/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-63.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:44:54,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:44:55,020 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 07:44:55,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:44:55,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:44:55,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:44:55,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:44:55,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:44:55,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:44:55,060 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:44:55,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:44:55,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:44:55,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:44:55,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:44:55,063 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:44:55,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:44:55,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:44:55,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:44:55,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:44:55,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:44:55,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:44:55,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:44:55,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:44:55,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:44:55,066 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:44:55,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:44:55,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:44:55,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:44:55,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:44:55,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:44:55,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:44:55,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:44:55,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:44:55,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:44:55,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:44:55,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:44:55,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:44:55,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:44:55,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:44:55,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:44:55,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:44:55,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:44:55,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:44:55,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:44:55,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:44:55,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:44:55,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:44:55,382 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:44:55,382 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:44:55,383 INFO L431 ainManager$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-63.i [2023-12-19 07:44:56,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:44:56,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:44:56,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-63.i [2023-12-19 07:44:56,975 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec010701/03b7d7b85727420f98c881d75767da73/FLAGc68e703ad [2023-12-19 07:44:56,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec010701/03b7d7b85727420f98c881d75767da73 [2023-12-19 07:44:56,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:44:56,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:44:56,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:44:56,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:44:56,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:44:56,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:44:56" (1/1) ... [2023-12-19 07:44:56,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31335b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:56, skipping insertion in model container [2023-12-19 07:44:56,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:44:56" (1/1) ... [2023-12-19 07:44:57,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:44:57,201 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-63.i[916,929] [2023-12-19 07:44:57,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:44:57,391 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:44:57,402 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-63.i[916,929] [2023-12-19 07:44:57,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:44:57,517 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:44:57,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57 WrapperNode [2023-12-19 07:44:57,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:44:57,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:44:57,519 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:44:57,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:44:57,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,720 INFO L138 Inliner]: procedures = 26, calls = 109, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 913 [2023-12-19 07:44:57,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:44:57,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:44:57,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:44:57,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:44:57,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,808 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 07:44:57,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:44:57,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:44:57,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:44:57,917 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:44:57,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (1/1) ... [2023-12-19 07:44:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:44:57,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:57,951 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 07:44:57,953 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 07:44:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:44:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:44:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:44:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:44:57,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:44:57,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:44:58,147 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:44:58,148 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:44:59,165 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:44:59,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:44:59,217 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:44:59,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:44:59 BoogieIcfgContainer [2023-12-19 07:44:59,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:44:59,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:44:59,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:44:59,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:44:59,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:44:56" (1/3) ... [2023-12-19 07:44:59,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32820153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:44:59, skipping insertion in model container [2023-12-19 07:44:59,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:44:57" (2/3) ... [2023-12-19 07:44:59,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32820153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:44:59, skipping insertion in model container [2023-12-19 07:44:59,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:44:59" (3/3) ... [2023-12-19 07:44:59,225 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-63.i [2023-12-19 07:44:59,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:44:59,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:44:59,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:44:59,301 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;@290faa88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:44:59,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:44:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 237 states have (on average 1.6751054852320675) internal successors, (397), 238 states have internal predecessors, (397), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-19 07:44:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:44:59,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:44:59,340 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:59,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:44:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:44:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -711717560, now seen corresponding path program 1 times [2023-12-19 07:44:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:44:59,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77671041] [2023-12-19 07:44:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:59,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:44:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:44:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:44:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77671041] [2023-12-19 07:44:59,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:44:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631059592] [2023-12-19 07:44:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:44:59,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:44:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:44:59,771 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 07:44:59,781 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 07:45:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:00,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:45:00,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 18050 trivial. 0 not checked. [2023-12-19 07:45:00,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631059592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:00,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:45:00,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37487600] [2023-12-19 07:45:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:00,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:45:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:45:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:45:00,425 INFO L87 Difference]: Start difference. First operand has 336 states, 237 states have (on average 1.6751054852320675) internal successors, (397), 238 states have internal predecessors, (397), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-19 07:45:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:00,525 INFO L93 Difference]: Finished difference Result 668 states and 1270 transitions. [2023-12-19 07:45:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:45:00,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) Word has length 637 [2023-12-19 07:45:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:00,547 INFO L225 Difference]: With dead ends: 668 [2023-12-19 07:45:00,547 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 07:45:00,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 636 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 07:45:00,559 INFO L413 NwaCegarLoop]: 574 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, 574 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 07:45:00,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 07:45:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-12-19 07:45:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 235 states have (on average 1.6382978723404256) internal