/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-250_file-21.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:47:47,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:47:47,916 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:47:47,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:47:47,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:47:47,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:47:47,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:47:47,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:47:47,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:47:47,945 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:47:47,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:47:47,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:47:47,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:47:47,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:47:47,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:47:47,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:47:47,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:47:47,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:47:47,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:47:47,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:47:47,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:47:47,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:47:47,950 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:47:47,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:47:47,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:47:47,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:47:47,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:47:47,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:47,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:47:47,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:47:47,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:47:47,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:47:48,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:47:48,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:47:48,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:47:48,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:47:48,175 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:47:48,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2023-12-15 19:47:49,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:47:49,399 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:47:49,399 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2023-12-15 19:47:49,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa23ed4c/e152829e859849bd8baa8f668c6f13b8/FLAG904d3884c [2023-12-15 19:47:49,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa23ed4c/e152829e859849bd8baa8f668c6f13b8 [2023-12-15 19:47:49,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:47:49,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:47:49,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:49,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:47:49,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:47:49,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d60d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49, skipping insertion in model container [2023-12-15 19:47:49,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:47:49,592 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-250_file-21.i[916,929] [2023-12-15 19:47:49,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:49,747 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:47:49,756 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-250_file-21.i[916,929] [2023-12-15 19:47:49,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:47:49,820 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:47:49,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49 WrapperNode [2023-12-15 19:47:49,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:47:49,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:49,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:47:49,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:47:49,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,904 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 682 [2023-12-15 19:47:49,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:47:49,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:47:49,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:47:49,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:47:49,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,918 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,940 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]. [2023-12-15 19:47:49,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:47:49,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:47:49,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:47:49,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:47:49,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (1/1) ... [2023-12-15 19:47:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:47:49,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:50,007 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) [2023-12-15 19:47:50,028 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 [2023-12-15 19:47:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:47:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:47:50,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:47:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:47:50,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:47:50,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:47:50,150 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:47:50,152 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:47:50,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:47:50,700 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:47:50,701 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:47:50,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:50 BoogieIcfgContainer [2023-12-15 19:47:50,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:47:50,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:47:50,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:47:50,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:47:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:47:49" (1/3) ... [2023-12-15 19:47:50,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22abc010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:50, skipping insertion in model container [2023-12-15 19:47:50,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:47:49" (2/3) ... [2023-12-15 19:47:50,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22abc010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:47:50, skipping insertion in model container [2023-12-15 19:47:50,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:47:50" (3/3) ... [2023-12-15 19:47:50,706 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-21.i [2023-12-15 19:47:50,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:47:50,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:47:50,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:47:50,772 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;@13adef7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:47:50,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:47:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 163 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:47:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:50,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:50,804 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:50,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:50,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:50,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1590843507, now seen corresponding path program 1 times [2023-12-15 19:47:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:50,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893208911] [2023-12-15 19:47:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:50,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893208911] [2023-12-15 19:47:51,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:47:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691098159] [2023-12-15 19:47:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:51,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:51,158 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) [2023-12-15 19:47:51,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:47:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:51,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:47:51,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2023-12-15 19:47:51,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:51,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691098159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:51,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:51,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:47:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335032949] [2023-12-15 19:47:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:47:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:47:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:47:51,540 INFO L87 Difference]: Start difference. First operand has 251 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 163 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:47:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:51,585 INFO L93 Difference]: Finished difference Result 490 states and 927 transitions. [2023-12-15 19:47:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:47:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 531 [2023-12-15 19:47:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:51,602 INFO L225 Difference]: With dead ends: 490 [2023-12-15 19:47:51,602 INFO L226 Difference]: Without dead ends: 240 [2023-12-15 19:47:51,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:47:51,613 INFO L413 NwaCegarLoop]: 404 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, 404 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 [2023-12-15 19:47:51,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 404 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-15 19:47:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2023-12-15 19:47:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 152 states have (on average 1.5460526315789473) internal successors, (235), 152 states have internal predecessors, (235), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:47:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 407 transitions. [2023-12-15 19:47:51,682 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 407 transitions. Word has length 531 [2023-12-15 19:47:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:51,682 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 407 transitions. [2023-12-15 19:47:51,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:47:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 407 transitions. [2023-12-15 19:47:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:51,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:51,699 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:51,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:47:51,904 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 [2023-12-15 19:47:51,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:51,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1750036957, now seen corresponding path program 1 times [2023-12-15 19:47:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862371105] [2023-12-15 19:47:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:52,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756314236] [2023-12-15 19:47:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:52,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:52,076 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) [2023-12-15 19:47:52,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:47:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:52,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:52,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:47:52,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:52,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862371105] [2023-12-15 19:47:52,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756314236] [2023-12-15 19:47:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756314236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:52,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:52,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677250822] [2023-12-15 19:47:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:52,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:52,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:52,467 INFO L87 Difference]: Start difference. First operand 240 states and 407 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:52,550 INFO L93 Difference]: Finished difference Result 618 states and 1049 transitions. [2023-12-15 19:47:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:52,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 531 [2023-12-15 19:47:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:52,559 INFO L225 Difference]: With dead ends: 618 [2023-12-15 19:47:52,559 INFO L226 Difference]: Without dead ends: 379 [2023-12-15 19:47:52,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:52,562 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 223 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 880 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-15 19:47:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2023-12-15 19:47:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 251 states have (on average 1.5776892430278884) internal successors, (396), 252 states have internal predecessors, (396), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-15 19:47:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 640 transitions. [2023-12-15 19:47:52,591 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 640 transitions. Word has length 531 [2023-12-15 19:47:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:52,592 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 640 transitions. [2023-12-15 19:47:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 640 transitions. [2023-12-15 19:47:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:52,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:52,596 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:52,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:52,803 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 [2023-12-15 19:47:52,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:52,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1727404703, now seen corresponding path program 1 times [2023-12-15 19:47:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:52,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611156446] [2023-12-15 19:47:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:52,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911240844] [2023-12-15 19:47:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:52,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:52,870 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) [2023-12-15 19:47:52,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:47:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:53,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:53,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:47:53,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:53,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:53,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611156446] [2023-12-15 19:47:53,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:53,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911240844] [2023-12-15 19:47:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911240844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:53,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:53,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061641542] [2023-12-15 19:47:53,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:53,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:53,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:53,623 INFO L87 Difference]: Start difference. First operand 376 states and 640 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:53,802 INFO L93 Difference]: Finished difference Result 1267 states and 2158 transitions. [2023-12-15 19:47:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:47:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 531 [2023-12-15 19:47:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:53,809 INFO L225 Difference]: With dead ends: 1267 [2023-12-15 19:47:53,810 INFO L226 Difference]: Without dead ends: 892 [2023-12-15 19:47:53,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:53,813 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 480 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:53,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1230 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:47:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2023-12-15 19:47:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 767. [2023-12-15 19:47:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 518 states have (on average 1.5868725868725868) internal successors, (822), 520 states have internal predecessors, (822), 244 states have call successors, (244), 4 states have call predecessors, (244), 4 states have return successors, (244), 242 states have call predecessors, (244), 244 states have call successors, (244) [2023-12-15 19:47:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1310 transitions. [2023-12-15 19:47:53,865 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1310 transitions. Word has length 531 [2023-12-15 19:47:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:53,865 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1310 transitions. [2023-12-15 19:47:53,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1310 transitions. [2023-12-15 19:47:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:53,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:53,869 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:53,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:54,076 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 [2023-12-15 19:47:54,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:54,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:54,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1998183451, now seen corresponding path program 1 times [2023-12-15 19:47:54,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284641379] [2023-12-15 19:47:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:54,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:54,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781418944] [2023-12-15 19:47:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:54,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:54,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:54,175 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) [2023-12-15 19:47:54,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:47:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:54,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:47:54,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:47:54,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284641379] [2023-12-15 19:47:54,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781418944] [2023-12-15 19:47:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781418944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164749797] [2023-12-15 19:47:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:47:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:47:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:54,454 INFO L87 Difference]: Start difference. First operand 767 states and 1310 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:54,504 INFO L93 Difference]: Finished difference Result 2037 states and 3490 transitions. [2023-12-15 19:47:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:54,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 531 [2023-12-15 19:47:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:54,510 INFO L225 Difference]: With dead ends: 2037 [2023-12-15 19:47:54,510 INFO L226 Difference]: Without dead ends: 1271 [2023-12-15 19:47:54,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:47:54,512 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 201 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 827 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 [2023-12-15 19:47:54,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 827 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2023-12-15 19:47:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1265. [2023-12-15 19:47:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 924 states have (on average 1.6233766233766234) internal successors, (1500), 930 states have internal predecessors, (1500), 332 states have call successors, (332), 8 states have call predecessors, (332), 8 states have return successors, (332), 326 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-15 19:47:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2164 transitions. [2023-12-15 19:47:54,572 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2164 transitions. Word has length 531 [2023-12-15 19:47:54,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:54,573 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 2164 transitions. [2023-12-15 19:47:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2164 transitions. [2023-12-15 19:47:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:54,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:54,577 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:54,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:54,783 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 [2023-12-15 19:47:54,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:54,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:54,784 INFO L85 PathProgramCache]: Analyzing trace with hash 409835549, now seen corresponding path program 1 times [2023-12-15 19:47:54,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:54,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416087592] [2023-12-15 19:47:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:54,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:54,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407012610] [2023-12-15 19:47:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:54,832 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) [2023-12-15 19:47:54,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:47:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:55,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:47:55,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:47:55,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416087592] [2023-12-15 19:47:55,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:55,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407012610] [2023-12-15 19:47:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407012610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:55,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474523724] [2023-12-15 19:47:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:55,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:55,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:55,528 INFO L87 Difference]: Start difference. First operand 1265 states and 2164 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:55,605 INFO L93 Difference]: Finished difference Result 2533 states and 4332 transitions. [2023-12-15 19:47:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:47:55,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 531 [2023-12-15 19:47:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:55,612 INFO L225 Difference]: With dead ends: 2533 [2023-12-15 19:47:55,612 INFO L226 Difference]: Without dead ends: 1269 [2023-12-15 19:47:55,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:47:55,615 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 177 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:55,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1152 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:47:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-12-15 19:47:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1267. [2023-12-15 19:47:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 926 states have (on average 1.6220302375809936) internal successors, (1502), 932 states have internal predecessors, (1502), 332 states have call successors, (332), 8 states have call predecessors, (332), 8 states have return successors, (332), 326 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-15 19:47:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 2166 transitions. [2023-12-15 19:47:55,673 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 2166 transitions. Word has length 531 [2023-12-15 19:47:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:55,674 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 2166 transitions. [2023-12-15 19:47:55,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 2166 transitions. [2023-12-15 19:47:55,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-12-15 19:47:55,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:55,679 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:55,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:55,885 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 [2023-12-15 19:47:55,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:55,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1303321887, now seen corresponding path program 1 times [2023-12-15 19:47:55,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:55,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379902553] [2023-12-15 19:47:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:55,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:55,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:55,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459734622] [2023-12-15 19:47:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:55,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:55,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:55,968 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) [2023-12-15 19:47:55,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:47:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:56,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:56,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7072 proven. 0 refuted. 0 times theorem prover too weak. 7548 trivial. 0 not checked. [2023-12-15 19:47:57,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379902553] [2023-12-15 19:47:57,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459734622] [2023-12-15 19:47:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459734622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:57,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671926034] [2023-12-15 19:47:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:57,028 INFO L87 Difference]: Start difference. First operand 1267 states and 2166 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:47:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:57,152 INFO L93 Difference]: Finished difference Result 2535 states and 4332 transitions. [2023-12-15 19:47:57,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:47:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 531 [2023-12-15 19:47:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:57,159 INFO L225 Difference]: With dead ends: 2535 [2023-12-15 19:47:57,159 INFO L226 Difference]: Without dead ends: 1269 [2023-12-15 19:47:57,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:57,164 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 262 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:57,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1120 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:47:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-12-15 19:47:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1267. [2023-12-15 19:47:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 926 states have (on average 1.6198704103671706) internal successors, (1500), 932 states have internal predecessors, (1500), 332 states have call successors, (332), 8 states have call predecessors, (332), 8 states have return successors, (332), 326 states have call predecessors, (332), 332 states have call successors, (332) [2023-12-15 19:47:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 2164 transitions. [2023-12-15 19:47:57,235 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 2164 transitions. Word has length 531 [2023-12-15 19:47:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:57,236 INFO L495 AbstractCegarLoop]: Abstraction has 1267 states and 2164 transitions. [2023-12-15 19:47:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-12-15 19:47:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 2164 transitions. [2023-12-15 19:47:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:47:57,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:57,240 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:57,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:57,447 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 [2023-12-15 19:47:57,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:57,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -129164914, now seen corresponding path program 1 times [2023-12-15 19:47:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706039004] [2023-12-15 19:47:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:57,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:57,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925542956] [2023-12-15 19:47:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:57,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:57,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:57,499 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) [2023-12-15 19:47:57,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:47:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:57,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:47:57,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:47:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:47:58,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:47:58,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:47:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706039004] [2023-12-15 19:47:58,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:47:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925542956] [2023-12-15 19:47:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925542956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:47:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:47:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:47:58,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124213493] [2023-12-15 19:47:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:47:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:47:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:47:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:47:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:58,906 INFO L87 Difference]: Start difference. First operand 1267 states and 2164 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:47:59,224 INFO L93 Difference]: Finished difference Result 5065 states and 8653 transitions. [2023-12-15 19:47:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:47:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:47:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:47:59,240 INFO L225 Difference]: With dead ends: 5065 [2023-12-15 19:47:59,241 INFO L226 Difference]: Without dead ends: 3799 [2023-12-15 19:47:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:47:59,245 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 565 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:47:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1510 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:47:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2023-12-15 19:47:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 2507. [2023-12-15 19:47:59,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1826 states have (on average 1.6100766703176341) internal successors, (2940), 1838 states have internal predecessors, (2940), 664 states have call successors, (664), 16 states have call predecessors, (664), 16 states have return successors, (664), 652 states have call predecessors, (664), 664 states have call successors, (664) [2023-12-15 19:47:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4268 transitions. [2023-12-15 19:47:59,440 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4268 transitions. Word has length 532 [2023-12-15 19:47:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:47:59,441 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 4268 transitions. [2023-12-15 19:47:59,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:47:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4268 transitions. [2023-12-15 19:47:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:47:59,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:47:59,445 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:47:59,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:47:59,652 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 [2023-12-15 19:47:59,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:47:59,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:47:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 905621450, now seen corresponding path program 1 times [2023-12-15 19:47:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:47:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284628953] [2023-12-15 19:47:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:47:59,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:47:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509412521] [2023-12-15 19:47:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:47:59,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:47:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:47:59,701 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) [2023-12-15 19:47:59,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:47:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:47:59,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:47:59,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:00,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284628953] [2023-12-15 19:48:00,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509412521] [2023-12-15 19:48:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509412521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:00,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:00,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:48:00,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108641681] [2023-12-15 19:48:00,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:00,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:00,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:00,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:00,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:00,472 INFO L87 Difference]: Start difference. First operand 2507 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:00,580 INFO L93 Difference]: Finished difference Result 4997 states and 8503 transitions. [2023-12-15 19:48:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:00,590 INFO L225 Difference]: With dead ends: 4997 [2023-12-15 19:48:00,590 INFO L226 Difference]: Without dead ends: 2491 [2023-12-15 19:48:00,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:00,595 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:00,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 396 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2023-12-15 19:48:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2491. [2023-12-15 19:48:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2491 states, 1810 states have (on average 1.5779005524861878) internal successors, (2856), 1822 states have internal predecessors, (2856), 664 states have call successors, (664), 16 states have call predecessors, (664), 16 states have return successors, (664), 652 states have call predecessors, (664), 664 states have call successors, (664) [2023-12-15 19:48:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 4184 transitions. [2023-12-15 19:48:00,766 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 4184 transitions. Word has length 532 [2023-12-15 19:48:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:00,767 INFO L495 AbstractCegarLoop]: Abstraction has 2491 states and 4184 transitions. [2023-12-15 19:48:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 4184 transitions. [2023-12-15 19:48:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:00,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:00,772 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:00,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 19:48:00,978 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 [2023-12-15 19:48:00,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash 833234892, now seen corresponding path program 1 times [2023-12-15 19:48:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367803006] [2023-12-15 19:48:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:01,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120820383] [2023-12-15 19:48:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:01,011 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) [2023-12-15 19:48:01,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:48:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:01,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 19:48:01,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:01,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367803006] [2023-12-15 19:48:01,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120820383] [2023-12-15 19:48:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120820383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:48:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783854096] [2023-12-15 19:48:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:01,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:48:01,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:48:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:48:01,404 INFO L87 Difference]: Start difference. First operand 2491 states and 4184 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:02,486 INFO L93 Difference]: Finished difference Result 18835 states and 31404 transitions. [2023-12-15 19:48:02,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:48:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:02,556 INFO L225 Difference]: With dead ends: 18835 [2023-12-15 19:48:02,557 INFO L226 Difference]: Without dead ends: 16345 [2023-12-15 19:48:02,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:48:02,571 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1665 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:02,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 2271 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:48:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16345 states. [2023-12-15 19:48:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16345 to 9683. [2023-12-15 19:48:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9683 states, 7298 states have (on average 1.5848177582899425) internal successors, (11566), 7354 states have internal predecessors, (11566), 2320 states have call successors, (2320), 64 states have call predecessors, (2320), 64 states have return successors, (2320), 2264 states have call predecessors, (2320), 2320 states have call successors, (2320) [2023-12-15 19:48:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9683 states to 9683 states and 16206 transitions. [2023-12-15 19:48:03,296 INFO L78 Accepts]: Start accepts. Automaton has 9683 states and 16206 transitions. Word has length 532 [2023-12-15 19:48:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:03,296 INFO L495 AbstractCegarLoop]: Abstraction has 9683 states and 16206 transitions. [2023-12-15 19:48:03,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 9683 states and 16206 transitions. [2023-12-15 19:48:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:03,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:03,305 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:03,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 19:48:03,513 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 [2023-12-15 19:48:03,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:03,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1012132274, now seen corresponding path program 1 times [2023-12-15 19:48:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:03,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677884379] [2023-12-15 19:48:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:03,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:03,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091731883] [2023-12-15 19:48:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:03,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:03,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:03,582 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) [2023-12-15 19:48:03,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:48:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:03,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 19:48:03,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9060 proven. 228 refuted. 0 times theorem prover too weak. 5332 trivial. 0 not checked. [2023-12-15 19:48:06,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 141 proven. 114 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-12-15 19:48:10,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677884379] [2023-12-15 19:48:10,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091731883] [2023-12-15 19:48:10,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091731883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:48:10,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:48:10,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-15 19:48:10,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767529212] [2023-12-15 19:48:10,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:48:10,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 19:48:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 19:48:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2023-12-15 19:48:10,616 INFO L87 Difference]: Start difference. First operand 9683 states and 16206 transitions. Second operand has 25 states, 24 states have (on average 8.291666666666666) internal successors, (199), 23 states have internal predecessors, (199), 8 states have call successors, (172), 5 states have call predecessors, (172), 7 states have return successors, (172), 8 states have call predecessors, (172), 8 states have call successors, (172) [2023-12-15 19:48:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:27,612 INFO L93 Difference]: Finished difference Result 79887 states and 132145 transitions. [2023-12-15 19:48:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-15 19:48:27,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 8.291666666666666) internal successors, (199), 23 states have internal predecessors, (199), 8 states have call successors, (172), 5 states have call predecessors, (172), 7 states have return successors, (172), 8 states have call predecessors, (172), 8 states have call successors, (172) Word has length 532 [2023-12-15 19:48:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:27,837 INFO L225 Difference]: With dead ends: 79887 [2023-12-15 19:48:27,837 INFO L226 Difference]: Without dead ends: 70205 [2023-12-15 19:48:27,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3593 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3118, Invalid=7802, Unknown=0, NotChecked=0, Total=10920 [2023-12-15 19:48:27,868 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 9163 mSDsluCounter, 5234 mSDsCounter, 0 mSdLazyCounter, 5930 mSolverCounterSat, 3976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9197 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 9906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3976 IncrementalHoareTripleChecker+Valid, 5930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:27,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9197 Valid, 5873 Invalid, 9906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3976 Valid, 5930 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-15 19:48:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70205 states. [2023-12-15 19:48:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70205 to 22401. [2023-12-15 19:48:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22401 states, 17698 states have (on average 1.6052661317663013) internal successors, (28410), 17826 states have internal predecessors, (28410), 4520 states have call successors, (4520), 182 states have call predecessors, (4520), 182 states have return successors, (4520), 4392 states have call predecessors, (4520), 4520 states have call successors, (4520) [2023-12-15 19:48:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22401 states to 22401 states and 37450 transitions. [2023-12-15 19:48:30,261 INFO L78 Accepts]: Start accepts. Automaton has 22401 states and 37450 transitions. Word has length 532 [2023-12-15 19:48:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:30,261 INFO L495 AbstractCegarLoop]: Abstraction has 22401 states and 37450 transitions. [2023-12-15 19:48:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 8.291666666666666) internal successors, (199), 23 states have internal predecessors, (199), 8 states have call successors, (172), 5 states have call predecessors, (172), 7 states have return successors, (172), 8 states have call predecessors, (172), 8 states have call successors, (172) [2023-12-15 19:48:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22401 states and 37450 transitions. [2023-12-15 19:48:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:30,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:30,275 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:30,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:30,482 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 [2023-12-15 19:48:30,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -352600752, now seen corresponding path program 1 times [2023-12-15 19:48:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741968645] [2023-12-15 19:48:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:30,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173737353] [2023-12-15 19:48:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:30,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:30,534 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) [2023-12-15 19:48:30,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:48:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:31,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:48:31,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 2565 proven. 231 refuted. 0 times theorem prover too weak. 11824 trivial. 0 not checked. [2023-12-15 19:48:31,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:48:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:32,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741968645] [2023-12-15 19:48:32,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173737353] [2023-12-15 19:48:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173737353] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:48:32,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:48:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-12-15 19:48:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779124427] [2023-12-15 19:48:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:48:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:48:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:48:32,468 INFO L87 Difference]: Start difference. First operand 22401 states and 37450 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:34,908 INFO L93 Difference]: Finished difference Result 51877 states and 84693 transitions. [2023-12-15 19:48:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:48:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:34,978 INFO L225 Difference]: With dead ends: 51877 [2023-12-15 19:48:34,978 INFO L226 Difference]: Without dead ends: 29477 [2023-12-15 19:48:35,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:48:35,023 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 122 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:35,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1571 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:48:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29477 states. [2023-12-15 19:48:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29477 to 28385. [2023-12-15 19:48:37,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28385 states, 22322 states have (on average 1.5469043992473792) internal successors, (34530), 22586 states have internal predecessors, (34530), 5608 states have call successors, (5608), 454 states have call predecessors, (5608), 454 states have return successors, (5608), 5344 states have call predecessors, (5608), 5608 states have call successors, (5608) [2023-12-15 19:48:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28385 states to 28385 states and 45746 transitions. [2023-12-15 19:48:37,468 INFO L78 Accepts]: Start accepts. Automaton has 28385 states and 45746 transitions. Word has length 532 [2023-12-15 19:48:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 28385 states and 45746 transitions. [2023-12-15 19:48:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28385 states and 45746 transitions. [2023-12-15 19:48:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:37,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:37,488 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:37,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:37,694 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 [2023-12-15 19:48:37,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:37,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash 348463826, now seen corresponding path program 1 times [2023-12-15 19:48:37,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:37,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526582563] [2023-12-15 19:48:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:37,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:37,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:37,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003921592] [2023-12-15 19:48:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:37,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:37,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:37,746 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) [2023-12-15 19:48:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:48:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:38,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:48:38,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:38,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526582563] [2023-12-15 19:48:38,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003921592] [2023-12-15 19:48:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003921592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:38,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:38,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796639003] [2023-12-15 19:48:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:38,095 INFO L87 Difference]: Start difference. First operand 28385 states and 45746 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:40,248 INFO L93 Difference]: Finished difference Result 55681 states and 89791 transitions. [2023-12-15 19:48:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:40,336 INFO L225 Difference]: With dead ends: 55681 [2023-12-15 19:48:40,336 INFO L226 Difference]: Without dead ends: 27297 [2023-12-15 19:48:40,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:40,385 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 13 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:40,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 779 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27297 states. [2023-12-15 19:48:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27297 to 27297. [2023-12-15 19:48:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27297 states, 21234 states have (on average 1.5332956579071302) internal successors, (32558), 21498 states have internal predecessors, (32558), 5608 states have call successors, (5608), 454 states have call predecessors, (5608), 454 states have return successors, (5608), 5344 states have call predecessors, (5608), 5608 states have call successors, (5608) [2023-12-15 19:48:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27297 states to 27297 states and 43774 transitions. [2023-12-15 19:48:43,000 INFO L78 Accepts]: Start accepts. Automaton has 27297 states and 43774 transitions. Word has length 532 [2023-12-15 19:48:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:43,001 INFO L495 AbstractCegarLoop]: Abstraction has 27297 states and 43774 transitions. [2023-12-15 19:48:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 27297 states and 43774 transitions. [2023-12-15 19:48:43,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-12-15 19:48:43,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:43,018 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:43,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:48:43,225 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 [2023-12-15 19:48:43,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:43,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash -939406766, now seen corresponding path program 1 times [2023-12-15 19:48:43,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:43,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931750436] [2023-12-15 19:48:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:43,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:48:43,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142482403] [2023-12-15 19:48:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:43,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:48:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:48:43,290 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) [2023-12-15 19:48:43,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:48:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:48:43,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:48:43,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:48:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-12-15 19:48:43,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:48:43,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:48:43,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931750436] [2023-12-15 19:48:43,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:48:43,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142482403] [2023-12-15 19:48:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142482403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:48:43,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:48:43,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:48:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725371741] [2023-12-15 19:48:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:48:43,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:48:43,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:48:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:48:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:43,627 INFO L87 Difference]: Start difference. First operand 27297 states and 43774 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:48:45,625 INFO L93 Difference]: Finished difference Result 50797 states and 81787 transitions. [2023-12-15 19:48:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:48:45,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 532 [2023-12-15 19:48:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:48:45,671 INFO L225 Difference]: With dead ends: 50797 [2023-12-15 19:48:45,671 INFO L226 Difference]: Without dead ends: 23501 [2023-12-15 19:48:45,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:48:45,711 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 15 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:48:45,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 771 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:48:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23501 states. [2023-12-15 19:48:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23501 to 23501. [2023-12-15 19:48:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23501 states, 18518 states have (on average 1.5564315800842423) internal successors, (28822), 18647 states have internal predecessors, (28822), 4528 states have call successors, (4528), 454 states have call predecessors, (4528), 454 states have return successors, (4528), 4399 states have call predecessors, (4528), 4528 states have call successors, (4528) [2023-12-15 19:48:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23501 states to 23501 states and 37878 transitions. [2023-12-15 19:48:47,710 INFO L78 Accepts]: Start accepts. Automaton has 23501 states and 37878 transitions. Word has length 532 [2023-12-15 19:48:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:48:47,711 INFO L495 AbstractCegarLoop]: Abstraction has 23501 states and 37878 transitions. [2023-12-15 19:48:47,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-12-15 19:48:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23501 states and 37878 transitions. [2023-12-15 19:48:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 19:48:47,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:48:47,725 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:47,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 Received shutdown request... [2023-12-15 19:48:47,932 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 [2023-12-15 19:48:47,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:48:47,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:48:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash -196201026, now seen corresponding path program 1 times [2023-12-15 19:48:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:48:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947922105] [2023-12-15 19:48:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:48:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:48:47,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-15 19:48:47,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:48:47,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:48:47,961 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 535 with TraceHistMax 86,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [947922105] and IpTcStrategyModuleZ3 [637547175]. [2023-12-15 19:48:47,964 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:48:47,966 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:48:47,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:48:47 BoogieIcfgContainer [2023-12-15 19:48:47,968 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:48:47,968 INFO L158 Benchmark]: Toolchain (without parser) took 58542.16ms. Allocated memory was 224.4MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 169.9MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 19:48:47,968 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory was 135.7MB in the beginning and 135.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:48:47,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.78ms. Allocated memory is still 224.4MB. Free memory was 169.9MB in the beginning and 144.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 19:48:47,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.40ms. Allocated memory is still 224.4MB. Free memory was 144.7MB in the beginning and 135.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 19:48:47,969 INFO L158 Benchmark]: Boogie Preprocessor took 66.97ms. Allocated memory is still 224.4MB. Free memory was 135.3MB in the beginning and 124.3MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 19:48:47,970 INFO L158 Benchmark]: RCFGBuilder took 728.34ms. Allocated memory is still 224.4MB. Free memory was 124.3MB in the beginning and 130.6MB in the end (delta: -6.4MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2023-12-15 19:48:47,970 INFO L158 Benchmark]: TraceAbstraction took 57265.56ms. Allocated memory was 224.4MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 130.1MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 19:48:47,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 186.6MB. Free memory was 135.7MB in the beginning and 135.5MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 393.78ms. Allocated memory is still 224.4MB. Free memory was 169.9MB in the beginning and 144.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 83.40ms. Allocated memory is still 224.4MB. Free memory was 144.7MB in the beginning and 135.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.97ms. Allocated memory is still 224.4MB. Free memory was 135.3MB in the beginning and 124.3MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 728.34ms. Allocated memory is still 224.4MB. Free memory was 124.3MB in the beginning and 130.6MB in the end (delta: -6.4MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. * TraceAbstraction took 57265.56ms. Allocated memory was 224.4MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 130.1MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 535 with TraceHistMax 86,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [947922105] and IpTcStrategyModuleZ3 [637547175]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.2s, OverallIterations: 14, TraceHistogramMax: 86, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13077 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13043 mSDsluCounter, 18784 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12535 mSDsCounter, 4400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7010 IncrementalHoareTripleChecker+Invalid, 11410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4400 mSolverCounterUnsat, 6249 mSDtfsCounter, 7010 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8075 GetRequests, 7938 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3619 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28385occurred in iteration=11, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 56988 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 7441 NumberOfCodeBlocks, 7441 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7959 ConstructedInterpolants, 0 QuantifiedInterpolants, 31074 SizeOfPredicates, 34 NumberOfNonLiveVariables, 15452 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 218727/219300 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available [2023-12-15 19:48:47,988 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown