and 22350 transitions. Word has length 8934 [2023-12-25 20:38:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 20:38:16,706 INFO L495 AbstractCegarLoop]: Abstraction has 13420 states and 22350 transitions. [2023-12-25 20:38:16,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1610.2) internal successors, (8051), 5 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 20:38:16,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13420 states and 22350 transitions. [2023-12-25 20:38:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8936 [2023-12-25 20:38:17,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 20:38:17,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 20:38:17,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-25 20:38:17,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-25 20:38:17,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 20:38:17,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 20:38:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1471335106, now seen corresponding path program 1 times [2023-12-25 20:38:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 20:38:17,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384650560] [2023-12-25 20:38:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:38:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 20:38:18,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-25 20:38:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417302361] [2023-12-25 20:38:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 20:38:18,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 20:38:18,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 20:38:18,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 20:38:18,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-25 20:38:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 20:38:29,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 44692 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 20:38:29,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 20:38:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 22 proven. 671 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-25 20:38:30,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 20:38:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-25 20:38:30,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 20:38:30,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384650560] [2023-12-25 20:38:30,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 20:38:30,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417302361] [2023-12-25 20:38:30,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417302361] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 20:38:30,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 20:38:30,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-25 20:38:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662138803] [2023-12-25 20:38:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 20:38:30,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 20:38:30,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 20:38:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 20:38:30,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-25 20:38:30,284 INFO L87 Difference]: Start difference. First operand 13420 states and 22350 transitions. Second operand has 5 states, 5 states have (on average 1610.8) internal successors, (8054), 5 states have internal predecessors, (8054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)