/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-13.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:44:37,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:44:37,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 06:44:37,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:44:37,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:44:37,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:44:37,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:44:37,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:44:37,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:44:37,718 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:44:37,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:44:37,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:44:37,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:44:37,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:44:37,720 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:44:37,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:44:37,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:44:37,727 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:44:37,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:44:37,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:44:37,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:44:37,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:44:37,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:44:37,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:44:37,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:44:37,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:44:37,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:44:37,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:44:37,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:44:37,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:44:37,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:44:37,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:44:37,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:44:37,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:44:37,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:44:37,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:44:37,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:44:37,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:44:37,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:44:37,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:44:37,733 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:44:37,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:44:37,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:44:37,733 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:44:37,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:44:38,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:44:38,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:44:38,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:44:38,006 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:44:38,007 INFO L431 ainManager$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-13.i [2023-12-19 06:44:39,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:44:39,318 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:44:39,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-13.i [2023-12-19 06:44:39,333 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781e26d16/d288190ca5e74c48a874821d8db81160/FLAG9cfe2857b [2023-12-19 06:44:39,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781e26d16/d288190ca5e74c48a874821d8db81160 [2023-12-19 06:44:39,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:44:39,350 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:44:39,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:44:39,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:44:39,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:44:39,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd6067d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39, skipping insertion in model container [2023-12-19 06:44:39,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:44:39,495 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-13.i[916,929] [2023-12-19 06:44:39,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:44:39,629 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:44:39,642 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-13.i[916,929] [2023-12-19 06:44:39,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:44:39,695 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:44:39,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39 WrapperNode [2023-12-19 06:44:39,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:44:39,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:44:39,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:44:39,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:44:39,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,773 INFO L138 Inliner]: procedures = 26, calls = 96, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 586 [2023-12-19 06:44:39,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:44:39,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:44:39,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:44:39,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:44:39,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,835 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 06:44:39,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:44:39,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:44:39,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:44:39,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:44:39,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (1/1) ... [2023-12-19 06:44:39,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:44:39,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:39,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 06:44:39,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 06:44:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:44:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:44:39,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:44:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:44:39,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:44:39,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:44:40,054 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:44:40,056 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:44:40,675 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:44:40,716 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:44:40,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:44:40,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:44:40 BoogieIcfgContainer [2023-12-19 06:44:40,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:44:40,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:44:40,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:44:40,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:44:40,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:44:39" (1/3) ... [2023-12-19 06:44:40,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bb89e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:44:40, skipping insertion in model container [2023-12-19 06:44:40,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:44:39" (2/3) ... [2023-12-19 06:44:40,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28bb89e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:44:40, skipping insertion in model container [2023-12-19 06:44:40,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:44:40" (3/3) ... [2023-12-19 06:44:40,729 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-13.i [2023-12-19 06:44:40,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:44:40,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:44:40,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:44:40,793 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;@4ba4bf55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:44:40,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:44:40,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 140 states have (on average 1.5714285714285714) internal successors, (220), 141 states have internal predecessors, (220), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-19 06:44:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-19 06:44:40,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:40,832 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:40,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:40,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1011271138, now seen corresponding path program 1 times [2023-12-19 06:44:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565182934] [2023-12-19 06:44:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:40,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:41,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565182934] [2023-12-19 06:44:41,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:44:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086220638] [2023-12-19 06:44:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:41,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:41,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:41,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 06:44:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:41,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:44:41,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2023-12-19 06:44:41,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086220638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:44:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170300186] [2023-12-19 06:44:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:41,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:44:41,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:44:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:44:41,589 INFO L87 Difference]: Start difference. First operand has 226 states, 140 states have (on average 1.5714285714285714) internal successors, (220), 141 states have internal predecessors, (220), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-19 06:44:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:41,685 INFO L93 Difference]: Finished difference Result 448 states and 851 transitions. [2023-12-19 06:44:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:44:41,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) Word has length 521 [2023-12-19 06:44:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:41,697 INFO L225 Difference]: With dead ends: 448 [2023-12-19 06:44:41,697 INFO L226 Difference]: Without dead ends: 223 [2023-12-19 06:44:41,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:44:41,704 INFO L413 NwaCegarLoop]: 374 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, 374 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:41,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 374 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:44:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-19 06:44:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2023-12-19 06:44:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.5289855072463767) internal successors, (211), 138 states have internal predecessors, (211), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-19 06:44:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 377 transitions. [2023-12-19 06:44:41,781 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 377 transitions. Word has length 521 [2023-12-19 06:44:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:41,782 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 377 transitions. [2023-12-19 06:44:41,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 2 states have call successors, (83) [2023-12-19 06:44:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 377 transitions. [2023-12-19 06:44:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-19 06:44:41,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:41,795 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:41,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 06:44:42,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 06:44:42,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:42,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1730990232, now seen corresponding path program 1 times [2023-12-19 06:44:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255942471] [2023-12-19 06:44:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:42,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:42,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89094233] [2023-12-19 06:44:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:42,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:42,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:42,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 06:44:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:42,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:44:42,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:42,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:42,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255942471] [2023-12-19 06:44:42,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89094233] [2023-12-19 06:44:42,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89094233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:42,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:42,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:44:42,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297117497] [2023-12-19 06:44:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:44:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:44:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:42,449 INFO L87 Difference]: Start difference. First operand 223 states and 377 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:42,555 INFO L93 Difference]: Finished difference Result 660 states and 1115 transitions. [2023-12-19 06:44:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:44:42,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 521 [2023-12-19 06:44:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:42,565 INFO L225 Difference]: With dead ends: 660 [2023-12-19 06:44:42,565 INFO L226 Difference]: Without dead ends: 438 [2023-12-19 06:44:42,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:42,570 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 337 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:42,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 739 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:44:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-19 06:44:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2023-12-19 06:44:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 267 states have (on average 1.4943820224719102) internal successors, (399), 267 states have internal predecessors, (399), 166 states have call successors, (166), 2 states have call predecessors, (166), 2 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2023-12-19 06:44:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 731 transitions. [2023-12-19 06:44:42,662 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 731 transitions. Word has length 521 [2023-12-19 06:44:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:42,664 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 731 transitions. [2023-12-19 06:44:42,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 731 transitions. [2023-12-19 06:44:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:42,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:42,669 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:42,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 06:44:42,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:42,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1553671721, now seen corresponding path program 1 times [2023-12-19 06:44:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:42,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674485424] [2023-12-19 06:44:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:42,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515995625] [2023-12-19 06:44:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:42,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:42,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:42,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 06:44:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:43,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 06:44:43,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:43,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:43,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674485424] [2023-12-19 06:44:43,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:43,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515995625] [2023-12-19 06:44:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515995625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:43,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:44:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766513612] [2023-12-19 06:44:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:43,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:44:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:43,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:44:43,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:43,201 INFO L87 Difference]: Start difference. First operand 436 states and 731 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:43,234 INFO L93 Difference]: Finished difference Result 931 states and 1546 transitions. [2023-12-19 06:44:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:44:43,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 522 [2023-12-19 06:44:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:43,238 INFO L225 Difference]: With dead ends: 931 [2023-12-19 06:44:43,238 INFO L226 Difference]: Without dead ends: 496 [2023-12-19 06:44:43,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:43,240 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 36 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:43,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 769 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:44:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-19 06:44:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2023-12-19 06:44:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 309 states have (on average 1.4724919093851132) internal successors, (455), 311 states have internal predecessors, (455), 178 states have call successors, (178), 4 states have call predecessors, (178), 4 states have return successors, (178), 176 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-19 06:44:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 811 transitions. [2023-12-19 06:44:43,270 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 811 transitions. Word has length 522 [2023-12-19 06:44:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:43,271 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 811 transitions. [2023-12-19 06:44:43,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 811 transitions. [2023-12-19 06:44:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:43,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:43,274 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:43,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:43,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:43,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 542554471, now seen corresponding path program 1 times [2023-12-19 06:44:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:43,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088182226] [2023-12-19 06:44:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:43,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674518899] [2023-12-19 06:44:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:43,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:43,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:43,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 06:44:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:43,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:44:43,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:44,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:44,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:44,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088182226] [2023-12-19 06:44:44,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:44,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674518899] [2023-12-19 06:44:44,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674518899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:44,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:44,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 06:44:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592885184] [2023-12-19 06:44:44,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:44,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:44:44,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:44,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:44:44,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:44:44,395 INFO L87 Difference]: Start difference. First operand 492 states and 811 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:44,730 INFO L93 Difference]: Finished difference Result 1612 states and 2624 transitions. [2023-12-19 06:44:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 06:44:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 522 [2023-12-19 06:44:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:44,737 INFO L225 Difference]: With dead ends: 1612 [2023-12-19 06:44:44,737 INFO L226 Difference]: Without dead ends: 1121 [2023-12-19 06:44:44,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-19 06:44:44,739 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 479 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:44,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 2187 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:44:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-19 06:44:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1049. [2023-12-19 06:44:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 684 states have (on average 1.4649122807017543) internal successors, (1002), 688 states have internal predecessors, (1002), 356 states have call successors, (356), 8 states have call predecessors, (356), 8 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2023-12-19 06:44:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1714 transitions. [2023-12-19 06:44:44,836 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1714 transitions. Word has length 522 [2023-12-19 06:44:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:44,836 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1714 transitions. [2023-12-19 06:44:44,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1714 transitions. [2023-12-19 06:44:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:44,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:44,840 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:44,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:45,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:45,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash 800719909, now seen corresponding path program 1 times [2023-12-19 06:44:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:45,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121547658] [2023-12-19 06:44:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:45,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:45,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647662517] [2023-12-19 06:44:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:45,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:45,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 06:44:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:45,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:44:45,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 6778 proven. 138 refuted. 0 times theorem prover too weak. 6696 trivial. 0 not checked. [2023-12-19 06:44:46,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:44:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 108 proven. 138 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:44:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121547658] [2023-12-19 06:44:46,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647662517] [2023-12-19 06:44:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647662517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:44:46,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:44:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-19 06:44:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697334997] [2023-12-19 06:44:46,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:44:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:44:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:44:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:44:46,582 INFO L87 Difference]: Start difference. First operand 1049 states and 1714 transitions. Second operand has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2023-12-19 06:44:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:47,568 INFO L93 Difference]: Finished difference Result 3727 states and 5997 transitions. [2023-12-19 06:44:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 06:44:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) Word has length 522 [2023-12-19 06:44:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:47,581 INFO L225 Difference]: With dead ends: 3727 [2023-12-19 06:44:47,581 INFO L226 Difference]: Without dead ends: 2679 [2023-12-19 06:44:47,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:44:47,585 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 998 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:47,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1410 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:44:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-12-19 06:44:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2639. [2023-12-19 06:44:47,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1730 states have (on average 1.4346820809248555) internal successors, (2482), 1746 states have internal predecessors, (2482), 880 states have call successors, (880), 28 states have call predecessors, (880), 28 states have return successors, (880), 864 states have call predecessors, (880), 880 states have call successors, (880) [2023-12-19 06:44:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 4242 transitions. [2023-12-19 06:44:47,815 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 4242 transitions. Word has length 522 [2023-12-19 06:44:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:47,816 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 4242 transitions. [2023-12-19 06:44:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.7) internal successors, (207), 10 states have internal predecessors, (207), 4 states have call successors, (166), 3 states have call predecessors, (166), 5 states have return successors, (166), 4 states have call predecessors, (166), 4 states have call successors, (166) [2023-12-19 06:44:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 4242 transitions. [2023-12-19 06:44:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:47,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:47,821 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:47,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:48,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:48,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:48,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1004718425, now seen corresponding path program 1 times [2023-12-19 06:44:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963865764] [2023-12-19 06:44:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:48,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487107148] [2023-12-19 06:44:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:48,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:48,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 06:44:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:48,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 06:44:48,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 5556 proven. 177 refuted. 0 times theorem prover too weak. 7879 trivial. 0 not checked. [2023-12-19 06:44:48,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:44:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 69 proven. 177 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:44:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963865764] [2023-12-19 06:44:48,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487107148] [2023-12-19 06:44:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487107148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:44:48,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:44:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 06:44:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782603507] [2023-12-19 06:44:48,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:44:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:44:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:44:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 06:44:48,976 INFO L87 Difference]: Start difference. First operand 2639 states and 4242 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-12-19 06:44:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:49,387 INFO L93 Difference]: Finished difference Result 3743 states and 5999 transitions. [2023-12-19 06:44:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 06:44:49,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) Word has length 522 [2023-12-19 06:44:49,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:49,395 INFO L225 Difference]: With dead ends: 3743 [2023-12-19 06:44:49,395 INFO L226 Difference]: Without dead ends: 1105 [2023-12-19 06:44:49,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1036 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:44:49,404 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 491 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:49,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 671 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:44:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2023-12-19 06:44:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1081. [2023-12-19 06:44:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 708 states have (on average 1.423728813559322) internal successors, (1008), 712 states have internal predecessors, (1008), 356 states have call successors, (356), 16 states have call predecessors, (356), 16 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2023-12-19 06:44:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1720 transitions. [2023-12-19 06:44:49,502 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1720 transitions. Word has length 522 [2023-12-19 06:44:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:49,503 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1720 transitions. [2023-12-19 06:44:49,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (142), 2 states have call predecessors, (142), 4 states have return successors, (143), 2 states have call predecessors, (143), 2 states have call successors, (143) [2023-12-19 06:44:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1720 transitions. [2023-12-19 06:44:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:49,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:49,507 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:49,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 06:44:49,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:49,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:49,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:49,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1459715747, now seen corresponding path program 1 times [2023-12-19 06:44:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476704655] [2023-12-19 06:44:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:49,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:49,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136120242] [2023-12-19 06:44:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:49,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:49,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:49,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:49,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 06:44:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:50,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 06:44:50,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:51,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:51,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476704655] [2023-12-19 06:44:51,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:51,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136120242] [2023-12-19 06:44:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136120242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:44:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145017493] [2023-12-19 06:44:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:44:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:44:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:44:51,343 INFO L87 Difference]: Start difference. First operand 1081 states and 1720 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:51,734 INFO L93 Difference]: Finished difference Result 2533 states and 4039 transitions. [2023-12-19 06:44:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 06:44:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 522 [2023-12-19 06:44:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:51,747 INFO L225 Difference]: With dead ends: 2533 [2023-12-19 06:44:51,747 INFO L226 Difference]: Without dead ends: 1453 [2023-12-19 06:44:51,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:44:51,751 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 324 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:51,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1639 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:44:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-12-19 06:44:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1349. [2023-12-19 06:44:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 890 states have (on average 1.448314606741573) internal successors, (1289), 894 states have internal predecessors, (1289), 439 states have call successors, (439), 19 states have call predecessors, (439), 19 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-19 06:44:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2167 transitions. [2023-12-19 06:44:51,899 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2167 transitions. Word has length 522 [2023-12-19 06:44:51,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:51,900 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 2167 transitions. [2023-12-19 06:44:51,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2167 transitions. [2023-12-19 06:44:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:51,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:51,904 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:51,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 06:44:52,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:52,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:52,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash 180481955, now seen corresponding path program 1 times [2023-12-19 06:44:52,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553015576] [2023-12-19 06:44:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:52,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:52,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794158522] [2023-12-19 06:44:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:52,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:52,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:52,151 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:52,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 06:44:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:52,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:44:52,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:52,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553015576] [2023-12-19 06:44:52,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794158522] [2023-12-19 06:44:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794158522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:44:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068054570] [2023-12-19 06:44:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:52,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:44:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:44:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:52,451 INFO L87 Difference]: Start difference. First operand 1349 states and 2167 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:52,539 INFO L93 Difference]: Finished difference Result 2569 states and 4095 transitions. [2023-12-19 06:44:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:44:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 522 [2023-12-19 06:44:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:52,547 INFO L225 Difference]: With dead ends: 2569 [2023-12-19 06:44:52,548 INFO L226 Difference]: Without dead ends: 1489 [2023-12-19 06:44:52,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:44:52,552 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 18 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:52,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 718 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:44:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-12-19 06:44:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1455. [2023-12-19 06:44:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 996 states have (on average 1.4548192771084338) internal successors, (1449), 1000 states have internal predecessors, (1449), 439 states have call successors, (439), 19 states have call predecessors, (439), 19 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-19 06:44:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2327 transitions. [2023-12-19 06:44:52,706 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2327 transitions. Word has length 522 [2023-12-19 06:44:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:52,706 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2327 transitions. [2023-12-19 06:44:52,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2327 transitions. [2023-12-19 06:44:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:52,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:52,710 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:52,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 06:44:52,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:52,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash 180541537, now seen corresponding path program 1 times [2023-12-19 06:44:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272331667] [2023-12-19 06:44:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:52,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138072872] [2023-12-19 06:44:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:52,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:52,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:53,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 06:44:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:53,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 06:44:53,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 408 proven. 243 refuted. 0 times theorem prover too weak. 12961 trivial. 0 not checked. [2023-12-19 06:44:53,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:44:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 3 proven. 243 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:44:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272331667] [2023-12-19 06:44:54,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138072872] [2023-12-19 06:44:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138072872] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:44:54,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:44:54,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 06:44:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744961209] [2023-12-19 06:44:54,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:44:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:44:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:44:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:44:54,259 INFO L87 Difference]: Start difference. First operand 1455 states and 2327 transitions. Second operand has 12 states, 12 states have (on average 17.75) internal successors, (213), 12 states have internal predecessors, (213), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-12-19 06:44:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:54,936 INFO L93 Difference]: Finished difference Result 3285 states and 5107 transitions. [2023-12-19 06:44:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:44:54,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.75) internal successors, (213), 12 states have internal predecessors, (213), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) Word has length 522 [2023-12-19 06:44:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:54,944 INFO L225 Difference]: With dead ends: 3285 [2023-12-19 06:44:54,944 INFO L226 Difference]: Without dead ends: 2099 [2023-12-19 06:44:54,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:44:54,956 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 588 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:54,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 1233 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:44:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2023-12-19 06:44:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1531. [2023-12-19 06:44:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1063 states have (on average 1.4336782690498588) internal successors, (1524), 1067 states have internal predecessors, (1524), 439 states have call successors, (439), 28 states have call predecessors, (439), 28 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-19 06:44:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2402 transitions. [2023-12-19 06:44:55,176 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2402 transitions. Word has length 522 [2023-12-19 06:44:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:55,177 INFO L495 AbstractCegarLoop]: Abstraction has 1531 states and 2402 transitions. [2023-12-19 06:44:55,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.75) internal successors, (213), 12 states have internal predecessors, (213), 3 states have call successors, (164), 2 states have call predecessors, (164), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2023-12-19 06:44:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2402 transitions. [2023-12-19 06:44:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2023-12-19 06:44:55,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:55,181 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:55,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:55,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash 438706975, now seen corresponding path program 1 times [2023-12-19 06:44:55,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902529759] [2023-12-19 06:44:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:55,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284387330] [2023-12-19 06:44:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:55,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:55,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:55,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 06:44:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:55,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 06:44:55,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:44:56,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:44:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:44:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902529759] [2023-12-19 06:44:56,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:44:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284387330] [2023-12-19 06:44:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284387330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:44:56,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:44:56,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:44:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192531893] [2023-12-19 06:44:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:44:56,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:44:56,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:44:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:44:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 06:44:56,828 INFO L87 Difference]: Start difference. First operand 1531 states and 2402 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:44:57,209 INFO L93 Difference]: Finished difference Result 2981 states and 4626 transitions. [2023-12-19 06:44:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 06:44:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 522 [2023-12-19 06:44:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:44:57,229 INFO L225 Difference]: With dead ends: 2981 [2023-12-19 06:44:57,230 INFO L226 Difference]: Without dead ends: 1723 [2023-12-19 06:44:57,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 06:44:57,234 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 318 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:44:57,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1640 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:44:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-12-19 06:44:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1533. [2023-12-19 06:44:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1065 states have (on average 1.4328638497652582) internal successors, (1526), 1069 states have internal predecessors, (1526), 439 states have call successors, (439), 28 states have call predecessors, (439), 28 states have return successors, (439), 435 states have call predecessors, (439), 439 states have call successors, (439) [2023-12-19 06:44:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2404 transitions. [2023-12-19 06:44:57,349 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2404 transitions. Word has length 522 [2023-12-19 06:44:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:44:57,350 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 2404 transitions. [2023-12-19 06:44:57,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:44:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2404 transitions. [2023-12-19 06:44:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 06:44:57,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:44:57,354 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:44:57,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 06:44:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 06:44:57,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:44:57,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:44:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1842532928, now seen corresponding path program 1 times [2023-12-19 06:44:57,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:44:57,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913368088] [2023-12-19 06:44:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:57,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:44:57,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:44:57,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332566959] [2023-12-19 06:44:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:44:57,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:44:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:44:57,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:44:57,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 06:44:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:44:57,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 06:44:57,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:44:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 8076 proven. 288 refuted. 0 times theorem prover too weak. 5248 trivial. 0 not checked. [2023-12-19 06:44:59,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:45:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 150 proven. 96 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:45:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:45:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913368088] [2023-12-19 06:45:04,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:45:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332566959] [2023-12-19 06:45:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332566959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:45:04,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:45:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 26 [2023-12-19 06:45:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375730666] [2023-12-19 06:45:04,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:45:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 06:45:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:45:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 06:45:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:45:04,374 INFO L87 Difference]: Start difference. First operand 1533 states and 2404 transitions. Second operand has 26 states, 26 states have (on average 8.615384615384615) internal successors, (224), 26 states have internal predecessors, (224), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (166), 8 states have call predecessors, (166), 8 states have call successors, (166) [2023-12-19 06:45:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:45:18,013 INFO L93 Difference]: Finished difference Result 16091 states and 23847 transitions. [2023-12-19 06:45:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2023-12-19 06:45:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.615384615384615) internal successors, (224), 26 states have internal predecessors, (224), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (166), 8 states have call predecessors, (166), 8 states have call successors, (166) Word has length 523 [2023-12-19 06:45:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:45:18,066 INFO L225 Difference]: With dead ends: 16091 [2023-12-19 06:45:18,066 INFO L226 Difference]: Without dead ends: 14823 [2023-12-19 06:45:18,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20635 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8589, Invalid=40031, Unknown=0, NotChecked=0, Total=48620 [2023-12-19 06:45:18,084 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 5141 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 5271 mSolverCounterSat, 3038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5185 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 8309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3038 IncrementalHoareTripleChecker+Valid, 5271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:45:18,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5185 Valid, 4212 Invalid, 8309 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3038 Valid, 5271 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-19 06:45:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14823 states. [2023-12-19 06:45:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14823 to 6104. [2023-12-19 06:45:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 4481 states have (on average 1.4168712340995313) internal successors, (6349), 4511 states have internal predecessors, (6349), 1453 states have call successors, (1453), 169 states have call predecessors, (1453), 169 states have return successors, (1453), 1423 states have call predecessors, (1453), 1453 states have call successors, (1453) [2023-12-19 06:45:18,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 9255 transitions. [2023-12-19 06:45:18,798 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 9255 transitions. Word has length 523 [2023-12-19 06:45:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:45:18,798 INFO L495 AbstractCegarLoop]: Abstraction has 6104 states and 9255 transitions. [2023-12-19 06:45:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.615384615384615) internal successors, (224), 26 states have internal predecessors, (224), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (166), 8 states have call predecessors, (166), 8 states have call successors, (166) [2023-12-19 06:45:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 9255 transitions. [2023-12-19 06:45:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 06:45:18,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:45:18,802 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:45:18,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 06:45:19,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 06:45:19,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:45:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:45:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash 456329534, now seen corresponding path program 1 times [2023-12-19 06:45:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:45:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992539696] [2023-12-19 06:45:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:45:19,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:45:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281943220] [2023-12-19 06:45:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:19,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:45:19,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:45:19,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:45:19,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 06:45:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:45:19,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 06:45:19,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:45:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9924 proven. 498 refuted. 0 times theorem prover too weak. 3190 trivial. 0 not checked. [2023-12-19 06:45:23,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:45:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:45:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992539696] [2023-12-19 06:45:41,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:45:41,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281943220] [2023-12-19 06:45:41,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281943220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 06:45:41,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:45:41,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-19 06:45:41,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119159054] [2023-12-19 06:45:41,079 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 06:45:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 06:45:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:45:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 06:45:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=757, Unknown=2, NotChecked=0, Total=992 [2023-12-19 06:45:41,089 INFO L87 Difference]: Start difference. First operand 6104 states and 9255 transitions. Second operand has 24 states, 24 states have (on average 6.0) internal successors, (144), 22 states have internal predecessors, (144), 8 states have call successors, (83), 8 states have call predecessors, (83), 12 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2023-12-19 06:45:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:45:46,853 INFO L93 Difference]: Finished difference Result 20393 states and 30407 transitions. [2023-12-19 06:45:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-19 06:45:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 22 states have internal predecessors, (144), 8 states have call successors, (83), 8 states have call predecessors, (83), 12 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) Word has length 523 [2023-12-19 06:45:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:45:46,890 INFO L225 Difference]: With dead ends: 20393 [2023-12-19 06:45:46,890 INFO L226 Difference]: Without dead ends: 14660 [2023-12-19 06:45:46,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1280, Invalid=4120, Unknown=2, NotChecked=0, Total=5402 [2023-12-19 06:45:46,912 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1115 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 3562 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 4017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:45:46,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 2253 Invalid, 4017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3562 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 06:45:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14660 states. [2023-12-19 06:45:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14660 to 8467. [2023-12-19 06:45:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8467 states, 6213 states have (on average 1.4056011588604538) internal successors, (8733), 6255 states have internal predecessors, (8733), 1967 states have call successors, (1967), 286 states have call predecessors, (1967), 286 states have return successors, (1967), 1925 states have call predecessors, (1967), 1967 states have call successors, (1967) [2023-12-19 06:45:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 12667 transitions. [2023-12-19 06:45:48,167 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 12667 transitions. Word has length 523 [2023-12-19 06:45:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:45:48,168 INFO L495 AbstractCegarLoop]: Abstraction has 8467 states and 12667 transitions. [2023-12-19 06:45:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 22 states have internal predecessors, (144), 8 states have call successors, (83), 8 states have call predecessors, (83), 12 states have return successors, (83), 8 states have call predecessors, (83), 8 states have call successors, (83) [2023-12-19 06:45:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 12667 transitions. [2023-12-19 06:45:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 06:45:48,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:45:48,172 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:45:48,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 06:45:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 06:45:48,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:45:48,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:45:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash 879976256, now seen corresponding path program 1 times [2023-12-19 06:45:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:45:48,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390131879] [2023-12-19 06:45:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:45:48,432 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:45:48,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216716691] [2023-12-19 06:45:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:48,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:45:48,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:45:48,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:45:48,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 06:45:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:45:48,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 06:45:48,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:45:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:45:49,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:45:49,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:45:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390131879] [2023-12-19 06:45:49,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:45:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216716691] [2023-12-19 06:45:49,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216716691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:45:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:45:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:45:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22531178] [2023-12-19 06:45:49,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:45:49,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 06:45:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:45:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 06:45:49,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:45:49,147 INFO L87 Difference]: Start difference. First operand 8467 states and 12667 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:45:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:45:50,623 INFO L93 Difference]: Finished difference Result 22638 states and 33900 transitions. [2023-12-19 06:45:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 06:45:50,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 523 [2023-12-19 06:45:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:45:50,654 INFO L225 Difference]: With dead ends: 22638 [2023-12-19 06:45:50,655 INFO L226 Difference]: Without dead ends: 14577 [2023-12-19 06:45:50,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 06:45:50,672 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 129 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 06:45:50,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 817 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:45:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14577 states. [2023-12-19 06:45:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14577 to 14575. [2023-12-19 06:45:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14575 states, 10781 states have (on average 1.4111863463500602) internal successors, (15214), 10853 states have internal predecessors, (15214), 3317 states have call successors, (3317), 476 states have call predecessors, (3317), 476 states have return successors, (3317), 3245 states have call predecessors, (3317), 3317 states have call successors, (3317) [2023-12-19 06:45:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14575 states to 14575 states and 21848 transitions. [2023-12-19 06:45:52,588 INFO L78 Accepts]: Start accepts. Automaton has 14575 states and 21848 transitions. Word has length 523 [2023-12-19 06:45:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:45:52,589 INFO L495 AbstractCegarLoop]: Abstraction has 14575 states and 21848 transitions. [2023-12-19 06:45:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:45:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 14575 states and 21848 transitions. [2023-12-19 06:45:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 06:45:52,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:45:52,595 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:45:52,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:45:52,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 06:45:52,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:45:52,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:45:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1899475716, now seen corresponding path program 1 times [2023-12-19 06:45:52,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:45:52,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505491747] [2023-12-19 06:45:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:45:52,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:45:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140068645] [2023-12-19 06:45:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:45:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:45:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:45:52,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:45:52,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 06:45:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:45:53,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:45:53,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:45:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 8904 proven. 108 refuted. 0 times theorem prover too weak. 4600 trivial. 0 not checked. [2023-12-19 06:45:53,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:45:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 138 proven. 108 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:45:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:45:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505491747] [2023-12-19 06:45:54,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:45:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140068645] [2023-12-19 06:45:54,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140068645] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:45:54,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:45:54,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 06:45:54,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289995059] [2023-12-19 06:45:54,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:45:54,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 06:45:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:45:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 06:45:54,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-19 06:45:54,340 INFO L87 Difference]: Start difference. First operand 14575 states and 21848 transitions. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:46:03,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:46:03,554 INFO L93 Difference]: Finished difference Result 79142 states and 117385 transitions. [2023-12-19 06:46:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-19 06:46:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) Word has length 523 [2023-12-19 06:46:03,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:46:03,729 INFO L225 Difference]: With dead ends: 79142 [2023-12-19 06:46:03,729 INFO L226 Difference]: Without dead ends: 64770 [2023-12-19 06:46:03,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1038 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2023-12-19 06:46:03,774 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2179 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:46:03,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 1772 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 06:46:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64770 states. [2023-12-19 06:46:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64770 to 50606. [2023-12-19 06:46:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50606 states, 39637 states have (on average 1.4212225950500794) internal successors, (56333), 40025 states have internal predecessors, (56333), 9505 states have call successors, (9505), 1463 states have call predecessors, (9505), 1463 states have return successors, (9505), 9117 states have call predecessors, (9505), 9505 states have call successors, (9505) [2023-12-19 06:46:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50606 states to 50606 states and 75343 transitions. [2023-12-19 06:46:10,534 INFO L78 Accepts]: Start accepts. Automaton has 50606 states and 75343 transitions. Word has length 523 [2023-12-19 06:46:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:46:10,535 INFO L495 AbstractCegarLoop]: Abstraction has 50606 states and 75343 transitions. [2023-12-19 06:46:10,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 4 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 4 states have call predecessors, (140), 4 states have call successors, (140) [2023-12-19 06:46:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 50606 states and 75343 transitions. [2023-12-19 06:46:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 06:46:10,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:46:10,552 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:46:10,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 06:46:10,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:46:10,760 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:46:10,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:46:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1876843462, now seen corresponding path program 1 times [2023-12-19 06:46:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:46:10,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246439050] [2023-12-19 06:46:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:46:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:46:10,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:46:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26875907] [2023-12-19 06:46:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:46:10,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:46:10,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:46:10,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:46:10,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 06:46:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:46:11,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 06:46:11,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:46:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 7263 proven. 288 refuted. 0 times theorem prover too weak. 6061 trivial. 0 not checked. [2023-12-19 06:46:12,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:46:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 288 proven. 201 refuted. 0 times theorem prover too weak. 13123 trivial. 0 not checked. [2023-12-19 06:46:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:46:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246439050] [2023-12-19 06:46:12,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:46:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26875907] [2023-12-19 06:46:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26875907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:46:12,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:46:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2023-12-19 06:46:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362217568] [2023-12-19 06:46:12,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:46:12,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 06:46:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:46:12,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 06:46:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-12-19 06:46:12,695 INFO L87 Difference]: Start difference. First operand 50606 states and 75343 transitions. Second operand has 21 states, 20 states have (on average 8.15) internal successors, (163), 19 states have internal predecessors, (163), 6 states have call successors, (119), 4 states have call predecessors, (119), 8 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) [2023-12-19 06:46:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:46:21,867 INFO L93 Difference]: Finished difference Result 112156 states and 166065 transitions. [2023-12-19 06:46:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 06:46:21,867 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.15) internal successors, (163), 19 states have internal predecessors, (163), 6 states have call successors, (119), 4 states have call predecessors, (119), 8 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) Word has length 523 [2023-12-19 06:46:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:46:22,043 INFO L225 Difference]: With dead ends: 112156 [2023-12-19 06:46:22,043 INFO L226 Difference]: Without dead ends: 63192 [2023-12-19 06:46:22,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1027 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=510, Invalid=1130, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 06:46:22,110 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 848 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:46:22,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 2095 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 06:46:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63192 states. [2023-12-19 06:46:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63192 to 36917. [2023-12-19 06:46:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36917 states, 29433 states have (on average 1.4342744538443244) internal successors, (42215), 29717 states have internal predecessors, (42215), 6469 states have call successors, (6469), 1014 states have call predecessors, (6469), 1014 states have return successors, (6469), 6185 states have call predecessors, (6469), 6469 states have call successors, (6469) [2023-12-19 06:46:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36917 states to 36917 states and 55153 transitions. [2023-12-19 06:46:26,857 INFO L78 Accepts]: Start accepts. Automaton has 36917 states and 55153 transitions. Word has length 523 [2023-12-19 06:46:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:46:26,857 INFO L495 AbstractCegarLoop]: Abstraction has 36917 states and 55153 transitions. [2023-12-19 06:46:26,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.15) internal successors, (163), 19 states have internal predecessors, (163), 6 states have call successors, (119), 4 states have call predecessors, (119), 8 states have return successors, (120), 6 states have call predecessors, (120), 6 states have call successors, (120) [2023-12-19 06:46:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36917 states and 55153 transitions. [2023-12-19 06:46:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 06:46:26,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:46:26,869 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:46:26,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 06:46:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 06:46:27,077 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:46:27,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:46:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash -11998090, now seen corresponding path program 1 times [2023-12-19 06:46:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:46:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474028551] [2023-12-19 06:46:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:46:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:46:27,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:46:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137845439] [2023-12-19 06:46:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:46:27,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:46:27,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:46:27,125 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:46:27,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 06:46:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:46:27,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-19 06:46:27,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:46:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9748 proven. 924 refuted. 0 times theorem prover too weak. 2940 trivial. 0 not checked. [2023-12-19 06:46:35,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:46:38,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 555 proven. 411 refuted. 0 times theorem prover too weak. 12646 trivial. 0 not checked. [2023-12-19 06:46:38,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:46:38,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474028551] [2023-12-19 06:46:38,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:46:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137845439] [2023-12-19 06:46:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137845439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:46:38,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:46:38,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20] total 52 [2023-12-19 06:46:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368506647] [2023-12-19 06:46:38,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:46:38,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-19 06:46:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:46:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-19 06:46:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=1947, Unknown=0, NotChecked=0, Total=2652 [2023-12-19 06:46:38,548 INFO L87 Difference]: Start difference. First operand 36917 states and 55153 transitions. Second operand has 52 states, 51 states have (on average 5.078431372549019) internal successors, (259), 49 states have internal predecessors, (259), 16 states have call successors, (166), 12 states have call predecessors, (166), 19 states have return successors, (166), 15 states have call predecessors, (166), 16 states have call successors, (166) [2023-12-19 06:47:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:47:02,715 INFO L93 Difference]: Finished difference Result 190783 states and 284612 transitions. [2023-12-19 06:47:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-12-19 06:47:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.078431372549019) internal successors, (259), 49 states have internal predecessors, (259), 16 states have call successors, (166), 12 states have call predecessors, (166), 19 states have return successors, (166), 15 states have call predecessors, (166), 16 states have call successors, (166) Word has length 524 [2023-12-19 06:47:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:47:03,322 INFO L225 Difference]: With dead ends: 190783 [2023-12-19 06:47:03,323 INFO L226 Difference]: Without dead ends: 154838 [2023-12-19 06:47:03,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11022 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6457, Invalid=19949, Unknown=0, NotChecked=0, Total=26406 [2023-12-19 06:47:03,425 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 7080 mSDsluCounter, 6918 mSDsCounter, 0 mSdLazyCounter, 7361 mSolverCounterSat, 1555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7085 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 8916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 7361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:47:03,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7085 Valid, 7322 Invalid, 8916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1555 Valid, 7361 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 06:47:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154838 states. [2023-12-19 06:47:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154838 to 23172. [2023-12-19 06:47:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23172 states, 18997 states have (on average 1.4831289150918565) internal successors, (28175), 19121 states have internal predecessors, (28175), 3531 states have call successors, (3531), 643 states have call predecessors, (3531), 643 states have return successors, (3531), 3407 states have call predecessors, (3531), 3531 states have call successors, (3531) [2023-12-19 06:47:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23172 states to 23172 states and 35237 transitions. [2023-12-19 06:47:08,564 INFO L78 Accepts]: Start accepts. Automaton has 23172 states and 35237 transitions. Word has length 524 [2023-12-19 06:47:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:47:08,565 INFO L495 AbstractCegarLoop]: Abstraction has 23172 states and 35237 transitions. [2023-12-19 06:47:08,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.078431372549019) internal successors, (259), 49 states have internal predecessors, (259), 16 states have call successors, (166), 12 states have call predecessors, (166), 19 states have return successors, (166), 15 states have call predecessors, (166), 16 states have call successors, (166) [2023-12-19 06:47:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23172 states and 35237 transitions. [2023-12-19 06:47:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 06:47:08,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:47:08,573 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:47:08,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 06:47:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 06:47:08,781 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:47:08,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:47:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 327986292, now seen corresponding path program 1 times [2023-12-19 06:47:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:47:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023471032] [2023-12-19 06:47:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:47:08,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:47:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279111589] [2023-12-19 06:47:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:08,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:47:08,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:47:08,815 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:47:08,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 06:47:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:47:09,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 06:47:09,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:47:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9822 proven. 822 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2023-12-19 06:47:14,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:47:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:47:14,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:47:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023471032] [2023-12-19 06:47:14,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:47:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279111589] [2023-12-19 06:47:14,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279111589] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:47:14,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:47:14,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [28] total 33 [2023-12-19 06:47:14,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055113624] [2023-12-19 06:47:14,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:47:14,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:47:14,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:47:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:47:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 06:47:14,681 INFO L87 Difference]: Start difference. First operand 23172 states and 35237 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:47:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:47:29,936 INFO L93 Difference]: Finished difference Result 88964 states and 133076 transitions. [2023-12-19 06:47:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:47:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 524 [2023-12-19 06:47:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:47:30,097 INFO L225 Difference]: With dead ends: 88964 [2023-12-19 06:47:30,097 INFO L226 Difference]: Without dead ends: 76367 [2023-12-19 06:47:30,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=926, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:47:30,139 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1114 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:47:30,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1331 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 06:47:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76367 states. [2023-12-19 06:47:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76367 to 21245. [2023-12-19 06:47:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21245 states, 17380 states have (on average 1.4833716915995396) internal successors, (25781), 17484 states have internal predecessors, (25781), 3251 states have call successors, (3251), 613 states have call predecessors, (3251), 613 states have return successors, (3251), 3147 states have call predecessors, (3251), 3251 states have call successors, (3251) [2023-12-19 06:47:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21245 states to 21245 states and 32283 transitions. [2023-12-19 06:47:34,700 INFO L78 Accepts]: Start accepts. Automaton has 21245 states and 32283 transitions. Word has length 524 [2023-12-19 06:47:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:47:34,700 INFO L495 AbstractCegarLoop]: Abstraction has 21245 states and 32283 transitions. [2023-12-19 06:47:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:47:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 21245 states and 32283 transitions. [2023-12-19 06:47:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 06:47:34,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:47:34,708 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:47:34,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 06:47:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 06:47:34,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:47:34,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:47:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -327708686, now seen corresponding path program 1 times [2023-12-19 06:47:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:47:34,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913368308] [2023-12-19 06:47:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:47:34,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:47:34,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176614028] [2023-12-19 06:47:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:34,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:47:34,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:47:34,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:47:34,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 06:47:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:47:35,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-19 06:47:35,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:47:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9821 proven. 891 refuted. 0 times theorem prover too weak. 2900 trivial. 0 not checked. [2023-12-19 06:47:42,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:47:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:47:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:47:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913368308] [2023-12-19 06:47:43,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:47:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176614028] [2023-12-19 06:47:43,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176614028] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:47:43,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:47:43,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [34] total 39 [2023-12-19 06:47:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785099851] [2023-12-19 06:47:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:47:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 06:47:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:47:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 06:47:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 06:47:43,406 INFO L87 Difference]: Start difference. First operand 21245 states and 32283 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:47:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:47:48,447 INFO L93 Difference]: Finished difference Result 54758 states and 83565 transitions. [2023-12-19 06:47:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 06:47:48,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 524 [2023-12-19 06:47:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:47:48,503 INFO L225 Difference]: With dead ends: 54758 [2023-12-19 06:47:48,503 INFO L226 Difference]: Without dead ends: 42359 [2023-12-19 06:47:48,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=360, Invalid=1280, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 06:47:48,516 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 619 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:47:48,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1269 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:47:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42359 states. [2023-12-19 06:47:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42359 to 21269. [2023-12-19 06:47:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21269 states, 17404 states have (on average 1.4834520799816133) internal successors, (25818), 17508 states have internal predecessors, (25818), 3251 states have call successors, (3251), 613 states have call predecessors, (3251), 613 states have return successors, (3251), 3147 states have call predecessors, (3251), 3251 states have call successors, (3251) [2023-12-19 06:47:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21269 states to 21269 states and 32320 transitions. [2023-12-19 06:47:52,407 INFO L78 Accepts]: Start accepts. Automaton has 21269 states and 32320 transitions. Word has length 524 [2023-12-19 06:47:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:47:52,424 INFO L495 AbstractCegarLoop]: Abstraction has 21269 states and 32320 transitions. [2023-12-19 06:47:52,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:47:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21269 states and 32320 transitions. [2023-12-19 06:47:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2023-12-19 06:47:52,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:47:52,444 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:47:52,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-19 06:47:52,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 06:47:52,653 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:47:52,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:47:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1915997006, now seen corresponding path program 1 times [2023-12-19 06:47:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:47:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676819101] [2023-12-19 06:47:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:47:52,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:47:52,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589616171] [2023-12-19 06:47:52,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:47:52,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:47:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:47:52,686 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:47:52,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 06:47:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:47:53,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1170 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-19 06:47:53,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:47:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9742 proven. 666 refuted. 0 times theorem prover too weak. 3204 trivial. 0 not checked. [2023-12-19 06:47:57,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:47:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13612 trivial. 0 not checked. [2023-12-19 06:47:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:47:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676819101] [2023-12-19 06:47:57,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:47:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589616171] [2023-12-19 06:47:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589616171] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:47:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:47:57,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [28] total 31 [2023-12-19 06:47:57,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090247506] [2023-12-19 06:47:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:47:57,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:47:57,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:47:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:47:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:47:57,321 INFO L87 Difference]: Start difference. First operand 21269 states and 32320 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:48:07,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:48:07,348 INFO L93 Difference]: Finished difference Result 57693 states and 86587 transitions. [2023-12-19 06:48:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 06:48:07,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) Word has length 524 [2023-12-19 06:48:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:48:07,444 INFO L225 Difference]: With dead ends: 57693 [2023-12-19 06:48:07,444 INFO L226 Difference]: Without dead ends: 45114 [2023-12-19 06:48:07,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2023-12-19 06:48:07,492 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 718 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:48:07,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1163 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:48:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45114 states. [2023-12-19 06:48:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45114 to 23046. [2023-12-19 06:48:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23046 states, 18813 states have (on average 1.4677616541753042) internal successors, (27613), 18933 states have internal predecessors, (27613), 3563 states have call successors, (3563), 669 states have call predecessors, (3563), 669 states have return successors, (3563), 3443 states have call predecessors, (3563), 3563 states have call successors, (3563) [2023-12-19 06:48:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23046 states to 23046 states and 34739 transitions. [2023-12-19 06:48:13,593 INFO L78 Accepts]: Start accepts. Automaton has 23046 states and 34739 transitions. Word has length 524 [2023-12-19 06:48:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:48:13,594 INFO L495 AbstractCegarLoop]: Abstraction has 23046 states and 34739 transitions. [2023-12-19 06:48:13,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 1 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 1 states have call predecessors, (83), 1 states have call successors, (83) [2023-12-19 06:48:13,594 INFO L276 IsEmpty]: Start isEmpty. Operand 23046 states and 34739 transitions. [2023-12-19 06:48:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 06:48:13,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:48:13,601 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:48:13,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-19 06:48:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:48:13,810 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:48:13,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:48:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2130995843, now seen corresponding path program 1 times [2023-12-19 06:48:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:48:13,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445174754] [2023-12-19 06:48:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:48:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:48:13,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:48:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829691308] [2023-12-19 06:48:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:48:13,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:48:13,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:48:13,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:48:13,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 06:48:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:48:14,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 06:48:14,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:48:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 9146 proven. 75 refuted. 0 times theorem prover too weak. 4391 trivial. 0 not checked. [2023-12-19 06:48:14,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:48:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 171 proven. 75 refuted. 0 times theorem prover too weak. 13366 trivial. 0 not checked. [2023-12-19 06:48:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:48:15,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445174754] [2023-12-19 06:48:15,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:48:15,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829691308] [2023-12-19 06:48:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829691308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:48:15,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:48:15,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-19 06:48:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316204097] [2023-12-19 06:48:15,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:48:15,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:48:15,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:48:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:48:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:48:15,250 INFO L87 Difference]: Start difference. First operand 23046 states and 34739 transitions. Second operand has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2023-12-19 06:48:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:48:28,584 INFO L93 Difference]: Finished difference Result 74334 states and 110766 transitions. [2023-12-19 06:48:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 06:48:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) Word has length 525 [2023-12-19 06:48:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:48:28,686 INFO L225 Difference]: With dead ends: 74334 [2023-12-19 06:48:28,686 INFO L226 Difference]: Without dead ends: 52888 [2023-12-19 06:48:28,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1038 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=535, Unknown=0, NotChecked=0, Total=812 [2023-12-19 06:48:28,725 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1080 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:48:28,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1712 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:48:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52888 states. [2023-12-19 06:48:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52888 to 23552. [2023-12-19 06:48:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23552 states, 19298 states have (on average 1.4717587314747642) internal successors, (28402), 19418 states have internal predecessors, (28402), 3563 states have call successors, (3563), 690 states have call predecessors, (3563), 690 states have return successors, (3563), 3443 states have call predecessors, (3563), 3563 states have call successors, (3563) [2023-12-19 06:48:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23552 states to 23552 states and 35528 transitions. [2023-12-19 06:48:34,598 INFO L78 Accepts]: Start accepts. Automaton has 23552 states and 35528 transitions. Word has length 525 [2023-12-19 06:48:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:48:34,624 INFO L495 AbstractCegarLoop]: Abstraction has 23552 states and 35528 transitions. [2023-12-19 06:48:34,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.5) internal successors, (189), 14 states have internal predecessors, (189), 5 states have call successors, (140), 3 states have call predecessors, (140), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2023-12-19 06:48:34,625 INFO L276 IsEmpty]: Start isEmpty. Operand 23552 states and 35528 transitions. [2023-12-19 06:48:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2023-12-19 06:48:34,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:48:34,632 INFO L195 NwaCegarLoop]: trace histogram [83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:48:34,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-19 06:48:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:48:34,833 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:48:34,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:48:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2141339199, now seen corresponding path program 1 times [2023-12-19 06:48:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:48:34,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568404282] [2023-12-19 06:48:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:48:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:48:34,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:48:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780785822] [2023-12-19 06:48:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:48:34,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:48:34,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:48:34,865 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:48:34,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 06:48:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:48:35,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1177 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 06:48:35,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:48:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 8069 proven. 687 refuted. 0 times theorem prover too weak. 4856 trivial. 0 not checked. [2023-12-19 06:48:39,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:49:30,105 WARN L293 SmtUtils]: Spent 28.70s on a formula simplification. DAG size of input: 172 DAG size of output: 99 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:50:54,783 WARN L293 SmtUtils]: Spent 15.50s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:52:07,399 WARN L293 SmtUtils]: Spent 10.52s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 06:52:28,520 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:53:06,441 WARN L293 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:55:15,811 WARN L293 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 11 DAG size of output: 1 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 06:55:40,437 WARN L293 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-19 06:58:46,288 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 06:58:46,292 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 [2023-12-19 06:58:46,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-19 06:58:46,305 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 06:58:46,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:58:46,489 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 526 with TraceHistMax 83,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-2-1 context. [2023-12-19 06:58:46,492 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 06:58:46,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 06:58:46,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:58:46 BoogieIcfgContainer [2023-12-19 06:58:46,496 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 06:58:46,496 INFO L158 Benchmark]: Toolchain (without parser) took 847148.22ms. Allocated memory was 299.9MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 245.5MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-19 06:58:46,496 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 244.3MB. Free memory is still 192.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:58:46,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.58ms. Allocated memory is still 299.9MB. Free memory was 245.4MB in the beginning and 220.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 06:58:46,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.58ms. Allocated memory is still 299.9MB. Free memory was 220.2MB in the beginning and 211.4MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 06:58:46,497 INFO L158 Benchmark]: Boogie Preprocessor took 96.20ms. Allocated memory is still 299.9MB. Free memory was 211.4MB in the beginning and 200.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 06:58:46,497 INFO L158 Benchmark]: RCFGBuilder took 846.30ms. Allocated memory is still 299.9MB. Free memory was 200.5MB in the beginning and 219.0MB in the end (delta: -18.5MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. [2023-12-19 06:58:46,497 INFO L158 Benchmark]: TraceAbstraction took 845776.81ms. Allocated memory was 299.9MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 218.5MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-19 06:58:46,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 244.3MB. Free memory is still 192.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 343.58ms. Allocated memory is still 299.9MB. Free memory was 245.4MB in the beginning and 220.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.58ms. Allocated memory is still 299.9MB. Free memory was 220.2MB in the beginning and 211.4MB in the end (delta: 8.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 96.20ms. Allocated memory is still 299.9MB. Free memory was 211.4MB in the beginning and 200.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * RCFGBuilder took 846.30ms. Allocated memory is still 299.9MB. Free memory was 200.5MB in the beginning and 219.0MB in the end (delta: -18.5MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. * TraceAbstraction took 845776.81ms. Allocated memory was 299.9MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 218.5MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. 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 526 with TraceHistMax 83,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-6-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 845.7s, OverallIterations: 21, TraceHistogramMax: 83, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 112.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24015 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23612 mSDsluCounter, 35326 SdHoareTripleChecker+Invalid, 19.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27444 mSDsCounter, 7829 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25717 IncrementalHoareTripleChecker+Invalid, 33546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7829 mSolverCounterUnsat, 7882 mSDtfsCounter, 25717 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16768 GetRequests, 16027 SyntacticMatches, 3 SemanticMatches, 738 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35201 ImplicationChecksByTransitivity, 27.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50606occurred in iteration=14, InterpolantAutomatonStates: 569, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 42.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 315673 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 67.2s InterpolantComputationTime, 10975 NumberOfCodeBlocks, 10975 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 16179 ConstructedInterpolants, 0 QuantifiedInterpolants, 126829 SizeOfPredicates, 166 NumberOfNonLiveVariables, 23453 ConjunctsInSsa, 389 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 415405/421972 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown