/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:44:27,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:44:27,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:44:27,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:44:27,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:44:27,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:44:27,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:44:27,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:44:27,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:44:27,831 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:44:27,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:44:27,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:44:27,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:44:27,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:44:27,833 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:44:27,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:44:27,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:44:27,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:44:27,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:44:27,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:44:27,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:44:27,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:44:27,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:44:27,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:44:27,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:44:27,843 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:44:27,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:44:27,844 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:44:27,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:44:27,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:44:27,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:44:27,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:44:27,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:44:27,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:44:27,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:44:27,846 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:44:27,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:44:27,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:44:27,847 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:44:28,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:44:28,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:44:28,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:44:28,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:44:28,065 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:44:28,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-6.i [2023-12-19 07:44:29,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:44:29,365 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:44:29,366 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-6.i [2023-12-19 07:44:29,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fefda1aca/dcf94b674ee447b9be315581a63e4845/FLAG56c450c06 [2023-12-19 07:44:29,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fefda1aca/dcf94b674ee447b9be315581a63e4845 [2023-12-19 07:44:29,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:44:29,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:44:29,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:44:29,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:44:29,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:44:29,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f482639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29, skipping insertion in model container [2023-12-19 07:44:29,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:44:29,581 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-6.i[915,928] [2023-12-19 07:44:29,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:44:29,733 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:44:29,752 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-6.i[915,928] [2023-12-19 07:44:29,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:44:29,840 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:44:29,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29 WrapperNode [2023-12-19 07:44:29,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:44:29,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:44:29,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:44:29,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:44:29,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,939 INFO L138 Inliner]: procedures = 26, calls = 112, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 794 [2023-12-19 07:44:29,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:44:29,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:44:29,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:44:29,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:44:29,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:29,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,004 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:44:30,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:44:30,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:44:30,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:44:30,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:44:30,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (1/1) ... [2023-12-19 07:44:30,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:44:30,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:30,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:44:30,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:44:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:44:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:44:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:44:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:44:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:44:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:44:30,277 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:44:30,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:44:31,000 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:44:31,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:44:31,050 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:44:31,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:44:31 BoogieIcfgContainer [2023-12-19 07:44:31,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:44:31,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:44:31,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:44:31,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:44:31,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:44:29" (1/3) ... [2023-12-19 07:44:31,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119e6a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:44:31, skipping insertion in model container [2023-12-19 07:44:31,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:29" (2/3) ... [2023-12-19 07:44:31,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119e6a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:44:31, skipping insertion in model container [2023-12-19 07:44:31,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:44:31" (3/3) ... [2023-12-19 07:44:31,058 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-6.i [2023-12-19 07:44:31,070 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:44:31,070 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:44:31,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:44:31,126 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;@2d40211e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:44:31,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:44:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 204 states have (on average 1.6470588235294117) internal successors, (336), 205 states have internal predecessors, (336), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 07:44:31,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-19 07:44:31,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:31,182 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:31,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:31,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -956649138, now seen corresponding path program 1 times [2023-12-19 07:44:31,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:31,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864884923] [2023-12-19 07:44:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864884923] [2023-12-19 07:44:31,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:44:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897119402] [2023-12-19 07:44:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:31,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:31,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:44:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:31,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:44:31,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 19208 trivial. 0 not checked. [2023-12-19 07:44:31,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:31,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897119402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:31,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:31,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:44:31,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927015962] [2023-12-19 07:44:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:31,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:44:31,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:32,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:44:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:44:32,007 INFO L87 Difference]: Start difference. First operand has 306 states, 204 states have (on average 1.6470588235294117) internal successors, (336), 205 states have internal predecessors, (336), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 07:44:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:32,084 INFO L93 Difference]: Finished difference Result 609 states and 1165 transitions. [2023-12-19 07:44:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:44:32,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 2 states have call successors, (99) Word has length 632 [2023-12-19 07:44:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:32,096 INFO L225 Difference]: With dead ends: 609 [2023-12-19 07:44:32,096 INFO L226 Difference]: Without dead ends: 304 [2023-12-19 07:44:32,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:44:32,104 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:32,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 522 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-19 07:44:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-12-19 07:44:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 203 states have (on average 1.6108374384236452) internal successors, (327), 203 states have internal predecessors, (327), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 07:44:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 525 transitions. [2023-12-19 07:44:32,188 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 525 transitions. Word has length 632 [2023-12-19 07:44:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:32,189 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 525 transitions. [2023-12-19 07:44:32,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 2 states have call successors, (99) [2023-12-19 07:44:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 525 transitions. [2023-12-19 07:44:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-19 07:44:32,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:32,203 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:32,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:32,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:44:32,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:32,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1889423836, now seen corresponding path program 1 times [2023-12-19 07:44:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:32,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889466131] [2023-12-19 07:44:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:32,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320786079] [2023-12-19 07:44:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:32,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:32,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:44:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:32,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:32,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:32,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:32,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889466131] [2023-12-19 07:44:32,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320786079] [2023-12-19 07:44:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320786079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183485747] [2023-12-19 07:44:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:32,982 INFO L87 Difference]: Start difference. First operand 304 states and 525 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:33,063 INFO L93 Difference]: Finished difference Result 814 states and 1393 transitions. [2023-12-19 07:44:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:33,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 633 [2023-12-19 07:44:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:33,075 INFO L225 Difference]: With dead ends: 814 [2023-12-19 07:44:33,075 INFO L226 Difference]: Without dead ends: 511 [2023-12-19 07:44:33,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:33,080 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 511 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:33,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1194 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-19 07:44:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 304. [2023-12-19 07:44:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 203 states have (on average 1.6059113300492611) internal successors, (326), 203 states have internal predecessors, (326), 99 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-12-19 07:44:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 524 transitions. [2023-12-19 07:44:33,126 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 524 transitions. Word has length 633 [2023-12-19 07:44:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:33,129 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 524 transitions. [2023-12-19 07:44:33,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 524 transitions. [2023-12-19 07:44:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-19 07:44:33,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:33,136 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:33,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:33,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:44:33,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:33,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:33,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1536335454, now seen corresponding path program 1 times [2023-12-19 07:44:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:33,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440068272] [2023-12-19 07:44:33,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:33,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:33,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:33,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464805816] [2023-12-19 07:44:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:33,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:33,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:33,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:44:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:33,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:33,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:33,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:33,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:33,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440068272] [2023-12-19 07:44:33,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:33,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464805816] [2023-12-19 07:44:33,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464805816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:33,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:33,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158204067] [2023-12-19 07:44:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:33,842 INFO L87 Difference]: Start difference. First operand 304 states and 524 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:33,909 INFO L93 Difference]: Finished difference Result 763 states and 1327 transitions. [2023-12-19 07:44:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:33,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 633 [2023-12-19 07:44:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:33,914 INFO L225 Difference]: With dead ends: 763 [2023-12-19 07:44:33,914 INFO L226 Difference]: Without dead ends: 460 [2023-12-19 07:44:33,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:33,918 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 267 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:33,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1146 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-19 07:44:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 457. [2023-12-19 07:44:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 342 states have (on average 1.6695906432748537) internal successors, (571), 343 states have internal predecessors, (571), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-19 07:44:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 795 transitions. [2023-12-19 07:44:33,946 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 795 transitions. Word has length 633 [2023-12-19 07:44:33,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:33,946 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 795 transitions. [2023-12-19 07:44:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:33,947 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 795 transitions. [2023-12-19 07:44:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-19 07:44:33,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:33,951 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:33,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:34,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:34,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1004124958, now seen corresponding path program 1 times [2023-12-19 07:44:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409141810] [2023-12-19 07:44:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:34,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256041847] [2023-12-19 07:44:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:34,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:34,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:34,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:44:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:34,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:44:34,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:34,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:34,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:34,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409141810] [2023-12-19 07:44:34,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:34,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256041847] [2023-12-19 07:44:34,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256041847] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:34,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:34,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:44:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774611004] [2023-12-19 07:44:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:44:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:44:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:34,642 INFO L87 Difference]: Start difference. First operand 457 states and 795 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:34,719 INFO L93 Difference]: Finished difference Result 1149 states and 1959 transitions. [2023-12-19 07:44:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:44:34,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 635 [2023-12-19 07:44:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:34,724 INFO L225 Difference]: With dead ends: 1149 [2023-12-19 07:44:34,724 INFO L226 Difference]: Without dead ends: 693 [2023-12-19 07:44:34,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:44:34,726 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 498 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:34,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1946 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-19 07:44:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 572. [2023-12-19 07:44:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 388 states have (on average 1.5721649484536082) internal successors, (610), 389 states have internal predecessors, (610), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-19 07:44:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 968 transitions. [2023-12-19 07:44:34,756 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 968 transitions. Word has length 635 [2023-12-19 07:44:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:34,757 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 968 transitions. [2023-12-19 07:44:34,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 968 transitions. [2023-12-19 07:44:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2023-12-19 07:44:34,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:34,761 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:34,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:34,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:34,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:34,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -620163423, now seen corresponding path program 1 times [2023-12-19 07:44:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:34,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814289186] [2023-12-19 07:44:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:35,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436817999] [2023-12-19 07:44:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:35,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:35,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:35,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:35,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:44:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:35,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:35,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:35,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:35,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814289186] [2023-12-19 07:44:35,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436817999] [2023-12-19 07:44:35,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436817999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:35,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836772368] [2023-12-19 07:44:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:35,391 INFO L87 Difference]: Start difference. First operand 572 states and 968 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:35,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:35,461 INFO L93 Difference]: Finished difference Result 1507 states and 2554 transitions. [2023-12-19 07:44:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:35,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 635 [2023-12-19 07:44:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:35,467 INFO L225 Difference]: With dead ends: 1507 [2023-12-19 07:44:35,467 INFO L226 Difference]: Without dead ends: 936 [2023-12-19 07:44:35,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:35,470 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 308 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1245 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-12-19 07:44:35,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 932. [2023-12-19 07:44:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 654 states have (on average 1.5825688073394495) internal successors, (1035), 657 states have internal predecessors, (1035), 269 states have call successors, (269), 8 states have call predecessors, (269), 8 states have return successors, (269), 266 states have call predecessors, (269), 269 states have call successors, (269) [2023-12-19 07:44:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1573 transitions. [2023-12-19 07:44:35,514 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1573 transitions. Word has length 635 [2023-12-19 07:44:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:35,516 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1573 transitions. [2023-12-19 07:44:35,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1573 transitions. [2023-12-19 07:44:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:35,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:35,520 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:35,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:35,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:35,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:35,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2069247274, now seen corresponding path program 1 times [2023-12-19 07:44:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215192583] [2023-12-19 07:44:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:35,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:35,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091901581] [2023-12-19 07:44:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:35,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:35,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:35,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:35,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:44:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:36,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:36,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:36,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:36,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215192583] [2023-12-19 07:44:36,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:36,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091901581] [2023-12-19 07:44:36,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091901581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:36,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:36,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81706905] [2023-12-19 07:44:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:36,172 INFO L87 Difference]: Start difference. First operand 932 states and 1573 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:36,227 INFO L93 Difference]: Finished difference Result 1876 states and 3156 transitions. [2023-12-19 07:44:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:36,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 637 [2023-12-19 07:44:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:36,233 INFO L225 Difference]: With dead ends: 1876 [2023-12-19 07:44:36,233 INFO L226 Difference]: Without dead ends: 945 [2023-12-19 07:44:36,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:36,236 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 270 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1032 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-12-19 07:44:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 725. [2023-12-19 07:44:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 539 states have (on average 1.614100185528757) internal successors, (870), 540 states have internal predecessors, (870), 179 states have call successors, (179), 6 states have call predecessors, (179), 6 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2023-12-19 07:44:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1228 transitions. [2023-12-19 07:44:36,270 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1228 transitions. Word has length 637 [2023-12-19 07:44:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:36,271 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1228 transitions. [2023-12-19 07:44:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1228 transitions. [2023-12-19 07:44:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:36,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:36,275 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:36,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:36,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:36,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1850392556, now seen corresponding path program 1 times [2023-12-19 07:44:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258661543] [2023-12-19 07:44:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:36,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544891511] [2023-12-19 07:44:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:36,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:36,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:36,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:36,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:44:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:36,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:36,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:36,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258661543] [2023-12-19 07:44:36,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544891511] [2023-12-19 07:44:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544891511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770384340] [2023-12-19 07:44:36,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:36,926 INFO L87 Difference]: Start difference. First operand 725 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:37,006 INFO L93 Difference]: Finished difference Result 1967 states and 3332 transitions. [2023-12-19 07:44:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:37,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 637 [2023-12-19 07:44:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:37,013 INFO L225 Difference]: With dead ends: 1967 [2023-12-19 07:44:37,014 INFO L226 Difference]: Without dead ends: 1243 [2023-12-19 07:44:37,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:37,017 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 297 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:37,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1025 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-12-19 07:44:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1239. [2023-12-19 07:44:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 913 states have (on average 1.6013143483023) internal successors, (1462), 916 states have internal predecessors, (1462), 313 states have call successors, (313), 12 states have call predecessors, (313), 12 states have return successors, (313), 310 states have call predecessors, (313), 313 states have call successors, (313) [2023-12-19 07:44:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2088 transitions. [2023-12-19 07:44:37,081 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2088 transitions. Word has length 637 [2023-12-19 07:44:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:37,082 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 2088 transitions. [2023-12-19 07:44:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2088 transitions. [2023-12-19 07:44:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:37,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:37,087 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:37,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:37,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:37,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:37,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash 836700372, now seen corresponding path program 1 times [2023-12-19 07:44:37,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:37,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313562139] [2023-12-19 07:44:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:37,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:37,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335021456] [2023-12-19 07:44:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:37,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:37,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:37,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:37,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:44:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:37,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:37,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:37,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313562139] [2023-12-19 07:44:37,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335021456] [2023-12-19 07:44:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335021456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638459928] [2023-12-19 07:44:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:37,788 INFO L87 Difference]: Start difference. First operand 1239 states and 2088 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:37,890 INFO L93 Difference]: Finished difference Result 3267 states and 5454 transitions. [2023-12-19 07:44:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:37,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 637 [2023-12-19 07:44:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:37,903 INFO L225 Difference]: With dead ends: 3267 [2023-12-19 07:44:37,903 INFO L226 Difference]: Without dead ends: 2029 [2023-12-19 07:44:37,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:37,909 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 291 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:37,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1048 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2023-12-19 07:44:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2026. [2023-12-19 07:44:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1392 states have (on average 1.5280172413793103) internal successors, (2127), 1399 states have internal predecessors, (2127), 609 states have call successors, (609), 24 states have call predecessors, (609), 24 states have return successors, (609), 602 states have call predecessors, (609), 609 states have call successors, (609) [2023-12-19 07:44:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 3345 transitions. [2023-12-19 07:44:38,010 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 3345 transitions. Word has length 637 [2023-12-19 07:44:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:38,011 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 3345 transitions. [2023-12-19 07:44:38,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 3345 transitions. [2023-12-19 07:44:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:38,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:38,016 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:38,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:38,227 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,SelfDestructingSolverStorable7 [2023-12-19 07:44:38,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -443163306, now seen corresponding path program 1 times [2023-12-19 07:44:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311810666] [2023-12-19 07:44:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:38,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088577908] [2023-12-19 07:44:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:38,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:38,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:38,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:44:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:38,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:44:38,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:38,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311810666] [2023-12-19 07:44:38,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:38,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088577908] [2023-12-19 07:44:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088577908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:38,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168312309] [2023-12-19 07:44:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:38,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:38,713 INFO L87 Difference]: Start difference. First operand 2026 states and 3345 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:38,847 INFO L93 Difference]: Finished difference Result 5744 states and 9481 transitions. [2023-12-19 07:44:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 637 [2023-12-19 07:44:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:38,866 INFO L225 Difference]: With dead ends: 5744 [2023-12-19 07:44:38,866 INFO L226 Difference]: Without dead ends: 3719 [2023-12-19 07:44:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:38,875 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 308 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1180 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2023-12-19 07:44:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3709. [2023-12-19 07:44:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 2611 states have (on average 1.533129069322099) internal successors, (4003), 2626 states have internal predecessors, (4003), 1049 states have call successors, (1049), 48 states have call predecessors, (1049), 48 states have return successors, (1049), 1034 states have call predecessors, (1049), 1049 states have call successors, (1049) [2023-12-19 07:44:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 6101 transitions. [2023-12-19 07:44:39,093 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 6101 transitions. Word has length 637 [2023-12-19 07:44:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:39,094 INFO L495 AbstractCegarLoop]: Abstraction has 3709 states and 6101 transitions. [2023-12-19 07:44:39,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 6101 transitions. [2023-12-19 07:44:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:39,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:39,102 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:39,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:39,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:39,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1362275028, now seen corresponding path program 1 times [2023-12-19 07:44:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788526624] [2023-12-19 07:44:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:39,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:39,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957332061] [2023-12-19 07:44:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:39,358 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:39,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:44:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:39,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:44:39,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9248 proven. 111 refuted. 0 times theorem prover too weak. 10045 trivial. 0 not checked. [2023-12-19 07:44:40,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 183 proven. 111 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:44:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788526624] [2023-12-19 07:44:40,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957332061] [2023-12-19 07:44:40,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957332061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:44:40,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:44:40,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 07:44:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275064372] [2023-12-19 07:44:40,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:40,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:44:40,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:44:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:44:40,353 INFO L87 Difference]: Start difference. First operand 3709 states and 6101 transitions. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2023-12-19 07:44:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:40,926 INFO L93 Difference]: Finished difference Result 7513 states and 12289 transitions. [2023-12-19 07:44:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:44:40,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) Word has length 637 [2023-12-19 07:44:40,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:40,955 INFO L225 Difference]: With dead ends: 7513 [2023-12-19 07:44:40,956 INFO L226 Difference]: Without dead ends: 3805 [2023-12-19 07:44:40,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 07:44:40,966 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 588 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:40,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1017 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:44:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2023-12-19 07:44:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3741. [2023-12-19 07:44:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 2635 states have (on average 1.5222011385199241) internal successors, (4011), 2650 states have internal predecessors, (4011), 1049 states have call successors, (1049), 56 states have call predecessors, (1049), 56 states have return successors, (1049), 1034 states have call predecessors, (1049), 1049 states have call successors, (1049) [2023-12-19 07:44:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 6109 transitions. [2023-12-19 07:44:41,214 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 6109 transitions. Word has length 637 [2023-12-19 07:44:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:41,215 INFO L495 AbstractCegarLoop]: Abstraction has 3741 states and 6109 transitions. [2023-12-19 07:44:41,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 8 states have internal predecessors, (213), 3 states have call successors, (136), 2 states have call predecessors, (136), 4 states have return successors, (137), 3 states have call predecessors, (137), 3 states have call successors, (137) [2023-12-19 07:44:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 6109 transitions. [2023-12-19 07:44:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:41,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:41,224 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:41,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:41,436 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,SelfDestructingSolverStorable9 [2023-12-19 07:44:41,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:41,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2092824320, now seen corresponding path program 1 times [2023-12-19 07:44:41,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:41,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972265521] [2023-12-19 07:44:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:41,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976420018] [2023-12-19 07:44:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:41,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:41,492 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:41,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:44:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:41,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:44:41,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 8540 proven. 93 refuted. 0 times theorem prover too weak. 10771 trivial. 0 not checked. [2023-12-19 07:44:42,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 201 proven. 93 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:44:42,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972265521] [2023-12-19 07:44:42,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:42,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976420018] [2023-12-19 07:44:42,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976420018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:44:42,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:44:42,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:44:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702489002] [2023-12-19 07:44:42,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:44:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:44:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:44:42,472 INFO L87 Difference]: Start difference. First operand 3741 states and 6109 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:44:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:43,240 INFO L93 Difference]: Finished difference Result 5947 states and 9686 transitions. [2023-12-19 07:44:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:44:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) Word has length 637 [2023-12-19 07:44:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:43,277 INFO L225 Difference]: With dead ends: 5947 [2023-12-19 07:44:43,277 INFO L226 Difference]: Without dead ends: 2207 [2023-12-19 07:44:43,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1276 GetRequests, 1266 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:44:43,284 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 599 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:43,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1200 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:44:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2023-12-19 07:44:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2170. [2023-12-19 07:44:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 1505 states have (on average 1.4863787375415283) internal successors, (2237), 1513 states have internal predecessors, (2237), 628 states have call successors, (628), 36 states have call predecessors, (628), 36 states have return successors, (628), 620 states have call predecessors, (628), 628 states have call successors, (628) [2023-12-19 07:44:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3493 transitions. [2023-12-19 07:44:43,398 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3493 transitions. Word has length 637 [2023-12-19 07:44:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:43,398 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 3493 transitions. [2023-12-19 07:44:43,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 2 states have call predecessors, (131), 2 states have call successors, (131) [2023-12-19 07:44:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3493 transitions. [2023-12-19 07:44:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 07:44:43,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:43,403 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:43,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:43,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:44:43,614 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash 346742451, now seen corresponding path program 1 times [2023-12-19 07:44:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515001705] [2023-12-19 07:44:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:43,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560882203] [2023-12-19 07:44:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:43,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:43,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:43,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:43,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:44:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:44,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:44:44,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 8240 proven. 87 refuted. 0 times theorem prover too weak. 11077 trivial. 0 not checked. [2023-12-19 07:44:44,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 207 proven. 87 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:44:44,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515001705] [2023-12-19 07:44:44,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560882203] [2023-12-19 07:44:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560882203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:44:44,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:44:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:44:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214621044] [2023-12-19 07:44:44,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:44:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:44:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:44:44,578 INFO L87 Difference]: Start difference. First operand 2170 states and 3493 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 07:44:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:45,430 INFO L93 Difference]: Finished difference Result 4274 states and 6854 transitions. [2023-12-19 07:44:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:44:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 638 [2023-12-19 07:44:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:45,444 INFO L225 Difference]: With dead ends: 4274 [2023-12-19 07:44:45,445 INFO L226 Difference]: Without dead ends: 2230 [2023-12-19 07:44:45,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1278 GetRequests, 1268 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:44:45,450 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 535 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:45,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1270 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:44:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2023-12-19 07:44:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2193. [2023-12-19 07:44:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1521 states have (on average 1.4760026298487836) internal successors, (2245), 1529 states have internal predecessors, (2245), 630 states have call successors, (630), 41 states have call predecessors, (630), 41 states have return successors, (630), 622 states have call predecessors, (630), 630 states have call successors, (630) [2023-12-19 07:44:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3505 transitions. [2023-12-19 07:44:45,563 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3505 transitions. Word has length 638 [2023-12-19 07:44:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:45,564 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 3505 transitions. [2023-12-19 07:44:45,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (128), 2 states have call predecessors, (128), 4 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2023-12-19 07:44:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3505 transitions. [2023-12-19 07:44:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 07:44:45,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:45,569 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:45,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:45,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:44:45,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:45,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1935090353, now seen corresponding path program 1 times [2023-12-19 07:44:45,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:45,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105925457] [2023-12-19 07:44:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:45,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:45,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:45,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781054591] [2023-12-19 07:44:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:45,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:45,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:45,830 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:45,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:44:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:46,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:44:46,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:46,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:46,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105925457] [2023-12-19 07:44:46,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781054591] [2023-12-19 07:44:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781054591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:46,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:46,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:44:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990132839] [2023-12-19 07:44:46,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:44:46,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:46,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:44:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:46,700 INFO L87 Difference]: Start difference. First operand 2193 states and 3505 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:46,885 INFO L93 Difference]: Finished difference Result 6313 states and 10121 transitions. [2023-12-19 07:44:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:44:46,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 638 [2023-12-19 07:44:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:46,905 INFO L225 Difference]: With dead ends: 6313 [2023-12-19 07:44:46,905 INFO L226 Difference]: Without dead ends: 4253 [2023-12-19 07:44:46,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:44:46,913 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 205 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:46,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1113 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:44:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2023-12-19 07:44:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4243. [2023-12-19 07:44:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 2974 states have (on average 1.4815063887020847) internal successors, (4406), 2989 states have internal predecessors, (4406), 1191 states have call successors, (1191), 77 states have call predecessors, (1191), 77 states have return successors, (1191), 1176 states have call predecessors, (1191), 1191 states have call successors, (1191) [2023-12-19 07:44:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6788 transitions. [2023-12-19 07:44:47,256 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6788 transitions. Word has length 638 [2023-12-19 07:44:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:47,257 INFO L495 AbstractCegarLoop]: Abstraction has 4243 states and 6788 transitions. [2023-12-19 07:44:47,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6788 transitions. [2023-12-19 07:44:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2023-12-19 07:44:47,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:47,265 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:47,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 07:44:47,475 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:47,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash 875640417, now seen corresponding path program 1 times [2023-12-19 07:44:47,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:47,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725169841] [2023-12-19 07:44:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:47,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042535797] [2023-12-19 07:44:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:47,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:47,519 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:47,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 07:44:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:47,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:44:47,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:48,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:48,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725169841] [2023-12-19 07:44:48,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042535797] [2023-12-19 07:44:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042535797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:48,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:44:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701978384] [2023-12-19 07:44:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:44:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:44:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:44:48,660 INFO L87 Difference]: Start difference. First operand 4243 states and 6788 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:49,527 INFO L93 Difference]: Finished difference Result 11635 states and 18887 transitions. [2023-12-19 07:44:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 07:44:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 639 [2023-12-19 07:44:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:49,582 INFO L225 Difference]: With dead ends: 11635 [2023-12-19 07:44:49,582 INFO L226 Difference]: Without dead ends: 7525 [2023-12-19 07:44:49,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:44:49,594 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 998 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:49,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 2358 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:44:49,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7525 states. [2023-12-19 07:44:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7525 to 6431. [2023-12-19 07:44:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6431 states, 5127 states have (on average 1.5812365905987906) internal successors, (8107), 5141 states have internal predecessors, (8107), 1221 states have call successors, (1221), 82 states have call predecessors, (1221), 82 states have return successors, (1221), 1207 states have call predecessors, (1221), 1221 states have call successors, (1221) [2023-12-19 07:44:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6431 states to 6431 states and 10549 transitions. [2023-12-19 07:44:50,055 INFO L78 Accepts]: Start accepts. Automaton has 6431 states and 10549 transitions. Word has length 639 [2023-12-19 07:44:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:50,056 INFO L495 AbstractCegarLoop]: Abstraction has 6431 states and 10549 transitions. [2023-12-19 07:44:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 6 states have internal predecessors, (147), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6431 states and 10549 transitions. [2023-12-19 07:44:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:44:50,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:50,065 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:50,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:50,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:50,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -932168753, now seen corresponding path program 1 times [2023-12-19 07:44:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478558908] [2023-12-19 07:44:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:50,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334386223] [2023-12-19 07:44:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:50,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:50,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:50,326 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:50,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 07:44:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:50,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:44:50,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:51,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478558908] [2023-12-19 07:44:51,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334386223] [2023-12-19 07:44:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334386223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:51,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:44:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528560247] [2023-12-19 07:44:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:44:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:44:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:44:51,247 INFO L87 Difference]: Start difference. First operand 6431 states and 10549 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:51,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:51,873 INFO L93 Difference]: Finished difference Result 10391 states and 17087 transitions. [2023-12-19 07:44:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:44:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:44:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:51,891 INFO L225 Difference]: With dead ends: 10391 [2023-12-19 07:44:51,892 INFO L226 Difference]: Without dead ends: 7731 [2023-12-19 07:44:51,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:44:51,899 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 776 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:51,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2435 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:44:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2023-12-19 07:44:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 6471. [2023-12-19 07:44:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6471 states, 5167 states have (on average 1.5813818463324947) internal successors, (8171), 5181 states have internal predecessors, (8171), 1221 states have call successors, (1221), 82 states have call predecessors, (1221), 82 states have return successors, (1221), 1207 states have call predecessors, (1221), 1221 states have call successors, (1221) [2023-12-19 07:44:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 10613 transitions. [2023-12-19 07:44:52,243 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 10613 transitions. Word has length 640 [2023-12-19 07:44:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:52,245 INFO L495 AbstractCegarLoop]: Abstraction has 6471 states and 10613 transitions. [2023-12-19 07:44:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 10613 transitions. [2023-12-19 07:44:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:44:52,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:52,255 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:52,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 07:44:52,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:52,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash -684022259, now seen corresponding path program 1 times [2023-12-19 07:44:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637742664] [2023-12-19 07:44:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:52,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545488664] [2023-12-19 07:44:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:52,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:52,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 07:44:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:52,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:44:52,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:53,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637742664] [2023-12-19 07:44:53,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545488664] [2023-12-19 07:44:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545488664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:53,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205971305] [2023-12-19 07:44:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:44:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:44:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:53,554 INFO L87 Difference]: Start difference. First operand 6471 states and 10613 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:54,261 INFO L93 Difference]: Finished difference Result 18057 states and 29227 transitions. [2023-12-19 07:44:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:44:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:44:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:54,298 INFO L225 Difference]: With dead ends: 18057 [2023-12-19 07:44:54,299 INFO L226 Difference]: Without dead ends: 13867 [2023-12-19 07:44:54,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:54,313 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 560 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:54,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1329 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:44:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13867 states. [2023-12-19 07:44:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13867 to 13859. [2023-12-19 07:44:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13859 states, 10808 states have (on average 1.549962990377498) internal successors, (16752), 10844 states have internal predecessors, (16752), 2859 states have call successors, (2859), 191 states have call predecessors, (2859), 191 states have return successors, (2859), 2823 states have call predecessors, (2859), 2859 states have call successors, (2859) [2023-12-19 07:44:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13859 states to 13859 states and 22470 transitions. [2023-12-19 07:44:54,956 INFO L78 Accepts]: Start accepts. Automaton has 13859 states and 22470 transitions. Word has length 640 [2023-12-19 07:44:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:54,957 INFO L495 AbstractCegarLoop]: Abstraction has 13859 states and 22470 transitions. [2023-12-19 07:44:54,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13859 states and 22470 transitions. [2023-12-19 07:44:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:44:54,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:54,967 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:54,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:55,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 07:44:55,176 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:55,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1963885937, now seen corresponding path program 1 times [2023-12-19 07:44:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:55,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915276616] [2023-12-19 07:44:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:55,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971868442] [2023-12-19 07:44:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:55,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:55,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:55,218 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:55,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 07:44:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:55,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:44:55,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:44:56,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:44:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915276616] [2023-12-19 07:44:56,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971868442] [2023-12-19 07:44:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971868442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:44:56,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:44:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:44:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527475195] [2023-12-19 07:44:56,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:44:56,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:44:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:44:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:56,297 INFO L87 Difference]: Start difference. First operand 13859 states and 22470 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:44:57,339 INFO L93 Difference]: Finished difference Result 32461 states and 52431 transitions. [2023-12-19 07:44:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:44:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:44:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:44:57,399 INFO L225 Difference]: With dead ends: 32461 [2023-12-19 07:44:57,399 INFO L226 Difference]: Without dead ends: 22391 [2023-12-19 07:44:57,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:44:57,431 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 809 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:44:57,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1684 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:44:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22391 states. [2023-12-19 07:44:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22391 to 18111. [2023-12-19 07:44:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18111 states, 15060 states have (on average 1.60929614873838) internal successors, (24236), 15096 states have internal predecessors, (24236), 2859 states have call successors, (2859), 191 states have call predecessors, (2859), 191 states have return successors, (2859), 2823 states have call predecessors, (2859), 2859 states have call successors, (2859) [2023-12-19 07:44:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18111 states to 18111 states and 29954 transitions. [2023-12-19 07:44:58,267 INFO L78 Accepts]: Start accepts. Automaton has 18111 states and 29954 transitions. Word has length 640 [2023-12-19 07:44:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:44:58,268 INFO L495 AbstractCegarLoop]: Abstraction has 18111 states and 29954 transitions. [2023-12-19 07:44:58,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:44:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 18111 states and 29954 transitions. [2023-12-19 07:44:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:44:58,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:58,283 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:44:58,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 07:44:58,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 07:44:58,501 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:58,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1513432909, now seen corresponding path program 1 times [2023-12-19 07:44:58,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:58,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673835007] [2023-12-19 07:44:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:58,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:44:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888482787] [2023-12-19 07:44:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:58,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:58,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:58,547 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:44:58,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 07:44:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:59,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:44:59,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:44:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 5768 proven. 51 refuted. 0 times theorem prover too weak. 13585 trivial. 0 not checked. [2023-12-19 07:44:59,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:44:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 243 proven. 51 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:44:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673835007] [2023-12-19 07:44:59,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:44:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888482787] [2023-12-19 07:44:59,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888482787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:44:59,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:44:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:44:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907132491] [2023-12-19 07:44:59,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:44:59,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:44:59,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:44:59,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:44:59,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:44:59,477 INFO L87 Difference]: Start difference. First operand 18111 states and 29954 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-12-19 07:45:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:00,124 INFO L93 Difference]: Finished difference Result 27423 states and 45285 transitions. [2023-12-19 07:45:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 640 [2023-12-19 07:45:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:00,158 INFO L225 Difference]: With dead ends: 27423 [2023-12-19 07:45:00,158 INFO L226 Difference]: Without dead ends: 14421 [2023-12-19 07:45:00,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1272 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:45:00,185 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 331 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:00,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1020 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:45:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14421 states. [2023-12-19 07:45:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14421 to 11697. [2023-12-19 07:45:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11697 states, 10788 states have (on average 1.6822395253985911) internal successors, (18148), 10794 states have internal predecessors, (18148), 844 states have call successors, (844), 64 states have call predecessors, (844), 64 states have return successors, (844), 838 states have call predecessors, (844), 844 states have call successors, (844) [2023-12-19 07:45:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11697 states to 11697 states and 19836 transitions. [2023-12-19 07:45:00,644 INFO L78 Accepts]: Start accepts. Automaton has 11697 states and 19836 transitions. Word has length 640 [2023-12-19 07:45:00,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:00,645 INFO L495 AbstractCegarLoop]: Abstraction has 11697 states and 19836 transitions. [2023-12-19 07:45:00,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2023-12-19 07:45:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11697 states and 19836 transitions. [2023-12-19 07:45:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:00,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:00,656 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:00,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:00,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 07:45:00,867 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:00,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash -717757743, now seen corresponding path program 1 times [2023-12-19 07:45:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:00,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583923058] [2023-12-19 07:45:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:00,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:00,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:00,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398533821] [2023-12-19 07:45:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:00,919 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:00,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 07:45:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:01,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:01,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 7148 proven. 69 refuted. 0 times theorem prover too weak. 12187 trivial. 0 not checked. [2023-12-19 07:45:01,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 225 proven. 69 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:45:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583923058] [2023-12-19 07:45:01,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398533821] [2023-12-19 07:45:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398533821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:01,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:45:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703727179] [2023-12-19 07:45:01,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:01,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:01,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:01,838 INFO L87 Difference]: Start difference. First operand 11697 states and 19836 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:45:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:02,472 INFO L93 Difference]: Finished difference Result 18443 states and 31052 transitions. [2023-12-19 07:45:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 640 [2023-12-19 07:45:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:02,489 INFO L225 Difference]: With dead ends: 18443 [2023-12-19 07:45:02,489 INFO L226 Difference]: Without dead ends: 11759 [2023-12-19 07:45:02,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1272 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:45:02,499 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 547 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:02,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1015 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:45:02,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11759 states. [2023-12-19 07:45:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11759 to 11685. [2023-12-19 07:45:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11685 states, 10771 states have (on average 1.6744034908550738) internal successors, (18035), 10777 states have internal predecessors, (18035), 844 states have call successors, (844), 69 states have call predecessors, (844), 69 states have return successors, (844), 838 states have call predecessors, (844), 844 states have call successors, (844) [2023-12-19 07:45:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11685 states to 11685 states and 19723 transitions. [2023-12-19 07:45:02,902 INFO L78 Accepts]: Start accepts. Automaton has 11685 states and 19723 transitions. Word has length 640 [2023-12-19 07:45:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:02,903 INFO L495 AbstractCegarLoop]: Abstraction has 11685 states and 19723 transitions. [2023-12-19 07:45:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-19 07:45:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 11685 states and 19723 transitions. [2023-12-19 07:45:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:02,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:02,914 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:02,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 07:45:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:03,115 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:03,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -76201199, now seen corresponding path program 1 times [2023-12-19 07:45:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120296117] [2023-12-19 07:45:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:03,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470758779] [2023-12-19 07:45:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:03,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:03,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:03,163 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:03,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 07:45:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:03,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:45:03,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:45:04,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:04,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120296117] [2023-12-19 07:45:04,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:04,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470758779] [2023-12-19 07:45:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470758779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:04,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:04,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:45:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189133866] [2023-12-19 07:45:04,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:04,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:04,280 INFO L87 Difference]: Start difference. First operand 11685 states and 19723 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:05,004 INFO L93 Difference]: Finished difference Result 16849 states and 28334 transitions. [2023-12-19 07:45:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:45:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:45:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:05,027 INFO L225 Difference]: With dead ends: 16849 [2023-12-19 07:45:05,028 INFO L226 Difference]: Without dead ends: 12089 [2023-12-19 07:45:05,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:45:05,039 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 895 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:05,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2418 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:45:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2023-12-19 07:45:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 11685. [2023-12-19 07:45:05,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11685 states, 10771 states have (on average 1.6729180206108996) internal successors, (18019), 10777 states have internal predecessors, (18019), 844 states have call successors, (844), 69 states have call predecessors, (844), 69 states have return successors, (844), 838 states have call predecessors, (844), 844 states have call successors, (844) [2023-12-19 07:45:05,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11685 states to 11685 states and 19707 transitions. [2023-12-19 07:45:05,390 INFO L78 Accepts]: Start accepts. Automaton has 11685 states and 19707 transitions. Word has length 640 [2023-12-19 07:45:05,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:05,391 INFO L495 AbstractCegarLoop]: Abstraction has 11685 states and 19707 transitions. [2023-12-19 07:45:05,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:05,391 INFO L276 IsEmpty]: Start isEmpty. Operand 11685 states and 19707 transitions. [2023-12-19 07:45:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:05,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:05,401 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:05,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:05,606 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:05,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:05,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1218564621, now seen corresponding path program 1 times [2023-12-19 07:45:05,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:05,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567545010] [2023-12-19 07:45:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:05,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:05,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613590976] [2023-12-19 07:45:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:05,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:05,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:05,654 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:05,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 07:45:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:06,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:45:06,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 3948 proven. 261 refuted. 0 times theorem prover too weak. 15195 trivial. 0 not checked. [2023-12-19 07:45:06,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 33 proven. 261 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:45:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567545010] [2023-12-19 07:45:07,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613590976] [2023-12-19 07:45:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613590976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:07,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:07,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:45:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27317520] [2023-12-19 07:45:07,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:45:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:45:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:45:07,010 INFO L87 Difference]: Start difference. First operand 11685 states and 19707 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 2 states have call predecessors, (187), 2 states have call successors, (187) [2023-12-19 07:45:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:08,257 INFO L93 Difference]: Finished difference Result 24889 states and 41650 transitions. [2023-12-19 07:45:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:45:08,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 2 states have call predecessors, (187), 2 states have call successors, (187) Word has length 640 [2023-12-19 07:45:08,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:08,292 INFO L225 Difference]: With dead ends: 24889 [2023-12-19 07:45:08,292 INFO L226 Difference]: Without dead ends: 18393 [2023-12-19 07:45:08,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 1271 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:45:08,308 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 523 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:08,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 2386 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:45:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18393 states. [2023-12-19 07:45:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18393 to 18253. [2023-12-19 07:45:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18253 states, 16516 states have (on average 1.6615403245337854) internal successors, (27442), 16528 states have internal predecessors, (27442), 1589 states have call successors, (1589), 147 states have call predecessors, (1589), 147 states have return successors, (1589), 1577 states have call predecessors, (1589), 1589 states have call successors, (1589) [2023-12-19 07:45:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 30620 transitions. [2023-12-19 07:45:08,931 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 30620 transitions. Word has length 640 [2023-12-19 07:45:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:08,931 INFO L495 AbstractCegarLoop]: Abstraction has 18253 states and 30620 transitions. [2023-12-19 07:45:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 2 states have call successors, (186), 2 states have call predecessors, (186), 4 states have return successors, (187), 2 states have call predecessors, (187), 2 states have call successors, (187) [2023-12-19 07:45:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 30620 transitions. [2023-12-19 07:45:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:08,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:08,941 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:08,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 07:45:09,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:09,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:09,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:09,149 INFO L85 PathProgramCache]: Analyzing trace with hash -517500043, now seen corresponding path program 1 times [2023-12-19 07:45:09,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:09,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300162117] [2023-12-19 07:45:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:09,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:09,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532502899] [2023-12-19 07:45:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:09,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:09,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 07:45:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:09,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:09,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:45:09,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300162117] [2023-12-19 07:45:09,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:09,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532502899] [2023-12-19 07:45:09,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532502899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:09,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543583098] [2023-12-19 07:45:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:09,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:09,637 INFO L87 Difference]: Start difference. First operand 18253 states and 30620 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:10,303 INFO L93 Difference]: Finished difference Result 43250 states and 72425 transitions. [2023-12-19 07:45:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:45:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:10,355 INFO L225 Difference]: With dead ends: 43250 [2023-12-19 07:45:10,356 INFO L226 Difference]: Without dead ends: 27784 [2023-12-19 07:45:10,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:10,380 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 504 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:10,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 995 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27784 states. [2023-12-19 07:45:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27784 to 26478. [2023-12-19 07:45:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26478 states, 23865 states have (on average 1.65723863398282) internal successors, (39550), 23887 states have internal predecessors, (39550), 2377 states have call successors, (2377), 235 states have call predecessors, (2377), 235 states have return successors, (2377), 2355 states have call predecessors, (2377), 2377 states have call successors, (2377) [2023-12-19 07:45:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26478 states to 26478 states and 44304 transitions. [2023-12-19 07:45:11,412 INFO L78 Accepts]: Start accepts. Automaton has 26478 states and 44304 transitions. Word has length 640 [2023-12-19 07:45:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:11,413 INFO L495 AbstractCegarLoop]: Abstraction has 26478 states and 44304 transitions. [2023-12-19 07:45:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 26478 states and 44304 transitions. [2023-12-19 07:45:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:11,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:11,425 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:11,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 07:45:11,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:11,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:11,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 43199735, now seen corresponding path program 1 times [2023-12-19 07:45:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:11,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255093105] [2023-12-19 07:45:11,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:11,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:11,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792892920] [2023-12-19 07:45:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:11,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:11,669 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:11,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 07:45:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:12,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:45:12,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 6140 proven. 237 refuted. 0 times theorem prover too weak. 13027 trivial. 0 not checked. [2023-12-19 07:45:12,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 57 proven. 237 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:45:12,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255093105] [2023-12-19 07:45:12,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792892920] [2023-12-19 07:45:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792892920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:12,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 07:45:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132404529] [2023-12-19 07:45:12,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:12,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 07:45:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 07:45:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:45:12,698 INFO L87 Difference]: Start difference. First operand 26478 states and 44304 transitions. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-19 07:45:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:14,481 INFO L93 Difference]: Finished difference Result 90196 states and 150991 transitions. [2023-12-19 07:45:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 07:45:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) Word has length 640 [2023-12-19 07:45:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:14,600 INFO L225 Difference]: With dead ends: 90196 [2023-12-19 07:45:14,600 INFO L226 Difference]: Without dead ends: 63944 [2023-12-19 07:45:14,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1289 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-12-19 07:45:14,648 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1036 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:14,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1754 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:45:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63944 states. [2023-12-19 07:45:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63944 to 49417. [2023-12-19 07:45:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49417 states, 46232 states have (on average 1.6482955528638172) internal successors, (76204), 46284 states have internal predecessors, (76204), 2827 states have call successors, (2827), 357 states have call predecessors, (2827), 357 states have return successors, (2827), 2775 states have call predecessors, (2827), 2827 states have call successors, (2827) [2023-12-19 07:45:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49417 states to 49417 states and 81858 transitions. [2023-12-19 07:45:16,325 INFO L78 Accepts]: Start accepts. Automaton has 49417 states and 81858 transitions. Word has length 640 [2023-12-19 07:45:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:16,326 INFO L495 AbstractCegarLoop]: Abstraction has 49417 states and 81858 transitions. [2023-12-19 07:45:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-19 07:45:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 49417 states and 81858 transitions. [2023-12-19 07:45:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:16,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:16,347 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:16,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:16,547 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:16,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1750767051, now seen corresponding path program 1 times [2023-12-19 07:45:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:16,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613431413] [2023-12-19 07:45:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:16,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:16,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572541600] [2023-12-19 07:45:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:16,610 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:16,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 07:45:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:17,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 07:45:17,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:45:17,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613431413] [2023-12-19 07:45:17,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572541600] [2023-12-19 07:45:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572541600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:17,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:17,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:45:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064247252] [2023-12-19 07:45:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:45:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:45:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:45:17,152 INFO L87 Difference]: Start difference. First operand 49417 states and 81858 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:20,433 INFO L93 Difference]: Finished difference Result 161457 states and 266527 transitions. [2023-12-19 07:45:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:45:20,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:45:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:20,637 INFO L225 Difference]: With dead ends: 161457 [2023-12-19 07:45:20,638 INFO L226 Difference]: Without dead ends: 120255 [2023-12-19 07:45:20,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:45:20,708 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1476 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:20,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2395 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:45:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120255 states. [2023-12-19 07:45:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120255 to 114255. [2023-12-19 07:45:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114255 states, 107890 states have (on average 1.6504773380294744) internal successors, (178070), 108062 states have internal predecessors, (178070), 5587 states have call successors, (5587), 777 states have call predecessors, (5587), 777 states have return successors, (5587), 5415 states have call predecessors, (5587), 5587 states have call successors, (5587) [2023-12-19 07:45:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114255 states to 114255 states and 189244 transitions. [2023-12-19 07:45:24,587 INFO L78 Accepts]: Start accepts. Automaton has 114255 states and 189244 transitions. Word has length 640 [2023-12-19 07:45:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:24,588 INFO L495 AbstractCegarLoop]: Abstraction has 114255 states and 189244 transitions. [2023-12-19 07:45:24,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 114255 states and 189244 transitions. [2023-12-19 07:45:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:24,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:24,635 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:24,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:24,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:24,844 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:24,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash 605038199, now seen corresponding path program 1 times [2023-12-19 07:45:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763202476] [2023-12-19 07:45:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:24,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234469234] [2023-12-19 07:45:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:24,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:24,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:24,888 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:24,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 07:45:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:25,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:45:25,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9644 proven. 165 refuted. 0 times theorem prover too weak. 9595 trivial. 0 not checked. [2023-12-19 07:45:25,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 129 proven. 165 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:45:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:26,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763202476] [2023-12-19 07:45:26,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:26,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234469234] [2023-12-19 07:45:26,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234469234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:26,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:45:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735250219] [2023-12-19 07:45:26,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:26,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:45:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:45:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:45:26,202 INFO L87 Difference]: Start difference. First operand 114255 states and 189244 transitions. Second operand has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-12-19 07:45:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:33,424 INFO L93 Difference]: Finished difference Result 310087 states and 499975 transitions. [2023-12-19 07:45:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 07:45:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) Word has length 640 [2023-12-19 07:45:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:33,884 INFO L225 Difference]: With dead ends: 310087 [2023-12-19 07:45:33,884 INFO L226 Difference]: Without dead ends: 226983 [2023-12-19 07:45:34,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-12-19 07:45:34,014 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1095 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:34,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1632 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 07:45:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226983 states. [2023-12-19 07:45:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226983 to 178703. [2023-12-19 07:45:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178703 states, 167206 states have (on average 1.6146310539095488) internal successors, (269976), 167558 states have internal predecessors, (269976), 10027 states have call successors, (10027), 1469 states have call predecessors, (10027), 1469 states have return successors, (10027), 9675 states have call predecessors, (10027), 10027 states have call successors, (10027) [2023-12-19 07:45:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178703 states to 178703 states and 290030 transitions. [2023-12-19 07:45:41,565 INFO L78 Accepts]: Start accepts. Automaton has 178703 states and 290030 transitions. Word has length 640 [2023-12-19 07:45:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:41,566 INFO L495 AbstractCegarLoop]: Abstraction has 178703 states and 290030 transitions. [2023-12-19 07:45:41,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 3 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (155), 3 states have call predecessors, (155), 3 states have call successors, (155) [2023-12-19 07:45:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 178703 states and 290030 transitions. [2023-12-19 07:45:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:41,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:41,667 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:45:41,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 07:45:41,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:41,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 667077813, now seen corresponding path program 1 times [2023-12-19 07:45:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:41,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471370250] [2023-12-19 07:45:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:41,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585532924] [2023-12-19 07:45:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:41,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:41,933 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:45:41,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 07:45:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:42,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 07:45:42,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19404 trivial. 0 not checked. [2023-12-19 07:45:44,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471370250] [2023-12-19 07:45:44,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585532924] [2023-12-19 07:45:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585532924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184521501] [2023-12-19 07:45:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:45:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:45:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:45:44,807 INFO L87 Difference]: Start difference. First operand 178703 states and 290030 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:45:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:54,136 INFO L93 Difference]: Finished difference Result 535409 states and 869238 transitions. [2023-12-19 07:45:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:45:54,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) Word has length 640 [2023-12-19 07:45:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:55,169 INFO L225 Difference]: With dead ends: 535409 [2023-12-19 07:45:55,169 INFO L226 Difference]: Without dead ends: 357601 [2023-12-19 07:45:55,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:45:55,294 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 214 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:55,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1257 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:45:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357601 states. [2023-12-19 07:46:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357601 to 357221. [2023-12-19 07:46:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357221 states, 334344 states have (on average 1.6119565477472304) internal successors, (538948), 335048 states have internal predecessors, (538948), 19955 states have call successors, (19955), 2921 states have call predecessors, (19955), 2921 states have return successors, (19955), 19251 states have call predecessors, (19955), 19955 states have call successors, (19955) [2023-12-19 07:46:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357221 states to 357221 states and 578858 transitions. [2023-12-19 07:46:09,287 INFO L78 Accepts]: Start accepts. Automaton has 357221 states and 578858 transitions. Word has length 640 [2023-12-19 07:46:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:09,288 INFO L495 AbstractCegarLoop]: Abstraction has 357221 states and 578858 transitions. [2023-12-19 07:46:09,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (99), 1 states have call predecessors, (99), 1 states have return successors, (99), 1 states have call predecessors, (99), 1 states have call successors, (99) [2023-12-19 07:46:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 357221 states and 578858 transitions. [2023-12-19 07:46:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:46:09,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:09,466 INFO L195 NwaCegarLoop]: trace histogram [99, 99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:46:09,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 07:46:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 07:46:09,668 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:09,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1110978487, now seen corresponding path program 1 times [2023-12-19 07:46:09,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197747149] [2023-12-19 07:46:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:09,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661499803] [2023-12-19 07:46:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:09,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:09,716 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:46:09,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 07:46:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:10,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 07:46:10,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 9203 proven. 405 refuted. 0 times theorem prover too weak. 9796 trivial. 0 not checked. [2023-12-19 07:46:11,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19404 backedges. 81 proven. 213 refuted. 0 times theorem prover too weak. 19110 trivial. 0 not checked. [2023-12-19 07:46:12,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:12,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197747149] [2023-12-19 07:46:12,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:12,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661499803] [2023-12-19 07:46:12,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661499803] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:46:12,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:46:12,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-19 07:46:12,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291776768] [2023-12-19 07:46:12,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:46:12,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 07:46:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 07:46:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-12-19 07:46:12,630 INFO L87 Difference]: Start difference. First operand 357221 states and 578858 transitions. Second operand has 19 states, 19 states have (on average 13.31578947368421) internal successors, (253), 19 states have internal predecessors, (253), 4 states have call successors, (170), 3 states have call predecessors, (170), 6 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171)