successors, (385), 235 states have internal predecessors, (385), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-19 07:45:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 577 transitions. [2023-12-19 07:45:00,663 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 577 transitions. Word has length 637 [2023-12-19 07:45:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:00,665 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 577 transitions. [2023-12-19 07:45:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 2 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 2 states have call successors, (96) [2023-12-19 07:45:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 577 transitions. [2023-12-19 07:45:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:00,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:00,685 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:00,707 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 07:45:00,897 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 07:45:00,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:00,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:00,898 INFO L85 PathProgramCache]: Analyzing trace with hash -204243196, now seen corresponding path program 1 times [2023-12-19 07:45:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156556224] [2023-12-19 07:45:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:01,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:01,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985603372] [2023-12-19 07:45:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:01,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:01,086 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 07:45:01,104 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 07:45:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:01,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:01,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:01,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:01,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156556224] [2023-12-19 07:45:01,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985603372] [2023-12-19 07:45:01,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985603372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:01,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84822547] [2023-12-19 07:45:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:01,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:01,596 INFO L87 Difference]: Start difference. First operand 333 states and 577 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:01,677 INFO L93 Difference]: Finished difference Result 666 states and 1155 transitions. [2023-12-19 07:45:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:01,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:01,686 INFO L225 Difference]: With dead ends: 666 [2023-12-19 07:45:01,686 INFO L226 Difference]: Without dead ends: 334 [2023-12-19 07:45:01,687 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 07:45:01,689 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1140 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 07:45:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1140 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-19 07:45:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2023-12-19 07:45:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 236 states have (on average 1.6355932203389831) internal successors, (386), 236 states have internal predecessors, (386), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-19 07:45:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 578 transitions. [2023-12-19 07:45:01,733 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 578 transitions. Word has length 637 [2023-12-19 07:45:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:01,737 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 578 transitions. [2023-12-19 07:45:01,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 578 transitions. [2023-12-19 07:45:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:01,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:01,754 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:01,770 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 07:45:01,963 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 07:45:01,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1056674054, now seen corresponding path program 1 times [2023-12-19 07:45:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:01,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833508519] [2023-12-19 07:45:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:02,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:02,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624188534] [2023-12-19 07:45:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:02,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:02,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:02,084 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 07:45:02,094 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 07:45:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:02,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:02,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:02,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:02,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833508519] [2023-12-19 07:45:02,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:02,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624188534] [2023-12-19 07:45:02,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624188534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:02,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:02,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555999031] [2023-12-19 07:45:02,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:02,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:02,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:02,600 INFO L87 Difference]: Start difference. First operand 334 states and 578 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:02,665 INFO L93 Difference]: Finished difference Result 890 states and 1544 transitions. [2023-12-19 07:45:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:02,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:02,675 INFO L225 Difference]: With dead ends: 890 [2023-12-19 07:45:02,675 INFO L226 Difference]: Without dead ends: 557 [2023-12-19 07:45:02,677 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 07:45:02,678 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 362 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:02,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1125 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-19 07:45:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2023-12-19 07:45:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 413 states have (on average 1.665859564164649) internal successors, (688), 414 states have internal predecessors, (688), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138) [2023-12-19 07:45:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 964 transitions. [2023-12-19 07:45:02,729 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 964 transitions. Word has length 637 [2023-12-19 07:45:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:02,731 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 964 transitions. [2023-12-19 07:45:02,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 964 transitions. [2023-12-19 07:45:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:02,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:02,737 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:02,750 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 07:45:02,947 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 07:45:02,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:02,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:02,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1276718584, now seen corresponding path program 1 times [2023-12-19 07:45:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:02,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989727910] [2023-12-19 07:45:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:02,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:03,036 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306985668] [2023-12-19 07:45:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:03,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:03,038 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 07:45:03,062 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 07:45:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:03,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:03,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:03,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:03,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:03,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989727910] [2023-12-19 07:45:03,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:03,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306985668] [2023-12-19 07:45:03,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306985668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:03,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:03,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:03,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222197804] [2023-12-19 07:45:03,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:03,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:03,555 INFO L87 Difference]: Start difference. First operand 554 states and 964 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:03,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:03,641 INFO L93 Difference]: Finished difference Result 1539 states and 2683 transitions. [2023-12-19 07:45:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:03,650 INFO L225 Difference]: With dead ends: 1539 [2023-12-19 07:45:03,650 INFO L226 Difference]: Without dead ends: 986 [2023-12-19 07:45:03,653 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 07:45:03,655 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 371 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:03,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1477 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-12-19 07:45:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 982. [2023-12-19 07:45:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 763 states have (on average 1.6788990825688073) internal successors, (1281), 766 states have internal predecessors, (1281), 214 states have call successors, (214), 4 states have call predecessors, (214), 4 states have return successors, (214), 211 states have call predecessors, (214), 214 states have call successors, (214) [2023-12-19 07:45:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1709 transitions. [2023-12-19 07:45:03,763 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1709 transitions. Word has length 637 [2023-12-19 07:45:03,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:03,766 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1709 transitions. [2023-12-19 07:45:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1709 transitions. [2023-12-19 07:45:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:03,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:03,772 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:03,788 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 07:45:03,988 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 07:45:03,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:03,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1862994806, now seen corresponding path program 1 times [2023-12-19 07:45:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:03,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577909153] [2023-12-19 07:45:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:03,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:04,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:04,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111610405] [2023-12-19 07:45:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:04,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:04,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:04,061 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 07:45:04,079 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 07:45:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:04,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:04,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:04,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577909153] [2023-12-19 07:45:04,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111610405] [2023-12-19 07:45:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111610405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147507917] [2023-12-19 07:45:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:04,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:04,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:04,562 INFO L87 Difference]: Start difference. First operand 982 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:04,639 INFO L93 Difference]: Finished difference Result 2940 states and 5117 transitions. [2023-12-19 07:45:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:04,651 INFO L225 Difference]: With dead ends: 2940 [2023-12-19 07:45:04,651 INFO L226 Difference]: Without dead ends: 1959 [2023-12-19 07:45:04,654 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 07:45:04,655 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 544 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:04,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1548 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2023-12-19 07:45:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2023-12-19 07:45:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1520 states have (on average 1.6736842105263159) internal successors, (2544), 1526 states have internal predecessors, (2544), 428 states have call successors, (428), 8 states have call predecessors, (428), 8 states have return successors, (428), 422 states have call predecessors, (428), 428 states have call successors, (428) [2023-12-19 07:45:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3400 transitions. [2023-12-19 07:45:04,804 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3400 transitions. Word has length 637 [2023-12-19 07:45:04,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:04,805 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3400 transitions. [2023-12-19 07:45:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3400 transitions. [2023-12-19 07:45:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:04,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:04,812 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:04,824 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 07:45:05,022 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 07:45:05,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:05,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1935381364, now seen corresponding path program 1 times [2023-12-19 07:45:05,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:05,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418750232] [2023-12-19 07:45:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:05,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:05,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348662301] [2023-12-19 07:45:05,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:05,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:05,100 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 07:45:05,121 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 07:45:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:05,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:05,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:05,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418750232] [2023-12-19 07:45:05,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348662301] [2023-12-19 07:45:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348662301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:05,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:05,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986481083] [2023-12-19 07:45:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:05,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:05,624 INFO L87 Difference]: Start difference. First operand 1957 states and 3400 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:05,779 INFO L93 Difference]: Finished difference Result 5845 states and 10150 transitions. [2023-12-19 07:45:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:05,801 INFO L225 Difference]: With dead ends: 5845 [2023-12-19 07:45:05,802 INFO L226 Difference]: Without dead ends: 3889 [2023-12-19 07:45:05,810 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 07:45:05,811 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 554 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:05,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1667 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2023-12-19 07:45:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3855. [2023-12-19 07:45:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 2982 states have (on average 1.6572769953051643) internal successors, (4942), 2994 states have internal predecessors, (4942), 856 states have call successors, (856), 16 states have call predecessors, (856), 16 states have return successors, (856), 844 states have call predecessors, (856), 856 states have call successors, (856) [2023-12-19 07:45:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 6654 transitions. [2023-12-19 07:45:06,112 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 6654 transitions. Word has length 637 [2023-12-19 07:45:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:06,113 INFO L495 AbstractCegarLoop]: Abstraction has 3855 states and 6654 transitions. [2023-12-19 07:45:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 6654 transitions. [2023-12-19 07:45:06,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:06,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:06,122 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:06,134 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 07:45:06,331 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 07:45:06,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:06,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:06,333 INFO L85 PathProgramCache]: Analyzing trace with hash 791985230, now seen corresponding path program 1 times [2023-12-19 07:45:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:06,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165835220] [2023-12-19 07:45:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:06,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778690399] [2023-12-19 07:45:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:06,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:06,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:06,402 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 07:45:06,424 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 07:45:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:06,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:06,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:06,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:06,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165835220] [2023-12-19 07:45:06,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778690399] [2023-12-19 07:45:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778690399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:06,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720021587] [2023-12-19 07:45:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:06,847 INFO L87 Difference]: Start difference. First operand 3855 states and 6654 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:07,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:07,024 INFO L93 Difference]: Finished difference Result 8063 states and 13884 transitions. [2023-12-19 07:45:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:07,051 INFO L225 Difference]: With dead ends: 8063 [2023-12-19 07:45:07,051 INFO L226 Difference]: Without dead ends: 4209 [2023-12-19 07:45:07,068 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 07:45:07,069 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 33 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:07,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1134 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2023-12-19 07:45:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4031. [2023-12-19 07:45:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 3158 states have (on average 1.6510449651678278) internal successors, (5214), 3170 states have internal predecessors, (5214), 856 states have call successors, (856), 16 states have call predecessors, (856), 16 states have return successors, (856), 844 states have call predecessors, (856), 856 states have call successors, (856) [2023-12-19 07:45:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 6926 transitions. [2023-12-19 07:45:07,438 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 6926 transitions. Word has length 637 [2023-12-19 07:45:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:07,439 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 6926 transitions. [2023-12-19 07:45:07,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 6926 transitions. [2023-12-19 07:45:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-12-19 07:45:07,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:07,449 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:07,462 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 07:45:07,659 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 07:45:07,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:07,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -229083124, now seen corresponding path program 1 times [2023-12-19 07:45:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482224914] [2023-12-19 07:45:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:07,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:07,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667402352] [2023-12-19 07:45:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:07,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:07,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:07,749 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 07:45:07,775 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 07:45:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:08,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:08,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:09,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482224914] [2023-12-19 07:45:09,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667402352] [2023-12-19 07:45:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667402352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:45:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370228963] [2023-12-19 07:45:09,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:09,544 INFO L87 Difference]: Start difference. First operand 4031 states and 6926 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:09,745 INFO L93 Difference]: Finished difference Result 10081 states and 17338 transitions. [2023-12-19 07:45:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 637 [2023-12-19 07:45:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:09,801 INFO L225 Difference]: With dead ends: 10081 [2023-12-19 07:45:09,802 INFO L226 Difference]: Without dead ends: 6051 [2023-12-19 07:45:09,821 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 07:45:09,822 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 297 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:09,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2023-12-19 07:45:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 6011. [2023-12-19 07:45:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 4702 states have (on average 1.643130582730753) internal successors, (7726), 4720 states have internal predecessors, (7726), 1284 states have call successors, (1284), 24 states have call predecessors, (1284), 24 states have return successors, (1284), 1266 states have call predecessors, (1284), 1284 states have call successors, (1284) [2023-12-19 07:45:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 10294 transitions. [2023-12-19 07:45:10,393 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 10294 transitions. Word has length 637 [2023-12-19 07:45:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 6011 states and 10294 transitions. [2023-12-19 07:45:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 10294 transitions. [2023-12-19 07:45:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 07:45:10,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:10,406 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:10,418 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 07:45:10,612 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 07:45:10,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:10,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -315337369, now seen corresponding path program 1 times [2023-12-19 07:45:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:10,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286729962] [2023-12-19 07:45:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:10,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708073016] [2023-12-19 07:45:10,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:10,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:10,691 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 07:45:10,701 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 07:45:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:11,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:11,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:12,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286729962] [2023-12-19 07:45:12,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708073016] [2023-12-19 07:45:12,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708073016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:12,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:12,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:12,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297856230] [2023-12-19 07:45:12,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:12,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:45:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:45:12,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:45:12,524 INFO L87 Difference]: Start difference. First operand 6011 states and 10294 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:13,256 INFO L93 Difference]: Finished difference Result 22061 states and 37805 transitions. [2023-12-19 07:45:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:45:13,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 638 [2023-12-19 07:45:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:13,323 INFO L225 Difference]: With dead ends: 22061 [2023-12-19 07:45:13,324 INFO L226 Difference]: Without dead ends: 16051 [2023-12-19 07:45:13,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 635 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 07:45:13,345 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 839 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:13,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1512 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:45:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16051 states. [2023-12-19 07:45:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16051 to 15715. [2023-12-19 07:45:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15715 states, 12226 states have (on average 1.6307868477016194) internal successors, (19938), 12274 states have internal predecessors, (19938), 3424 states have call successors, (3424), 64 states have call predecessors, (3424), 64 states have return successors, (3424), 3376 states have call predecessors, (3424), 3424 states have call successors, (3424) [2023-12-19 07:45:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15715 states to 15715 states and 26786 transitions. [2023-12-19 07:45:14,617 INFO L78 Accepts]: Start accepts. Automaton has 15715 states and 26786 transitions. Word has length 638 [2023-12-19 07:45:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 15715 states and 26786 transitions. [2023-12-19 07:45:14,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 15715 states and 26786 transitions. [2023-12-19 07:45:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 07:45:14,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:14,637 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:14,650 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 07:45:14,848 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 07:45:14,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:14,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash -548271133, now seen corresponding path program 1 times [2023-12-19 07:45:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696489023] [2023-12-19 07:45:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:14,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784623143] [2023-12-19 07:45:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:14,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:14,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:14,923 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 07:45:14,948 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 07:45:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:15,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:15,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 8835 proven. 171 refuted. 0 times theorem prover too weak. 9234 trivial. 0 not checked. [2023-12-19 07:45:15,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 114 proven. 171 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-19 07:45:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696489023] [2023-12-19 07:45:16,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784623143] [2023-12-19 07:45:16,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784623143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:16,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:45:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533013576] [2023-12-19 07:45:16,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:16,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:16,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:16,328 INFO L87 Difference]: Start difference. First operand 15715 states and 26786 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-19 07:45:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:17,421 INFO L93 Difference]: Finished difference Result 24962 states and 42150 transitions. [2023-12-19 07:45:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:17,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 638 [2023-12-19 07:45:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:17,460 INFO L225 Difference]: With dead ends: 24962 [2023-12-19 07:45:17,460 INFO L226 Difference]: Without dead ends: 9248 [2023-12-19 07:45:17,497 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 07:45:17,498 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 703 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:17,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1297 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 07:45:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9248 states. [2023-12-19 07:45:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9248 to 9149. [2023-12-19 07:45:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9149 states, 6806 states have (on average 1.580664119894211) internal successors, (10758), 6823 states have internal predecessors, (10758), 2246 states have call successors, (2246), 96 states have call predecessors, (2246), 96 states have return successors, (2246), 2229 states have call predecessors, (2246), 2246 states have call successors, (2246) [2023-12-19 07:45:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9149 states to 9149 states and 15250 transitions. [2023-12-19 07:45:18,198 INFO L78 Accepts]: Start accepts. Automaton has 9149 states and 15250 transitions. Word has length 638 [2023-12-19 07:45:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:18,200 INFO L495 AbstractCegarLoop]: Abstraction has 9149 states and 15250 transitions. [2023-12-19 07:45:18,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-12-19 07:45:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9149 states and 15250 transitions. [2023-12-19 07:45:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-12-19 07:45:18,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:18,213 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:18,228 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 07:45:18,424 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 07:45:18,426 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:18,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:18,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1260257574, now seen corresponding path program 1 times [2023-12-19 07:45:18,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747584693] [2023-12-19 07:45:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:18,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:18,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870121176] [2023-12-19 07:45:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:18,494 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 07:45:18,520 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 07:45:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:18,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:18,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9083 proven. 159 refuted. 0 times theorem prover too weak. 8998 trivial. 0 not checked. [2023-12-19 07:45:19,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 126 proven. 159 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-19 07:45:19,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747584693] [2023-12-19 07:45:19,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870121176] [2023-12-19 07:45:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870121176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:19,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:45:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452020417] [2023-12-19 07:45:19,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:19,942 INFO L87 Difference]: Start difference. First operand 9149 states and 15250 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-19 07:45:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:20,958 INFO L93 Difference]: Finished difference Result 14714 states and 24440 transitions. [2023-12-19 07:45:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:20,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 640 [2023-12-19 07:45:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:20,981 INFO L225 Difference]: With dead ends: 14714 [2023-12-19 07:45:20,981 INFO L226 Difference]: Without dead ends: 5628 [2023-12-19 07:45:20,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1282 GetRequests, 1272 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 07:45:20,998 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 704 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:20,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1372 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 07:45:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2023-12-19 07:45:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5561. [2023-12-19 07:45:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 3916 states have (on average 1.5413687436159347) internal successors, (6036), 3917 states have internal predecessors, (6036), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 9192 transitions. [2023-12-19 07:45:21,522 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 9192 transitions. Word has length 640 [2023-12-19 07:45:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:21,523 INFO L495 AbstractCegarLoop]: Abstraction has 5561 states and 9192 transitions. [2023-12-19 07:45:21,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-12-19 07:45:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 9192 transitions. [2023-12-19 07:45:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2023-12-19 07:45:21,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:21,532 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:21,551 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 07:45:21,744 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 07:45:21,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash -775325901, now seen corresponding path program 1 times [2023-12-19 07:45:21,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255432927] [2023-12-19 07:45:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:21,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:21,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217513227] [2023-12-19 07:45:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:21,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:21,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:21,806 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 07:45:21,830 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 07:45:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:22,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:45:22,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:22,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:22,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255432927] [2023-12-19 07:45:22,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:22,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217513227] [2023-12-19 07:45:22,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217513227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:22,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:22,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:45:22,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424759404] [2023-12-19 07:45:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:22,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:45:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:45:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:45:22,936 INFO L87 Difference]: Start difference. First operand 5561 states and 9192 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:24,291 INFO L93 Difference]: Finished difference Result 16417 states and 27086 transitions. [2023-12-19 07:45:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:45:24,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 641 [2023-12-19 07:45:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:24,337 INFO L225 Difference]: With dead ends: 16417 [2023-12-19 07:45:24,338 INFO L226 Difference]: Without dead ends: 10933 [2023-12-19 07:45:24,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:45:24,357 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 565 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:24,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 4503 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:45:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10933 states. [2023-12-19 07:45:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 5753. [2023-12-19 07:45:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5753 states, 4108 states have (on average 1.5355404089581304) internal successors, (6308), 4109 states have internal predecessors, (6308), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5753 states to 5753 states and 9464 transitions. [2023-12-19 07:45:25,066 INFO L78 Accepts]: Start accepts. Automaton has 5753 states and 9464 transitions. Word has length 641 [2023-12-19 07:45:25,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:25,067 INFO L495 AbstractCegarLoop]: Abstraction has 5753 states and 9464 transitions. [2023-12-19 07:45:25,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5753 states and 9464 transitions. [2023-12-19 07:45:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 07:45:25,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:25,075 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:25,089 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 07:45:25,288 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 07:45:25,289 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:25,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1342518250, now seen corresponding path program 1 times [2023-12-19 07:45:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178581762] [2023-12-19 07:45:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:25,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:25,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822714852] [2023-12-19 07:45:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:25,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:25,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:25,355 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 07:45:25,374 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 07:45:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:25,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:45:25,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:25,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178581762] [2023-12-19 07:45:25,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822714852] [2023-12-19 07:45:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822714852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864456358] [2023-12-19 07:45:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:25,895 INFO L87 Difference]: Start difference. First operand 5753 states and 9464 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:26,925 INFO L93 Difference]: Finished difference Result 16625 states and 27358 transitions. [2023-12-19 07:45:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 642 [2023-12-19 07:45:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:26,971 INFO L225 Difference]: With dead ends: 16625 [2023-12-19 07:45:26,971 INFO L226 Difference]: Without dead ends: 10949 [2023-12-19 07:45:26,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 640 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 07:45:26,995 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 548 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:26,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1129 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10949 states. [2023-12-19 07:45:27,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10949 to 5897. [2023-12-19 07:45:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 4252 states have (on average 1.528692380056444) internal successors, (6500), 4253 states have internal predecessors, (6500), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 9656 transitions. [2023-12-19 07:45:27,934 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 9656 transitions. Word has length 642 [2023-12-19 07:45:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:27,937 INFO L495 AbstractCegarLoop]: Abstraction has 5897 states and 9656 transitions. [2023-12-19 07:45:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:27,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 9656 transitions. [2023-12-19 07:45:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 07:45:27,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:27,946 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:27,956 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 07:45:28,156 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 07:45:28,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:28,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash -860092095, now seen corresponding path program 1 times [2023-12-19 07:45:28,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:28,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261009738] [2023-12-19 07:45:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:28,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:28,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227486175] [2023-12-19 07:45:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:28,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:28,232 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 07:45:28,240 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 07:45:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:28,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:45:28,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:28,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:28,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261009738] [2023-12-19 07:45:28,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227486175] [2023-12-19 07:45:28,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227486175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:28,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:28,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269976868] [2023-12-19 07:45:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:28,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:28,745 INFO L87 Difference]: Start difference. First operand 5897 states and 9656 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:29,767 INFO L93 Difference]: Finished difference Result 16753 states and 27518 transitions. [2023-12-19 07:45:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:29,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 642 [2023-12-19 07:45:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:29,812 INFO L225 Difference]: With dead ends: 16753 [2023-12-19 07:45:29,813 INFO L226 Difference]: Without dead ends: 10933 [2023-12-19 07:45:29,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 640 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 07:45:29,833 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 546 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1645 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10933 states. [2023-12-19 07:45:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 5881. [2023-12-19 07:45:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 4236 states have (on average 1.5231350330500473) internal successors, (6452), 4237 states have internal predecessors, (6452), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 9608 transitions. [2023-12-19 07:45:30,619 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 9608 transitions. Word has length 642 [2023-12-19 07:45:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:30,621 INFO L495 AbstractCegarLoop]: Abstraction has 5881 states and 9608 transitions. [2023-12-19 07:45:30,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 9608 transitions. [2023-12-19 07:45:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 07:45:30,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:30,630 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:30,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 07:45:30,842 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 07:45:30,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:30,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1388923697, now seen corresponding path program 1 times [2023-12-19 07:45:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:30,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021035742] [2023-12-19 07:45:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:30,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:30,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:30,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394032491] [2023-12-19 07:45:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:30,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:30,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:30,908 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 07:45:30,929 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 07:45:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:31,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 07:45:31,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:32,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021035742] [2023-12-19 07:45:32,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394032491] [2023-12-19 07:45:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394032491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:32,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 07:45:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525208770] [2023-12-19 07:45:32,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:45:32,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:45:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:45:32,315 INFO L87 Difference]: Start difference. First operand 5881 states and 9608 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:32,972 INFO L93 Difference]: Finished difference Result 12555 states and 20206 transitions. [2023-12-19 07:45:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 07:45:32,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 642 [2023-12-19 07:45:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:32,998 INFO L225 Difference]: With dead ends: 12555 [2023-12-19 07:45:32,999 INFO L226 Difference]: Without dead ends: 6751 [2023-12-19 07:45:33,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-19 07:45:33,017 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 79 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:33,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2292 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 07:45:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2023-12-19 07:45:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 5881. [2023-12-19 07:45:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 4236 states have (on average 1.5231350330500473) internal successors, (6452), 4237 states have internal predecessors, (6452), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 9608 transitions. [2023-12-19 07:45:33,785 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 9608 transitions. Word has length 642 [2023-12-19 07:45:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 5881 states and 9608 transitions. [2023-12-19 07:45:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 9608 transitions. [2023-12-19 07:45:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 07:45:33,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:33,792 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:33,800 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 07:45:33,993 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 07:45:33,993 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:33,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1800541901, now seen corresponding path program 1 times [2023-12-19 07:45:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658285755] [2023-12-19 07:45:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:34,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:34,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303690537] [2023-12-19 07:45:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:34,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:34,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:34,058 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 07:45:34,084 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 07:45:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:34,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:34,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:34,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658285755] [2023-12-19 07:45:34,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:34,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303690537] [2023-12-19 07:45:34,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303690537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:34,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:34,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:34,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832080340] [2023-12-19 07:45:34,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:34,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:34,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:34,589 INFO L87 Difference]: Start difference. First operand 5881 states and 9608 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:35,007 INFO L93 Difference]: Finished difference Result 11895 states and 19372 transitions. [2023-12-19 07:45:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 642 [2023-12-19 07:45:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:35,027 INFO L225 Difference]: With dead ends: 11895 [2023-12-19 07:45:35,028 INFO L226 Difference]: Without dead ends: 6091 [2023-12-19 07:45:35,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 640 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 07:45:35,044 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 26 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:35,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1147 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2023-12-19 07:45:35,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 5849. [2023-12-19 07:45:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5849 states, 4204 states have (on average 1.5042816365366318) internal successors, (6324), 4205 states have internal predecessors, (6324), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 9480 transitions. [2023-12-19 07:45:35,555 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 9480 transitions. Word has length 642 [2023-12-19 07:45:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:35,555 INFO L495 AbstractCegarLoop]: Abstraction has 5849 states and 9480 transitions. [2023-12-19 07:45:35,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:35,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 9480 transitions. [2023-12-19 07:45:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:35,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:35,563 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:35,571 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 07:45:35,764 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 07:45:35,764 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:35,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 311308844, now seen corresponding path program 1 times [2023-12-19 07:45:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236510764] [2023-12-19 07:45:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:35,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709911120] [2023-12-19 07:45:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:35,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:35,817 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 07:45:35,841 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 07:45:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:36,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 07:45:36,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:36,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:36,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236510764] [2023-12-19 07:45:36,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709911120] [2023-12-19 07:45:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709911120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:36,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:45:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657569122] [2023-12-19 07:45:36,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:45:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:45:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:45:36,398 INFO L87 Difference]: Start difference. First operand 5849 states and 9480 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:37,882 INFO L93 Difference]: Finished difference Result 16833 states and 27406 transitions. [2023-12-19 07:45:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 07:45:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 643 [2023-12-19 07:45:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:37,917 INFO L225 Difference]: With dead ends: 16833 [2023-12-19 07:45:37,917 INFO L226 Difference]: Without dead ends: 11061 [2023-12-19 07:45:37,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:45:37,935 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 550 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4528 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:37,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4528 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:45:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2023-12-19 07:45:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 6009. [2023-12-19 07:45:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 4364 states have (on average 1.5004582951420715) internal successors, (6548), 4365 states have internal predecessors, (6548), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 9704 transitions. [2023-12-19 07:45:38,641 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 9704 transitions. Word has length 643 [2023-12-19 07:45:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:38,642 INFO L495 AbstractCegarLoop]: Abstraction has 6009 states and 9704 transitions. [2023-12-19 07:45:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 9704 transitions. [2023-12-19 07:45:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:38,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:38,651 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:38,660 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 07:45:38,859 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 07:45:38,860 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:38,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash 569474282, now seen corresponding path program 1 times [2023-12-19 07:45:38,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:38,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504900500] [2023-12-19 07:45:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:38,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:38,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308144284] [2023-12-19 07:45:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:38,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:38,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:38,924 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 07:45:38,928 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 07:45:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:39,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:45:39,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:39,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504900500] [2023-12-19 07:45:39,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308144284] [2023-12-19 07:45:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308144284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:39,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:45:39,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540883325] [2023-12-19 07:45:39,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:39,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:39,435 INFO L87 Difference]: Start difference. First operand 6009 states and 9704 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:40,387 INFO L93 Difference]: Finished difference Result 17585 states and 28398 transitions. [2023-12-19 07:45:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 643 [2023-12-19 07:45:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:40,424 INFO L225 Difference]: With dead ends: 17585 [2023-12-19 07:45:40,424 INFO L226 Difference]: Without dead ends: 11653 [2023-12-19 07:45:40,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 641 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 07:45:40,441 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 553 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:40,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1134 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:40,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11653 states. [2023-12-19 07:45:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11653 to 6233. [2023-12-19 07:45:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 4588 states have (on average 1.4864864864864864) internal successors, (6820), 4589 states have internal predecessors, (6820), 1578 states have call successors, (1578), 66 states have call predecessors, (1578), 66 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 9976 transitions. [2023-12-19 07:45:41,169 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 9976 transitions. Word has length 643 [2023-12-19 07:45:41,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:41,169 INFO L495 AbstractCegarLoop]: Abstraction has 6233 states and 9976 transitions. [2023-12-19 07:45:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 9976 transitions. [2023-12-19 07:45:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:41,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:41,178 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:41,189 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 07:45:41,389 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 07:45:41,390 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:41,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:41,391 INFO L85 PathProgramCache]: Analyzing trace with hash 626732584, now seen corresponding path program 1 times [2023-12-19 07:45:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464045816] [2023-12-19 07:45:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:41,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:41,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297780866] [2023-12-19 07:45:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:41,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:41,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:41,441 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 07:45:41,474 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 07:45:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:41,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:41,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 6863 proven. 69 refuted. 0 times theorem prover too weak. 11308 trivial. 0 not checked. [2023-12-19 07:45:42,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 216 proven. 69 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-19 07:45:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464045816] [2023-12-19 07:45:42,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297780866] [2023-12-19 07:45:42,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297780866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:42,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:45:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990708357] [2023-12-19 07:45:42,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:42,506 INFO L87 Difference]: Start difference. First operand 6233 states and 9976 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-19 07:45:43,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:43,440 INFO L93 Difference]: Finished difference Result 12551 states and 19981 transitions. [2023-12-19 07:45:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:43,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) Word has length 643 [2023-12-19 07:45:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:43,456 INFO L225 Difference]: With dead ends: 12551 [2023-12-19 07:45:43,456 INFO L226 Difference]: Without dead ends: 6395 [2023-12-19 07:45:43,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1278 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 07:45:43,468 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 664 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:43,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1198 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:45:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6395 states. [2023-12-19 07:45:43,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6395 to 6297. [2023-12-19 07:45:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 4636 states have (on average 1.4779982743744609) internal successors, (6852), 4637 states have internal predecessors, (6852), 1578 states have call successors, (1578), 82 states have call predecessors, (1578), 82 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 10008 transitions. [2023-12-19 07:45:44,019 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 10008 transitions. Word has length 643 [2023-12-19 07:45:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:44,020 INFO L495 AbstractCegarLoop]: Abstraction has 6297 states and 10008 transitions. [2023-12-19 07:45:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (119), 2 states have call predecessors, (119), 4 states have return successors, (120), 2 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-19 07:45:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 10008 transitions. [2023-12-19 07:45:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:44,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:44,028 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:44,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:44,228 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 07:45:44,229 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:44,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -745074714, now seen corresponding path program 1 times [2023-12-19 07:45:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385313897] [2023-12-19 07:45:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:44,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916842131] [2023-12-19 07:45:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:44,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:44,329 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 07:45:44,334 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 07:45:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:44,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:45:44,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 6459 proven. 63 refuted. 0 times theorem prover too weak. 11718 trivial. 0 not checked. [2023-12-19 07:45:45,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:45:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 222 proven. 63 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-19 07:45:45,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:45,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385313897] [2023-12-19 07:45:45,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:45,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916842131] [2023-12-19 07:45:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916842131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:45:45,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:45:45,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:45:45,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288977327] [2023-12-19 07:45:45,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:45:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:45:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:45,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:45:45,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:45:45,405 INFO L87 Difference]: Start difference. First operand 6297 states and 10008 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-19 07:45:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:46,517 INFO L93 Difference]: Finished difference Result 12711 states and 20077 transitions. [2023-12-19 07:45:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:45:46,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 643 [2023-12-19 07:45:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:46,537 INFO L225 Difference]: With dead ends: 12711 [2023-12-19 07:45:46,537 INFO L226 Difference]: Without dead ends: 6491 [2023-12-19 07:45:46,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1278 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 07:45:46,555 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 664 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:46,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1187 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:45:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2023-12-19 07:45:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 6361. [2023-12-19 07:45:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6361 states, 4684 states have (on average 1.4696840307429548) internal successors, (6884), 4685 states have internal predecessors, (6884), 1578 states have call successors, (1578), 98 states have call predecessors, (1578), 98 states have return successors, (1578), 1577 states have call predecessors, (1578), 1578 states have call successors, (1578) [2023-12-19 07:45:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6361 states to 6361 states and 10040 transitions. [2023-12-19 07:45:47,160 INFO L78 Accepts]: Start accepts. Automaton has 6361 states and 10040 transitions. Word has length 643 [2023-12-19 07:45:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:47,160 INFO L495 AbstractCegarLoop]: Abstraction has 6361 states and 10040 transitions. [2023-12-19 07:45:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-12-19 07:45:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 6361 states and 10040 transitions. [2023-12-19 07:45:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:47,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:47,167 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:47,177 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 07:45:47,368 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 07:45:47,368 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:47,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1704525416, now seen corresponding path program 1 times [2023-12-19 07:45:47,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:47,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484820604] [2023-12-19 07:45:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:47,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:47,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:47,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222719753] [2023-12-19 07:45:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:47,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:47,427 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 07:45:47,438 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 07:45:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:47,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:45:47,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:48,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484820604] [2023-12-19 07:45:48,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:48,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222719753] [2023-12-19 07:45:48,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222719753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:48,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:48,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 07:45:48,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823764066] [2023-12-19 07:45:48,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:48,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 07:45:48,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:48,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 07:45:48,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:45:48,257 INFO L87 Difference]: Start difference. First operand 6361 states and 10040 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:51,378 INFO L93 Difference]: Finished difference Result 26325 states and 40068 transitions. [2023-12-19 07:45:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:45:51,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 643 [2023-12-19 07:45:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:51,436 INFO L225 Difference]: With dead ends: 26325 [2023-12-19 07:45:51,436 INFO L226 Difference]: Without dead ends: 20041 [2023-12-19 07:45:51,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:45:51,458 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1751 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:51,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 2047 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [801 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 07:45:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20041 states. [2023-12-19 07:45:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20041 to 13020. [2023-12-19 07:45:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13020 states, 9747 states have (on average 1.4339796860572485) internal successors, (13977), 9772 states have internal predecessors, (13977), 3068 states have call successors, (3068), 204 states have call predecessors, (3068), 204 states have return successors, (3068), 3043 states have call predecessors, (3068), 3068 states have call successors, (3068) [2023-12-19 07:45:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 20113 transitions. [2023-12-19 07:45:53,538 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 20113 transitions. Word has length 643 [2023-12-19 07:45:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:45:53,539 INFO L495 AbstractCegarLoop]: Abstraction has 13020 states and 20113 transitions. [2023-12-19 07:45:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 20113 transitions. [2023-12-19 07:45:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:45:53,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:45:53,554 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:53,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 07:45:53,765 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 07:45:53,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:45:53,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:45:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2098892202, now seen corresponding path program 1 times [2023-12-19 07:45:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:45:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777480707] [2023-12-19 07:45:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:45:53,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:45:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093781463] [2023-12-19 07:45:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:45:53,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:45:53,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:45:53,882 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 07:45:53,932 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 07:45:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:45:54,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 07:45:54,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:45:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18240 trivial. 0 not checked. [2023-12-19 07:45:54,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:45:54,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:45:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777480707] [2023-12-19 07:45:54,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:45:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093781463] [2023-12-19 07:45:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093781463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:45:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:45:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:45:54,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611025931] [2023-12-19 07:45:54,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:45:54,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:45:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:45:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:45:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:45:54,994 INFO L87 Difference]: Start difference. First operand 13020 states and 20113 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:45:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:45:57,311 INFO L93 Difference]: Finished difference Result 38884 states and 60083 transitions. [2023-12-19 07:45:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:45:57,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) Word has length 643 [2023-12-19 07:45:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:45:57,378 INFO L225 Difference]: With dead ends: 38884 [2023-12-19 07:45:57,378 INFO L226 Difference]: Without dead ends: 25952 [2023-12-19 07:45:57,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 641 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 07:45:57,403 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 281 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:45:57,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1100 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:45:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25952 states. [2023-12-19 07:46:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25952 to 25950. [2023-12-19 07:46:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25950 states, 19453 states have (on average 1.4340718655220275) internal successors, (27897), 19502 states have internal predecessors, (27897), 6092 states have call successors, (6092), 404 states have call predecessors, (6092), 404 states have return successors, (6092), 6043 states have call predecessors, (6092), 6092 states have call successors, (6092) [2023-12-19 07:46:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25950 states to 25950 states and 40081 transitions. [2023-12-19 07:46:00,104 INFO L78 Accepts]: Start accepts. Automaton has 25950 states and 40081 transitions. Word has length 643 [2023-12-19 07:46:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:46:00,104 INFO L495 AbstractCegarLoop]: Abstraction has 25950 states and 40081 transitions. [2023-12-19 07:46:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 1 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 1 states have call predecessors, (96), 1 states have call successors, (96) [2023-12-19 07:46:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 25950 states and 40081 transitions. [2023-12-19 07:46:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-12-19 07:46:00,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:46:00,123 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:00,131 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 07:46:00,324 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 07:46:00,324 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:46:00,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:46:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash 187849644, now seen corresponding path program 1 times [2023-12-19 07:46:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:46:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840134637] [2023-12-19 07:46:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:46:00,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:46:00,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290735217] [2023-12-19 07:46:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:46:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:46:00,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:46:00,374 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 07:46:00,381 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 07:46:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:46:00,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 07:46:00,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:46:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 9740 proven. 255 refuted. 0 times theorem prover too weak. 8245 trivial. 0 not checked. [2023-12-19 07:46:01,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:46:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18240 backedges. 150 proven. 135 refuted. 0 times theorem prover too weak. 17955 trivial. 0 not checked. [2023-12-19 07:46:03,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:46:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840134637] [2023-12-19 07:46:03,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:46:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290735217] [2023-12-19 07:46:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290735217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:46:03,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:46:03,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2023-12-19 07:46:03,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530919864] [2023-12-19 07:46:03,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:46:03,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 07:46:03,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:46:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 07:46:03,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-12-19 07:46:03,784 INFO L87 Difference]: Start difference. First operand 25950 states and 40081 transitions. Second operand has 28 states, 28 states have (on average 10.678571428571429) internal successors, (299), 28 states have internal predecessors, (299), 4 states have call successors, (141), 3 states have call predecessors, (141), 6 states have return successors, (142), 4 states have call predecessors, (142), 4 states have call successors, (142)